Re: [beagleboard] BBB No video over HDMI

[Gerald Coley]

Maximum resolution is 1280x1024. It could be that your Sharp 1080 display, can't handle anything the board throws at it. It reads the EDID to pick the resolution. Try hitting reset and see if the SW can get the EDID information from the TV and find a compatible resolution for your TV.

Gerald

On Sun, May 5, 2013 at 8:12 AM, Chuck Wuthrich <chuck.w...@gmail.com> wrote:

Hi - I have set up the BBB on Windows and it appears to be running correctly. I can browse the files and open up the browser to interact. I'm not getting any video when I plug it into my HDTV though. I have it hooked up using a 5v power supply, a micro HDMI cable, and a USB hub with keyboard and mouse. The USR LEDs are blinking like something is going on but I get no video. The TV is a Sharp 1080p LCD TV.

What am I doing wrong?

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Gerald

 

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g-co...@ti.com

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http://circuitco.com/support/

[Chuck Wuthrich]

Thanks for the response! This is interesting. Is the max 1280x1024 resolution a hardware limitation or a limitation of this brand of Linux (Angstrom)? Also, I have heard that audio is not working over HDMI on BBB yet. Is this true?

Chuck W. 

[Gerald Coley]

1280x1024 is a limit of the 125MHZ clock the AM3359 can generate. It is not a Linux/Angstrom limitation. It is described in the System Reference Manual

http://circuitco.com/support/index.php?title=BeagleBoneBlack

Audio does indeed work fine on the board. Lack of audio support in the current image is clearly communicated here. 

http://circuitco.com/support/index.php?title=Updating_The_Software

If all goes to plan, sometime early this week the updated image will be made available with audio support and we will be moving to that at the same time as the production image that ships with future board shipments. As expected, audio support will be limited to CEA resolutions as the specifications define. Monitors support audio only at the CEA resolutions which are HDMI. The other supported resolutions are basically DVI-D which does not support audio.

Gerald

[Chuck Wuthrich]

Ok - thanks for the information. I'm still working on the video over HDMI on this TV. The TV still didn't recognize the BBB over HDMI after a reset. I'll look up this TV and find out which resolutions it supports and then edit the xserver config file to match. Either that or try Ubuntu. I'll keep trying things until it works. I'll post what I find.

Chuck W.

[Gerald Coley]

1280x720 should work. You could try the candidate release that is coming out and give it a shot. It has the audio and should default to 1280x720.

   http://dominion.thruhere.net/koen/angstrom/beaglebone/BBB-eMMC-flasher-2013.05.03.img.xz

Gerald

[Chuck Wuthrich]

Great! Thanks for the link. I'm downloading the new image now and will post results after testing it out.

Chuck W.

[Chuck Wuthrich]

Still no luck. I installed the new image to the BBB onboard memory and that works well. I am able to edit the xorg.conf file with settings for my TV (1280x1024_60) and restart but nothing changes. I'm not sure where to go from here. Any suggestions would be appreciated.

Sharp Aquos TV Manual

Here's my xorg.config:

root@beaglebone:~# nano /etc/X11/xorg.conf

  GNU nano 2.2.5           File: /etc/X11/xorg.conf

Section "Module"

        Load    "extmod"

        Load    "dbe"

        Load    "glx"

        Load    "freetype"

        Load    "type1"

        Load    "record"

        Load    "dri"

EndSection

Section "Monitor"                                                               $

        Identifier      "Builtin Default Monitor"

        HorizSync       31.5-75

        VertRefresh     60

EndSection

Section "Device"

        Identifier      "Builtin Default fbdev Device 0"

        Driver  "fbdev"

EndSection

Section "Screen"

        Identifier      "Builtin Default fbdev Screen 0"

        Device  "Builtin Default fbdev Device 0"

        Monitor "Builtin Default Monitor"

        DefaultDepth    24

        SubSection "Display"

                Depth   24

                Modes "1280x1024_60.00"

        EndSubSection

EndSection

Section "ServerLayout"

        Identifier      "Builtin Default Layout"                                

        Screen  "Builtin Default fbdev Screen 0"

EndSection

[Chuck Wuthrich]

After more investigation I found out about the uEnv.txt file on the BBB. My understanding is this file sets boot arguments, including video resolution.

I added these settings and crossed my fingers:

optargs=quiet

dvimode=1280x1024MR-16@60

defaultdisplay=tv

vram=12MB

It's still not showing video over HDMI though.  :(

Chuck W.

[Robert Nelson]

On Sun, May 5, 2013 at 4:22 PM, Chuck Wuthrich <chuck.w...@gmail.com> wrote:
> After more investigation I found out about the uEnv.txt file on the BBB. My
> understanding is this file sets boot arguments, including video resolution.
>
> I added these settings and crossed my fingers:
>
> optargs=quiet
> dvimode=1280x1024MR-16@60
> defaultdisplay=tv
> vram=12MB
>
> It's still not showing video over HDMI though. :(

Except, dvimode/defaultdisplay/vram all relate to the old "omapfb"
dss2 driver found on the BeagleBoard/PandaBoard.. The BeagleBone
Black has a Davanci based video display (which has different boot
variables) and also in v3.8.x has been converted to KMS which has a
completely different set too.. Which i don't have a reference for at
this time..

