Re: BeagleBone Black - No HDMI Output

[Chuck Wuthrich]

I am also having this issue. I RMA'd my board back to manufacturer. Here a link to my post with responses from some BeagleBone folks.

goo.gl/hj5rq

Chuck W.

On Tuesday, May 7, 2013 10:06:19 AM UTC-4, ghalf...@googlemail.com wrote:

I've just received a BeagleBone Black, but I can't get the HDMI output to work for love nor money. I'm using a known-good micro-HDMI to HDMI adapter, and I've tried connecting it to a 1280x1024 monitor via a HDMI to DVI-D cable and to a 1080p TV using a straight HDMI cable. The TV knows there's something there (it disables inputs that are inactive, and it allows me to select the HDMI input to which the BeagleBone is connected) but says "No Signal," whereas the monitor just says "No Signal."

I've tried both the preinstalled Angstrom Linux and the console version of Ubuntu 13.04 - no dice with either. I've got a proper micro-HDMI to HDMI cable arriving tomorrow, just in case there's something the BeagleBone Black doesn't like about the adapter I'm using (although I tested it on a Nokia 808 PureView, and it worked fine.)

Anybody any ideas what might be preventing the BeagleBone Black from bringing up a display? I can see nothing in the kernel logs that sheds any light on the matter. It sees the virtual HDMI cape in Slot 6 and appears to load the firmware cape-boneblack-hdmi-00A0.dtbo fine.

[Gerald Coley]

Give this a try. I expect this to be the production image.

  http://dominion.thruhere.net/koen/angstrom/beaglebone/BBB-eMMC-flasher-2013.05.06.img.xz

Gerald

On Tue, May 7, 2013 at 10:42 AM, <ghalf...@googlemail.com> wrote:

Chatting to some of the guys on IRC, and in the process made some logs. These are from Ubuntu 13.04:

Booting with an HDMI TV connected, forced to 720@50Hz:
http://pastebin.com/ESrPKVdJ

Booting with my monitor (via HDMI-to-DVI cable) attached, no forced video mode:
http://pastebin.com/kKN4Ejiq

Booting with my monitor (via HDMI-to-DVI cable) attached, forced to 720p@60Hz:
http://pastebin.com/052V04r3

Each time, there is no video output - although, as mentioned, the TV at least knows there's something there. The BeagleBone Black also brings a second monitor out of standby, but it then times out, says no video signal present, returns to standby, wakes up, says no video signal present, returns to standby, wakes up... And so on, and so forth.

-Gareth

--
For more options, visit http://beagleboard.org/discuss
---
You received this message because you are subscribed to the Google Groups "BeagleBoard" group.
To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard...@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
 
 

--

Gerald

 

ger...@beagleboard.org

g-co...@ti.com

http://beagleboard.org/

http://circuitco.com/support/

[Gerald Coley]

Request an RMA!

Gerald

On Tuesday, May 7, 2013, wrote:

On Tuesday, 7 May 2013 16:52:20 UTC+1, Gerald wrote:

Give this a try. I expect this to be the production image.

No joy, I'm afraid. Booted the SD card - no image on monitor - and left it to do its thing while I had my tea. SSH'd in an hour or so later, made sure nothing was running, shut the system down. Removed SD card, rebooted from eMMC - still no image on monitor.

-Gareth

--
For more options, visit http://beagleboard.org/discuss
---
You received this message because you are subscribed to the Google Groups "BeagleBoard" group.
To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard...@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
 
 

[Gerald Coley]

Maybe. Not sure. We are still learning about some of these connectors and how they hold up. They can have issue sometime with quality. They are small and light!.

Just do the RMA and we will take care of you!

Gerald

On Tue, May 7, 2013 at 3:33 PM, <ghalf...@googlemail.com> wrote:

On Tuesday, 7 May 2013 18:21:20 UTC+1, Gerald wrote:

Request an RMA!

I was afraid you would say that. I ordered it from Farnell here in the UK, and they're completely out of stock until June. Normally, that'd be little more than an inconvenience - but I'm reviewing the device for Imagine Publishing's Linux User & Developer Magazine with a deadline of Monday.

You're thinking it definitely sounds like a hardware fault with the board, then? Just my luck!