Basically, it relies completely on being able to read the monitor's edid..

Regards,

--
Robert Nelson
http://www.rcn-ee.com/

[Chuck Wuthrich]

That's good to know. I am going to try updating the firmware on my TV. Perhaps then the BBB will detect the EDID. If that doesn't work then I'm out of ideas and will probably return the board to the vendor. Oh well.

[Gerald Coley]

Where did you buy the board?

Gerald

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[Chuck Wuthrich]

I bought it from adaFruit.

[Gerald Coley]

Thanks!

Do you have another monitor or TV you can try it on?

Before you return it, do RMA request.

http://beagleboard.org/support/rma

Gerald

[Chuck Wuthrich]

No - this is the only TV/computer monitor in the house. I'm keeping my fingers crossed on the firmware update. If that doesn't work I'll use the link provided for an RMA request. Thank you for your assistance with this issue.

Chuck W.

[Gerald Coley]

I read the through manual. Not much information in it. Some displays have an over scan option that can mess things up. I didn't see anything in the manual about it. It has a PC interface, so I suspect that the display expects that to be used for a PC,  not a HDMI port. I din't see any resolutions other than 1080. I searched on 1280x720, but didn't get any hits. Sounds like this display is a single resolution display under HDMI, which is odd.

I would go ahead and try all of the ports to see if one of them may work for you.

Gerald

[Chuck Wuthrich]

On page 15 there is a chart of supported resolutions for HDMI. This one is listed: 1280x1024 HFreq: 64kHz VFreq: 60Hz. 

Chuck W.

[Gerald Coley]

You are correct. I read that as the PC port and missed the HDMI above it. Try a couple of other ports. If it doesn't work, go ahead and submit the RMA.

Gerald

[Chuck Wuthrich]

Still couldn't get it work, so I'll RMA the board. The raspberry Pi has no problems on this TV...

Darn, I was excited about this board. 

Chuck W.

[Gerald Coley]

Just do the RMA. You will be taken care of.

Gerald

[Chuck Wuthrich]

RMA sent. Thanks again. 

[Gerald Coley]

RMA received. You will be contacted tomorrow.

Gerald

[Gerald Coley]

What Display/TV are you using? 

Gerald

On Mon, May 6, 2013 at 3:08 PM, <armstro...@gmail.com> wrote:

I had mine working on hdmi when it was first received but after the update 5.03 download it stopped showing anything. I can see xorg running 

On Sunday, May 5, 2013 5:25:27 PM UTC-4, RobertCNelson wrote:

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[Gerald Coley]

I have a display that shows HDMI is connected, but no picture. After I boot the board and get to that point, if I power cycle the display, the image them shows up.

Gerald

On Tue, May 7, 2013 at 3:16 PM, <crgf...@gmail.com> wrote:

My BBB Tethers fine to my Mac Pro via USB; unfortunately when I try standalone: no HDMI output as others on this thread found.  I am following the Quick Start instructions that came with the BBB (from Newark Electronics).  Attempting to use a 2008 Panasonic TH-50PX6U hi-def plasma TV, which works with my Raspberry Pi model B rev2 (with a known good RadioShack microHDMI-HDMI adapter).  Screen blinks "AUX HDMI" like it knows there is a connection but remains black otherwise.  Running the preloaded Angstrom with no SD card; USB host port has an Apple aluminum wired USB keyboard & a Logitech wired mouse (into the keyboard's USB port), with 5V from a known good 1.5A Enercell adapter.  Would appreciate any fix, thanks in advance.

Craig

[Gerald Coley]

Here is a list of those we know work.

http://circuitco.com/support/index.php?title=BeagleBone_Black_Accessories#Televisions

This new one is a cheap Proscan PLED1960A. The new image defaults to 1280x720. 

Gerald

On Tue, May 7, 2013 at 3:36 PM, <crgf...@gmail.com> wrote:

Thanks Gerald -- I tried that just now -- no luck for me, unfortunately.  What display model are you using?

Craig

[Jason Kridner]

On Sunday, May 5, 2013 9:12:27 AM UTC-4, Chuck Wuthrich wrote:

Hi - I have set up the BBB on Windows and it appears to be running correctly. I can browse the files and open up the browser to interact. I'm not getting any video when I plug it into my HDTV though. I have it hooked up using a 5v power supply, a micro HDMI cable, and a USB hub with keyboard and mouse. The USR LEDs are blinking like something is going on but I get no video. The TV is a Sharp 1080p LCD TV.

What am I doing wrong?

Please add the following line to your uEnv.txt file (seen on the flash drive when you plug your board in):

optargs=drm.debug=7

Then, ssh into the board and perform 'dmesg > file.txt' and provide a copy of that file.  If this is too complicated, I can look at providing an additional debug image for problematic monitors.

[Chuck Wuthrich]

This is good information; I wish I had it yesterday. I was told to RMA the board so I don't have it anymore. I don't know what will happen now, whether my BBB will be tested and returned or I'll get another in exchange. It's strange there are so many having issues with a standard interface like HDMI though. 

[Gerald Coley]

The driver had to be rewritten basically from scratch for DRM. It is still a work in progress and some of the timings are not yet ideal. We want to make sure it is not an HW issue, hence the RMA.

Ideally if there was a way to tweak the timings with an addition to the uENV.txt file, that would be ideal.

Did you hear back from the RMA team before you sent the board in?

Gerald

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[Chuck Wuthrich]

The only information I got from the RMA team was a shipping label. No information about what will happen next. I requested that they keep me posted.

Chuck W.

[Gerald Coley]

They will receive it and let you know when it arrives. Then they will test it and report back to me what they found. Then depending on what they find, they will either repair and send it back to you or just send you a new one.

Gerald

[Chuck Wuthrich]

Ok - thanks for the update. Also thank you for helping me troubleshoot this problem. 

[Gerald Coley]

Well, we may need you again. If the boards tests fine, then we have some SW settings to look at. EDID should give us what we need. EDID may not be reading correctly, but the messages Jason mentioned would tell us that.

Gerald

[Chuck Wuthrich]

No problem. I'll do what I can to help.

Chuck W.

[Gerald Coley]

One other thing, for others who may read this, the boards comes up with the display off. It wakes up sleeping. If you can connect a mouse or keyboard, and wiggle/hit a key, that should wake it up. You may have to power cycle the display, because it is now asleep, but you should get something. We are working to make sure the board wakes up awake and does not wake up asleep.

Gerald

[Gerald Coley]

I am hoping other people will speak up and say what they have that works. So far, nothing has come in. If I hear, I will add them to the list.

We are still looking and the SW and we think there may be something out of whack and an investigation is ongoing.

Gerald

On Tue, May 7, 2013 at 9:45 PM, <crgf...@gmail.com> wrote:

Thanks Gerald.  Of the monitors in the circuitco list, only the Samsung UN32EH500F seems to be currently available from a quick scan of amazon and newegg.

Best,

Craig

[Gerald Coley]

That command was not intended to make HDMI work. Read the rest of his message. You were supposed to copy something to a file.

Gerald

On Tue, May 7, 2013 at 10:09 PM, <crgf...@gmail.com> wrote:

Jason, I tried that and uEnv.txt now reads: 

"optargs=quiet

optargs=drm.debug=7"

Still, no HDMI video out.

--Craig

On Tuesday, May 7, 2013 4:54:14 PM UTC-4, Jason Kridner wrote:

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[Jason Stapels]

Running that command should have created a new file called file.txt. I'm guessing Jason would then like you to transfer it off. The easiest way is to use the scp command (Linux/Mac) or WinSCP (Windows). SCP works very similar to SSH but it used for copying files. If you're more familiar with FTP, then the SFTP might be a better approach (it's an FTP interface for SCP).

On Tuesday, May 7, 2013 11:23:49 PM UTC-4, crgf...@gmail.com wrote:

Sorry I'm kind of new to this.  When I SSH'd in, I typed 'dmesg > file.txt' into the terminal and nothing happened; then I tried 'dmesg > uEnv.txt' -- still nothing happened -- perhaps I am not performing that step properly and I apologize for asking naive questions, but would like to try and get it working if possible.  Thanks.

--Craig

[Gerald Coley]

Try the latest image.

http://circuitco.com/support/index.php?title=Updating_The_Software

Gerald

On Fri, May 10, 2013 at 12:16 PM, <s.to...@gmx.net> wrote:

Hey,

i have a problem too with my BBB regarding the HDMI.

I bought 2 BBB's and got them a week ago now. I worked first with only one since i didnt bought both for me, one was for my father but he didnt started to work with it so i have now 2 BBBs to test stuff.

Ok, now to the problem.

I started with my BBB like shown in a Video from Mouser where i bought both BBBs and connected the BBB via the USB cabel to my laptop and installed the needed SW(Drivers) for the communication through the USB. After that i followed the instructions in the "Getting Started" Page and followed the link to the BBB 192.168.7.2 and looked what i have to do know. So, first... update your SW to the latest version. Good, fine with that and following the link and instructions to download the 2013.03.14 distribution from angstrom and to put it onto an microSD card to flash the eMMC. Worked all fine since iam a bit familiar with that from the RPi. Ahh... i did that all with an dc power device, so not with the usb cabel... but yet i didnt connected the HDMI cabel or any Keyboard or Mouse since i thought it wasnt needed while i only had to wait the 45min till all LEDs show solid, what i did.

So it all worked and i had the 2013.03.14 angstrom dist on my BBB, reconnected it to my laptop via USB and tried all the Stuff like SSH through GateOne which work really good and the Cloud9 IDE which is cool too.

After that i was like its time to start the BBB alone and connected a HDMI to my "LG flatron W2261V", a "Logitech Keyboard K360" and a "Logitech Wireless Mouse M350" with a Unifiying reciever onto to my BBB and the DC 5V Power. Switched my Monitor to HDMI and started the BBB, but nothing on Screen happens... only telling me i should check the connection. Hm, ok was a bit disappointed.

So now i check that Google Page here and found some good ideas and tried some of them... for example the Link from you Gerald to the newest dist, the Link goes to a 404 side since the dist from that day isnt anymore on that page so i removed the dist name and found the latest one from 2013.05.06 and after some other threads the link http://circuitco.com/support/index.php?title=BeagleBoneBlack with really the lastest one it seems. I tried to awake the screen maybe through hitting the keys from my keyboard and clicking the mouse but nothing happened. I tried to fine a Ubuntu or Debian Dist to put it onto an microSD card to start from them and checking if maybe drivers could be the problem but i didnt found a Image to put it into a SD card, only how to build my own image... what yet looked a bit complicated for me and i didnt tried it yet.