-Gareth

--
For more options, visit http://beagleboard.org/discuss
---
You received this message because you are subscribed to the Google Groups "BeagleBoard" group.
To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard...@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
 
 

[SDitty]

Pardon my noobosity, but how do I force the output to be 720p@60Hz?

[Casey Brittain]

https://groups.google.com/d/msg/beagleboard/noddoRqaG5g/RiG1rpLoh4EJ

[Gerald Coley]

Did you try anything from this page?

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

Gerald

On Mon, May 20, 2013 at 1:00 AM, <jamesb...@gmail.com> wrote:

Hello

Recently got a BBB and have updated it to the latest revision of the Angstrom distribution and also did the whole opkg upgrade via SSH, but I cant for the life of me get anything out of the HDMI.

So far this BBB is like turning on a PC without turning on the monitor, really struggling to do anything satisfying on it yet. I just got my micro HDMI to HDMI cable in the post today so thought I would be all set, but the TV and my monitor just stick their nose up at the BBB and do nothing. Its like the cable isn't even plugged in.

Yes I can get into SSH and do stuff, but I am not a linux guru so have little to do there at this stage, and I can blink lights and turn on GPIO etc via the Cloud9 IDE, but thats about it. I assume this thing boots to a GUI or something by default? Have watched a few vids on youtube, and its simply plug plug and go and they get a GUI.

I must either be stupid, dont know what im doing, or something is wrong...

James

On Wednesday, May 8, 2013 2:06:19 AM UTC+12, ghalf...@googlemail.com wrote:

I've just received a BeagleBone Black, but I can't get the HDMI output to work for love nor money. I'm using a known-good micro-HDMI to HDMI adapter, and I've tried connecting it to a 1280x1024 monitor via a HDMI to DVI-D cable and to a 1080p TV using a straight HDMI cable. The TV knows there's something there (it disables inputs that are inactive, and it allows me to select the HDMI input to which the BeagleBone is connected) but says "No Signal," whereas the monitor just says "No Signal."

I've tried both the preinstalled Angstrom Linux and the console version of Ubuntu 13.04 - no dice with either. I've got a proper micro-HDMI to HDMI cable arriving tomorrow, just in case there's something the BeagleBone Black doesn't like about the adapter I'm using (although I tested it on a Nokia 808 PureView, and it worked fine.)

Anybody any ideas what might be preventing the BeagleBone Black from bringing up a display? I can see nothing in the kernel logs that sheds any light on the matter. It sees the virtual HDMI cape in Slot 6 and appears to load the firmware cape-boneblack-hdmi-00A0.dtbo fine.

--

For more options, visit http://beagleboard.org/discuss
---
You received this message because you are subscribed to the Google Groups "BeagleBoard" group.
To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard...@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
 
 

[Gerald Coley]

OK. Send it in. Request an RMA.

http:beagleboard.org/support/RMA

Gerald

On Mon, May 20, 2013 at 5:13 PM, <jamesb...@gmail.com> wrote:

Hi Gerald,

Yes I had read that and followed the instructions, but still nothing. TV enables me to select the HDMI when its plugged in, but says there is nothing connected once it is plugged in. Monitor is just blank.

I don't have a USB to Serial cable for the BBB, just another thing I didn't realize I would have to buy extra... 

Ill have a read on the net again and see what its compatible with and see if I do have a USB to Serial cable that will work with this.

James

[Gerald Coley]

Glad it worked!

Gerald

On Mon, May 20, 2013 at 11:44 PM, <jamesb...@gmail.com> wrote:

Hi Gerald

No need, after using the latest image that just came out for the BBB, 20/05/2013, it works correctly.

http://dominion.thruhere.net/koen/angstrom/beaglebone/BBB-eMMC-flasher-2013.05.20.img.xz

Boots to the TV at 720p. Had to adjust the TV to be +1 to allow it to display the full image, but all looks good now.

Thanks for the help.

Regards

James

[Gerald Coley]

You know. If there was patch for this, I would think it would already be included. If it is working with the original, then I suggest you go back to he original image.

I have no idea what is going on here with the DRM driver and all those TVs and monitors out there. I would welcome some help from anyone that would like to help us figure out why so many TVs and monitors work flawlessly and why some do not.