So i stayed with angstrom and flashing the SW onto the eMMC again, hoping it would fix my problem with the HDMI i started another try, but it didnt worked... so i ask my father to give me his BBB so i could maybe check if its all working with his one. Now doing really the same stuff... so connecting the BBB to my laptop via USB... checking that GateOne and Cloud9 is working all fine. So... now i did something different but i think not so much important, i didnt updated the SW. I removed the BBB from the Laptop and put on the HDMI cabel, Keyboard, Mouse and Power and started it right away. This time, there is a connection to the monitor and it starts the angstrom dist, omg... it worked. In some way happy but in another i wasnt... but yeah, maybe a Hardware problem? After that i updated the BBB with the latest dist 2013.05.08... the one from my father and mine too. Tried them both but same result... mine not working... that one from my father, working.

Any ideas what i could do with mine to get it fixed or should i RMA right away now? I tried 2 different Monitors even with the same result.

Thanks for such a cool device even its not yet like you want to have it, but i think it goes all in the right direction. Sorry for my bad english, iam from germany and i hope i didnt mezz up that much. :D

I will stay with both the RPi and the BBB since both are cool... i dont care about the stuff in the net about who is better, both are awesome and worth the effort.

Thanks for any reply and thanks for the good work you do here Gerald and the rest of you. :)

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[Gerald Coley]

OOPs. Just got past a few more ...

Sounds like maybe the one has an issue. Go ahead and request an RMA.

http://beagleboard.org/Support/RMA

Gerald

[Chuck Wuthrich]

Update from the RMA dept: "We have tested the HDMI interface on your unit with different TVs/monitors and all of them are working properly. We are able to see the Angstrom desktop on the TVs. The HDMI not working for you could be due to software issue."

So the hardware is fine, but the TV is not supported by the hardware. I'm still fuzzy on how to dump the EDID debugging information to a text file. Is there a guide on how to do this somewhere? If the BBB still doesn't output to my TV then I'll post that information here. Hopefully discover a solution to this problem. 

Thanks,

Chuck W. 

[Gerald Coley]

Search EDID on the mailing list. There is a discussion going on now. You may need a Linux PC to dump it, but we are working on something that should help. Not immediately, but in the near future.

I am also adding a trouble shooting guide to the SRM. I hope to have it out in a few days, if I can every stop answering emails. Here is part of what is going in the manual.

1.1            Trouble Shooting HDMI Issues

 Many people are having issues with getting HDMI to work on their TV/Display. Unfortunately, we do not have the resources to buy all the TVs and Monitors on the market today nor go to Ebay and buy all of the TVs and monitors made over the last five years to thoroughly test each and every one. We are depending on community members to help us get these tested and information provided on how to get them to work.

 One would think that if it worked on a lot of different TVs and monitors it would work on most if not all of them, assuming they meet the specification. However, there are other issues that could also result in these various TVs and monitors not working. The intent is that this page will be useful in navigating some of these issues. As others also find solutions, as long as we know about them, they will be added here as well.

The early release of the Software had some issues in the HDMI driver. Be sure and use the latest SW to take advantage of the improvements.

http://circuitco.com/support/index.php?title=Updating_The_Software

 

 1.1.1        EDID

EDID is the way the board requests information from the display and determines all the resolutions that it can support.  The driver on the board will then look at these timings and find the highest resolution that is compatible with the board and uses that resolution for the display. For more information on EDID, you can take a look at http://en.wikipedia.org/wiki/Extended_display_identification_data

 If the board is not able to read the EDID, for whatever reason, it does not have this information. A few possible reasons for this are:

 ·       Bad cable

·       Cable not plugged in all the way on both ends

·       Display not powered on. (It should still work powered off, but some displays do not).

1.1.2        DISPLAY SOURCE SELECTION

 One easy thing to overlook is that you need to select the display source that matches the port you are using on the TV. Some displays may auto select, so you may need to disconnect the other inputs until you are sure the display works with the board.

1.1.3        OUT OF SEQUENCE

Sometimes the display and the board can get confused. One way to prevent this is after everything is cabled up and running, you can power cycle the display, with the board still running. You can also try resetting the board and let it reboot to resync with the TV.

1.1.4        OVERSCAN

 Some displays use what is called overscan.  This can be seen in TVs and not so much on Monitors. It causes the image to be missing on the edges, such that you cannot see them displayed. Some higher end displays allow you to disable overscan.

 Most TVs have a mode that allows you to adjust the image. These are options like Normal, Wide, Zoom, or Fit. Normal seems to be the best option as it does not chop of the edges.  The other ones will cop of the edges.

 1.1.5        Taking a Nap

 In some cases the board can come up in a power down/screen save mode. No display will be present. This is due to the board believing that it is asleep. To some out of this, you will need to hit the keyboard or move the mouse.

 Once working, the board will time out and go back to sleep again. This can cause the display to go into a power down mode as well. You may need to turn the display back on again. Sometimes, it may take a minute or so for the display to catch up and show the image.

 

 1.1.6        AUDIO

 Audio will only work on TV resolutions. This is due to the fact that is the way the specification was written. Some displays have built in speakers and others require external. Make sure you have a TV resolution and speakers are connected if they are not built in. The SW should default to a TV resolution giving audio support. The HDMI driver should default to the highest audio supported resolution.

Gerald

[Chuck Wuthrich]

Awesome! I'll try this out as soon as I get it back in the mail. Thanks. :)

On Friday, May 10, 2013 2:52:58 PM UTC-4, darren.e...@gmail.com wrote:

On a BeagleBone Black we bring out the edid that has been read from by the NXP device to the file

/sys/class/drm/card0/card0-HDMI-A-1/edid

So for me I get:

root@beaglebone:/sys/class/drm/card0/card0-HDMI-A-1# xxd edid 

0000000: 00ff ffff ffff ff00 4c2d 9607 0000 0000  ........L-......

0000010: 2215 0103 8033 1d78 2aee 91a3 544c 9926  "....3.x*...TL.&

0000020: 0f50 5423 0800 8180 8140 8100 9500 b300  .PT#.....@......

0000030: 0101 0101 0101 023a 8018 7138 2d40 582c  .......:..q8-@X,

0000040: 4500 fd1e 1100 001e 023a 80d0 7238 2d40  E........:..r8-@

0000050: 102c 4580 fd1e 1100 001e 0000 00fd 0018  .,E.............

0000060: 4b1a 5117 000a 2020 2020 2020 0000 00fc  K.Q...      ....

0000070: 0053 3233 4137 3530 440a 2020 2020 015c  .S23A750D.    .\

0000080: 0203 28f1 4990 1f04 1305 1403 1220 2309  ..(.I........ #.

0000090: 0707 8301 0000 e200 0f6e 030c 0010 0000  .........n......

00000a0: 2d20 9004 0810 1810 011d 0072 51d0 1e20  - .........rQ.. 

00000b0: 6e28 5500 fd1e 1100 001e 011d 00bc 52d0  n(U...........R.

00000c0: 1e20 b828 5540 fd1e 1100 001e 011d 8018  . .(U@..........

00000d0: 711c 1620 582c 2500 fd1e 1100 009e 011d  q.. X,%.........

00000e0: 80d0 721c 1620 102c 2580 fd1e 1100 009e  ..r.. .,%.......

00000f0: 0000 0000 0000 0000 0000 0000 0000 0042  ...............B

Not sure if you have a BeagleBone Black in your hands as you RMA'd the last one, if you are doing it from a desktop PC it is typically the same technique to get the edid but the interface name in the directory path will likely be different.

Darren

[Chuck Wuthrich]

Gerald, thank you for putting together this helpful resource for troubleshooting display issues and also for all the hard work you are doing for this community.

Chuck W.

[Gerald Coley]

It is just a start! Needs more work. What is really needed is a way to force a resolution. We are working on that.

Gerald

[Darren Etheridge]

Chuck,

Just post the edid to this forum as soon as you can and we will figure out what is "special" about this monitor.

Also the kernel log with drm.debug=7 set on the kernel parameters will be very helpful.

Darren

[Venkat Bommakanti]

Thanks to you and your whole team for the great efforts.

In section 1.1 or elsewhere, if possible and you if think useful, could you pl. point to a link where one can find the latest/greatest list of HDMI monitors. And may be elsewhere, links pointing to lists for wifi-dongles, bluetotth-dongles, etc. Hopefulyy those links could be maintained in beaglebone.org or wherever you see fit.

thanks again,
/venkat

[Gerald Coley]

You can find the list at the address of the support link on the card that came in the box.

http://circuitco.com/support/index.php?title=BeagleBoneBlack

Just look under accessories in the table of contents.

Gerald

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[Chuck Wuthrich]

Hello -

I got the BBB back today. Thank you.

After hooking it up to wall power and TV and powering on, there is still no display. I reset the BBB, and the TV, still nothing.

I set the drm.debug=7 setting in the uEnv.txt file.

I have also logged into the terminal and issued this command:

/sys/class/drm/card0/card0-HDMI-A-1/edid

but nothing happens on screen that I can see. I'm not sure what to do now.

I can FTP into the BBB to grab any files that will help troubleshoot. Please let me know how to proceed.

Chuck W.

[Gerald Coley]

For the EDID parse to work, you need newer SW..

Upgrade to this development version http://dominion.thruhere.net/koen/angstrom/beaglebone/test-only-not-for-production-BBB-eMMC-flasher-2013.05.15.img.xz

Then try the parse method.

http://circuitco.com/support/index.php?title=BeagleBoneBlack_HDMI

Gerald

[Robert P. J. Day]

On Wed, 15 May 2013, Gerald Coley wrote:

> For the EDID parse to work, you need newer SW..
> Upgrade to this developmentversion�http://dominion.thruhere.net/koen/angstrom/beaglebone/test-only-not-for-production-BBB-
> eMMC-flasher-2013.05.15.img.xz
>
> Then try the parse method.
>
> http://circuitco.com/support/index.php?title=BeagleBoneBlack_HDMI

is this a version that might solve the jitter issue with my ASUS
VE228H? if not, then i'll just avoid wasting all the bandwidth of
downloading.

rday
--

========================================================================
Robert P. J. Day Ottawa, Ontario, CANADA
http://crashcourse.ca

Twitter: http://twitter.com/rpjday
LinkedIn: http://ca.linkedin.com/in/rpjday
========================================================================

[Chuck Wuthrich]

Latest test SW bricked my BBB. No LEDs when booting from eMMC, even though it looks like the flash was successful (4 solid LEDs).  