Gerald

On Tue, May 21, 2013 at 4:40 PM, <gia...@mariani.ws> wrote:

I'm still having trouble with HDMI flicker after updating to:

http://dominion.thruhere.net/koen/angstrom/beaglebone/BBB-eMMC-flasher-2013.05.20.img.xz

The HDMI was working (without audio) with the original eMMC image that came with the BBB.

Is there a patch?  In my google searching I did find a youtube video purporting to show the same issue I had and a patch for the hdmi framer.

[SDitty]

Sadly the 5-20 image has not changed the results I am seeing, or not seeing on either of the two HD TVs or VGA monitor I have been trying to work with.  I have tried the procedure on the linked page with both HD displays.  I am willing to try the last procedure once I get a USB to serial cable, but I find the instructions unclear. I have interjected my questions in [ ] below.

After you have updated the SW and connected the cable, perform the following steps: [I see where the cable is to be connected to the pins on the BBB, but what is the other end connected to? Just a power source? A Windows machine? A Linux machine?]

1) Power on the board with it connected to the display. Make sure the display is not in a sleep mode.
2) Wait for the board to finish the initial boot, about 3 minutes.
3) You should see a login. Type "root" and hit ENTER.   [Where will I see this? On the display? (Isn't that the problem we are trying to solve?)]
4) Type "cd /sys/class/drm/card0/card0-HDMI-A-1/" and hit ENTER.
5) Type "parse-edid edid"and hit ENTER.
6) You should get a printout similar to the one below: .....

Additional guidance please.

Thanks,

Steve

[Gerald Coley]

The 5-20 image works for some people that did not work before. For others it breaks things. 

Here is the main issue. 3.8 kernel uses DRM. We have no way currently to manually set the resolution on the HDMI. It is all up to the EDID exchange of information which is suspect on a lot of displays. There is a 5/18 test release that worked fine for 1920x1080. The 5/20 release was supposed to be that release,. If you will notice on the WikI the 5/20 is not listed. Until it is, it is not an official release. 

And this is coming direct from the right hand.

Gerald

On Tue, May 21, 2013 at 11:11 PM, <jamesb...@gmail.com> wrote:

That link I posted above for the latest image, I cant actually remember where I got it from now.... Trawling seems to have found it.
When I go to the official channels, its still an old image showing.

Left hand not connected to the right hand somehow?

Have no idea who is who and who does what when it comes to releasing of distributions. So maybe that link isnt official yet and still has issues?.... who knows.

Makes the LCD4 CAPE work along with my HDMI, so im not complaining at this stage :)

[SDitty]

Success!  I was ready to give up and go to RMA.  But as a last effort, I decided to buy a micro HDMI to HDMI cable and bypass the micro HDMI/HDMI adapter I had been using.  Booted right up with the latest official release, beautiful video, no more problem.

Woohoo!

[Gerald Coley]

Awesome! Unfortunately, I have heard this before. I am trying to get something going to where everyone can buy pretested cables. Nothing solid yet but stay tuned!

Gerald

[Gianni Mariani]

I have a micro-hdmi adaptor too, however the video works with the Aoril-12 angstrom build. The more recent builds up to May 20 all flicker. Would this be due to the adaptor?

You received this message because you are subscribed to a topic in the Google Groups "BeagleBoard" group.
To unsubscribe from this topic, visit https://groups.google.com/d/topic/beagleboard/0fMTXLPuGS4/unsubscribe?hl=en.
To unsubscribe from this group and all its topics, send an email to beagleboard...@googlegroups.com.

[SDitty]

I don't know the HDMI standard or HDMI hardware well enough to know for sure if it's possible. Based on my experience though, I would replace the adapter with a cable or a verified-working adapter. 

As an FYI, this is the cable I achieved success with http://www.amazon.com/gp/product/B00B1DC9HM.

[ens...@gmail.com]

Initially had the same problem.

Connected old screen via a micro-HDMI to VGA adapter. Screen was flickering with the factory image on the BBB.