Chuck W.

[Gerald Coley]

You cannot brick the board. It worked fine for me. I have done it dozens of times.

Most likely  something went wrong in one of the steps. Did it take more than 45 minutes to complete the flashing process?

http://circuitco.com/support/index.php?title=Updating_The_Software

Gerald

[Chuck Wuthrich]

Yes, it took at least 45 minutes. I'm trying the flash again.

Chuck W.

[Gerald Coley]

Make sure you remove the SD card before you re-apply power. It can cause the board to hang. It happens to be oh, at least once a day.

Gerald

[Chuck Wuthrich]

The bad flash was an ID-10-T error. 

I can't login as "Boot", the BBB wants a password. I have tried nothing and have tried giving it a password. So I logged in as root and got this:

root@beaglebone:~# cd /sys/class/drm/card0/card0-HDMI-A-1/
root@beaglebone:/sys/class/drm/card0/card0-HDMI-A-1# parse-edid edid
parse-edid: parse-edid version 2.0.0
parse-edid: IO error reading EDID

Chuck W.

[Gerald Coley]

Login is "root". 

For the EDID parse to work you need this version http://dominion.thruhere.net/koen/angstrom/beaglebone/test-only-not-for-production-BBB-eMMC-flasher-2013.05.15.img.xz

This is a test image for our next production release on 5/20. It has the parse function included.

Gerald

[Chuck Wuthrich]

Thanks. The instructions here say to login as "boot" FYI. I thought it sounded funny. I was logged in as "root".

I downloaded and flashed the image you gave me in an earlier post. Has it changed in the last ~4 hours?

Chuck W.

[Gerald Coley]

It changes pretty much every day when it comes to experimental images. We tested it today. The parse works on this updated version. 

The  page was also updated about an hour ago with the expeimental link.. http://circuitco.com/support/index.php?title=BeagleBoneBlack_HDMI

Gerald

[Chuck Wuthrich]

Ok - Like I posted before, step 3 has you logging in as "boot". I followed the instructions (as root) and parse edid isn't working for me. I posted the input/output above. I'm using Gate-one as a terminal since there isn't a display. I don't know if this makes a difference?

I'm out for the night. Have a good one.

Chuck W. 

[Darren Etheridge]

Parse-edid is reporting version string so it is there therefore the image is fine but the edid file is empty so either edid is not being read back from monitor or what is being read back and rejected for bad checksum or something.  I think we have to get the kernel log with drm.debug=7 set.  Does the cable definitely work with something else with a sensible resolution?

[Gerald Coley]

I will correct it. My mistake..

Gerald

[Gerald Coley]

It has been corrected.

Gerald

[Chuck Wuthrich]

The cable is untested, brand new from Newegg. Perhaps I'll take the BBB to Walmart or Target and hook it up to a newer display. I'll get back to you. Thanks Gerald and Darren.

[Chuck Wuthrich]

Thanks - I need to test my mini-HDMI cable first. Then I will figure out what to do from there.

Chuck W.

On Friday, May 17, 2013 11:37:22 AM UTC-4, Moby wrote:

I  had the same problem too.

I used RMA.

Then I got a new board.

The new board is working HDMI very well.

Please use RMA retry.

[Chuck Wuthrich]

Update - I brought my BBB to work and tested the HDMI out on two Sony 52" HDTVs. Neither worked using the my mini-HDMI cable. I hooked up a coworker's cell phone my cable and got nothing. Another coworker has a mini HDMI to DVI converter. That worked on both the BBB and the cell phone. 

Long story short: I have requested an RMA for the cable from Newegg.  

When I get a new cable I will post results. 

Chuck W.

[Chuck Wuthrich]

Yes - I am running x11vnc server on the BBB right now. There's a great thread on this board for setting that up and having it run forever. 

Chuck W.

On Thursday, May 23, 2013 1:06:09 PM UTC-4, johnath...@gmail.com wrote:

Have you tried to start vnc on it?

[Chuck Wuthrich]

Here's the StackOverflow question I asked regarding getting the x11vnc server to run forever with links to the blog and google group thread.

http://stackoverflow.com/questions/16650672/x11vnc-server-exits-when-i-close-tightvnc-viewer

Chuck W.

[Wilfredo Nieves]

It's good to see that my guide is helping others out. There was a suggestion to make it simpler but I haven't had a chance to check it out. I will try to check it this weekend and update the guide if it works.

-Wil

--

[Koen Kooi]

Op 24 mei 2013, om 16:01 heeft Wilfredo Nieves <wilfre...@gmail.com> het volgende geschreven:

> It's good to see that my guide is helping others out. There was a suggestion to make it simpler

It's just 2 commands:

opkg update ; opkg install angstrom-x11vnc-xinit

[Wilfredo Nieves]

Ok thanks. I'll try it either tonight or tomorrow.

-Wil

[Gerald Coley]

You cannot change anything on the resolutions. It is being worked on. Maybe someday the work will pay off.

Gerald

On Sun, May 26, 2013 at 12:22 PM, <rob.we...@gmail.com> wrote:

At least the X11vnc keeps me alive with the BBB. The HDMI does not.  Perhaps I missed some answer with respect to the HDMI. 
I have the latest image running and can do EDID information from my TV . I noticed that my Xvnc11 changed to another resolution once I had connected my tv (It changed to widescreen).  All fine, but no HDMI output (yet). 
Do I have to change something or do something with the EDID info?  

Btw the monitor preferences show an unknown monitor (the default) with stated resolution of 1280x720 and a refresh rate of 0.
Should the last value not be 50 or 60? If so, where can I change that.

Thanks in advance
Rob Weijers.

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--

[Chuck Wuthrich]

I have received an RMA confirmation from Newegg on my cable. I asked for a replacement cable. After looking at the specs though, I am beginning to wonder if this cable is compatible with the BBB HDMI port. 

Here is a description and link to the cable:

675793 6 ft. High Speed HDMI Cable with Ethernet ,Type D Micro M/M Cable

The part that has me concerned is the "with Ethernet". Is this the wrong cable?

Chuck W.

[Gerald Coley]

Good question. Need to do some research. Take a look at the product description on this one.

http://www.amazon.com/electronics/dp/B004W525TS

Gerald

[Chuck Wuthrich]

It appears that they have the same specs:

 

From Amazon:  High Speed HDMI Cable with Ethernet ,Type D Micro M/M Cable, eForCity  6FT

Mine- Newegg:  High Speed HDMI Cable with Ethernet ,Type D Micro M/M Cable, 675793 6 ft.

Have you tested the eForCity cable and found it to be compatible with the BBB? If so, then the replacement cable I have coming back should also work since it has the same specs. I guess we'll find out. 

Chuck W.

[Gerald Coley]

The Ethernet versions are supposed to be backward compatible. At least that is the word.

Gerald

[David Anders]

Chuck,

thanks for the link. i have ordered some of these to do some testing on as well as complete disassembly of the cable to verify the connections.

i have already found a number of adapters and cables that don't properly connect the ground signals. this generally works ok if all of the devices are plugged into the same outlets with the same ground pins, for example a dvd player connected to a LCD tv both connected to the same AC outlet.

this becomes a little more complicated when devices such as the BeagleBone Black that is connected via a separate power supply....

Dave

[Chuck Wuthrich]

Newegg ran out the the cable that I RMA'd (linked above), so I have ordered this adapter which I will use with a spare HDMI cable that I already have. I'll post an update once I have tested the adapter.

http://www.newegg.com/Product/Product.aspx?Item=9SIA0PG0RV2736

Chuck W.

[Chuck Wuthrich]

Update. I received the mini-HDMI adapter and used a quality HDMI cable from Amazon. The display is working fine on my ~2008 Sharp Aquos HDTV. The original mini-HDMI cable was the problem. 

Chuck W.

[Tommy Snyder]

Was it the original cable's brand or was it just a faulty cable?

Also, would you mind sharing links to what does/doesn't work so we can add that information to the support wiki.

Thanks,

Tommy

[Chuck Wuthrich]

I'm not sure if the original cable was bad or ungrounded. I tested the cable using a coworker's phone with mini-HDMI and it didn't output display either. I'm guessing it was a bad cable. Here are links:

Original mini-HDMI Cable (bad/ungrounded)

Working mini-HDMI to HDMI Adapter

HDMI Cable from Amazon

Sharp Aquos TV Manual

Chuck W.

[Chuck Wuthrich]

One thing to note regarding this mini-HDMI adapter: It's big and interferes with the USB hub connector that I'm using on the BBB. It's a really tight fit. 

Chuck W.

[Gerald Coley]

Yes, some of those microHDMI connectors have a lot of plastic around them and it will make it a little tight.

Gerald

[mblat]

I have a strange problem here.

First I am complete Linux noob, so bear with me.

Got BBB, updated to latest version ( cat /etc/dogtag reads "Cloud9 GNOME Image 2013.06.20 ).

Upon powerup there is Beagleboeo logo displayed.  The board continues to boot, logo disappears.  Board boots fine, I can ssh to it

However, no prompt is shown on the monitor.

I know that monitor is fine, because when I boot board to Ubuntu or Debian there is a prompt display on the same monitor, same cable, etc.....  Does it mean that the latest distribution disables monitor output?

Below is results of edid parse:

root@beaglebone:~# cd /sys/class/drm/card0/card0-HDMI-A-1/

root@beaglebone:/sys/class/drm/card0/card0-HDMI-A-1# parse-edid edid

parse-edid: parse-edid version 2.0.0

parse-edid: EDID checksum passed.

        # EDID version 1 revision 3

Section "Monitor"

        # Block type: 2:0 3:fd

        # Block type: 2:0 3:fc

        Identifier "X203H"

        VendorName "ACR"

        ModelName "X203H"

        # Block type: 2:0 3:fd

        HorizSync 30-80

        VertRefresh 55-75

        # Max dot clock (video bandwidth) 160 MHz

        # Block type: 2:0 3:fc

        # Block type: 2:0 3:ff

        # DPMS capabilities: Active off:yes  Suspend:no  Standby:no

        Mode    "1600x900"      # vfreq 59.946Hz, hfreq 55.990kHz

                DotClock        118.250000

                HTimings        1600 1688 1856 2112

                VTimings        900 903 908 934

                Flags   "+HSync" "-VSync"

        EndMode

        # Block type: 2:0 3:fd

        # Block type: 2:0 3:fc

        # Block type: 2:0 3:ff

EndSection

root@beaglebone:/sys/class/drm/card0/card0-HDMI-A-1#

Thank you

[Gerald Coley]

You can try and see if any of the other settings may work. You are not likely to have very many, based on audio support, but you could try some of the other ones.

http://circuitco.com/support/index.php?title=BeagleBoneBlack_HDMI#Forcing_A_Resolution

Gerald

--

[asgi...@gmail.com]

Gerald,

I tried getting my new Beaglebone Black working with a small 7 inch display purchased from Adafruit.  

Because it didn't work I went into debug mode for quite some time.  Please see my Adafruit forum post: http://forums.adafruit.com/viewtopic.php?f=49&t=41690 

In testing the BBB worked fine with a Sony Bravia KLD-46EX521 TV with the stock Angstrom image (kernel 3.2.13).

It's pretty clear to me that the HDMI circuity is sound, we need more software support!

If the EDID information doesn't read back from the device for whatever reason, or there's some error/bug in the EDID exchange, there needs to be a way to set a static resolution on the BBB that doesn't get bombed on by a failing part of the "EDID/DRM subsystem."

Above you had mentioned you guys are working on making this route an option - possibly via the uEnv.txt file?  Please update us on the progress of this.

Thanks,

~Andy

[asgi...@gmail.com]

Gerald,

Also, I followed this exactly as you suggested and it didn't work...

http://circuitco.com/support/index.php?title=BeagleBoneBlack_HDMI#Forcing_A_Resolution

Any other ideas?  Can it be forced from the uEnv.txt file?

Thanks for your time,

~Andy

[Gerald Coley]

I have no such update. I have no indication that any work is being done on this. There is a way with a serial port to change it, but there are limitations.

http://circuitco.com/support/index.php?title=BeagleBoneBlack_HDMI#Forcing_A_Resolution

You can set the resolution via uENV.txt file and it works great, at boot up. The DRM driver it appears does not even know the uENV.txt file exists. The issue seems to be the DRM driver.

Gerald

--

[Gerald Coley]

It cannot be forced for the uENV.txt file. If you read the WIKI you would see that it says that only works on boot up. That is what I said in my previous response as well.

Until the SW folks get this fixed, there isn't anything I can do to force a resolution.

Gerald

~Andy

--

[calist...@gmail.com]

It looks a bit strange…

I have a couple of BBB and for the most part the HDMI is fine. However I just installed Arch on it (no problems) and then the MT7601 drivers and now the screen is blank. I can only access via SSH. Not even entering X mode yet.

Dave.

On Sunday, May 5, 2013 9:12:27 PM UTC+8, Chuck Wuthrich wrote:

Hi - I have set up the BBB on Windows and it appears to be running correctly. I can browse the files and open up the browser to interact. I'm not getting any video when I plug it into my HDTV though. I have it hooked up using a 5v power supply, a micro HDMI cable, and a USB hub with keyboard and mouse. The USR LEDs are blinking like something is going on but I get no video. The TV is a Sharp 1080p LCD TV.

What am I doing wrong?

[ElectronSciences]

I just received a BBB and had the same problem as described above.  It is now September as I write.  My BBB system Reference manual Rev A5.2, on page 18 in 3.4.2 describing setting up the board in stand-alone configuration, directs in big red letters not to plug the uHDMI to the board until the board has fully booted.  Geralds says the board senses the video mode from the TV.  This obviously can't happen if disconnected.  After the board was booted and the HDMI video was indeed not working (TV reports no signal), I hit the reset button on the BBB and almost immediately got the BBB logo on screen.  The board continued and booted to the default screen as shown in figure 16.  So, is the manual out of date on this point?

On Tuesday, May 7, 2013 8:54:49 AM UTC-5, moby wrote:

My BBB HDMI does not work, either ! 

[Gerald Coley]

Follow the debugging guide as written on the support Wiki. http://circuitco.com/support/index.php?title=BeagleBoneBlack_HDMI and you will see that it says to do exactly what you did.

The issue is this. Some monitor are not valid and they source voltage on the 5V pins where they should not. This is just a precaution to guard against that and to take it a step at a time.

Fell free to plug the board in before power up if you see no issues.

Gerald

--

[Scott Force]

I was having a similar issue which I finally figured out last night.  For me the TV & Angstrom were both indicating that there was no connection what so ever. This didn't make sense, as I had made sure to purchase one of the known good HDMI cables from the WIKI page (http://elinux.org/Beagleboard:BeagleBone_Black_Accessories#Working_HDMI_Cables).

As it turns, I get video out when I removed the BBB from it's case. Apparently the Adafruit Clear Top Case (http://www.adafruit.com/products/1555) & the Monoprice cable (http://www.monoprice.com/products/product.asp?c_id=102&cp_id=10253&cs_id=1025301&p_id=7557&seq=1&format=2) from the WIKI don't play nicely together. The cable seems like it is in all the way but is just tiny bit shy.

Now I just have to decide which component I am replacing.  

Scott