Created a microSSD image to version 6-6-2013

For a brief moment (a few seconds) I could see the UI on the screen.

root@beaglebone:~# uname -a

Linux beaglebone 3.8.13 #1 SMP Wed Jun 5 11:21:00 CEST 2013 armv7l GNU/Linux

root@beaglebone:~# [  111.339859] tilcdc 4830e000.fb: timeout waiting for framedone

After the timeout event, the turn on the monitor turned black.

Hope somebody got a step futher.

Marco

[Gianni Mariani]

I connected it to an old TV and it flickers (mostly black) with the post April builds.  The last build I tried in 6/6 and it flickers in the same way.

I swapped out the micro hdmi to hdmi cable as well, still flickers. I tried a different tv and it kind of improved.  There is a jitter every second or so and the contents are off the screen but at least I can see the screen (annoying as though).

So, I know it is able to work on my older screen since it worked with the original image that came with the board (minus the audio).

--

For more options, visit http://beagleboard.org/discuss
---

You received this message because you are subscribed to a topic in the Google Groups "BeagleBoard" group.

To unsubscribe from this topic, visit https://groups.google.com/d/topic/beagleboard/0fMTXLPuGS4/unsubscribe.

[linhd...@gmail.com]

Hi

I've just bought BBB, I tried Angstrom Linux 05.20, 06.06, 06.17, 06.20 , Ubuntu 12.10, 13.04. There is no HDMI signal. I had checked EDID information and there was an error: "IO error reading EDID"

I use TCL and Samsung TV

What should i do now

[Gerald Coley]

Sounds like it cannot read your EDID. You need to make sure all power supplies are plugged into the same power strip and that you display is not in a sleep mode. I also suggest that you try the latest image as well.

Gerald

--

For more options, visit http://beagleboard.org/discuss
---

You received this message because you are subscribed to the Google Groups "BeagleBoard" group.

To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard...@googlegroups.com.

For more options, visit https://groups.google.com/groups/opt_out.
 
 

[linhd...@gmail.com]

I tried again with Angstrom Linux 06.20 : http://dominion.thruhere.net/koen/angstrom/beaglebone/BBB-eMMC-flasher-2013.06.20.img.xz

Connected to TV and still no signal...

I used Putty connect to BBB and check EDID information, this is the log:

login as: root
root@192.168.7.2's password:
root@beaglebone:# cat /proc/version
Linux version 3.8.13 (koen@rrMBP) (gcc version 4.7.3 20130205 (prerelease) (Linaro GCC 4.7-2013.02-01) ) #1 SMP Tue Jun 18 02:11:09 EDT 2013
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
root@beaglebone:/sys/class/drm/card0/card0-HDMI-A-1#

Seems like I need a DVI LCD monitor !!!

[Gerald Coley]

What is your Samsung TV model and how old is it?

Gerald

--

For more options, visit http://beagleboard.org/discuss
---
You received this message because you are subscribed to the Google Groups "BeagleBoard" group.
To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard...@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
 
 

[linhd...@gmail.com]

It's a Samsung series 7 (D7000) Smart TV - model 2011

And a TCL LCD TV 24"

[Gerald Coley]

Have you tried to force a resolution my modifying the uENV.TX file?

  optargs=video=HDMI-A-1:1920x1080@24

Gerald

On Sun, Jun 23, 2013 at 12:28 PM, <linhd...@gmail.com> wrote:

It's a Samsung series 7 (D7000) Smart TV - model 2011

And a TCL LCD TV 24"

--

For more options, visit http://beagleboard.org/discuss
---
You received this message because you are subscribed to the Google Groups "BeagleBoard" group.
To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard...@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
 
 

[linhd...@gmail.com]

I tried and still nothing

login as: root
root@192.168.7.2's password:
root@beaglebone:~# cat /proc/cmdline
console=ttyO0,115200n8 video=HDMI-A-1:1920x1080@24 root=/dev/mmcblk0p2 ro rootfstype=ext4 rootwait
root@beaglebone:~# fbset


mode "1024x768-0"
        # D: 0.000 MHz, H: 0.000 kHz, V: 0.000 Hz
        geometry 1024 768 1024 768 16
        timings 0 0 0 0 0 0 0
        accel true
        rgba 5/11,6/5,5/0,0/0
endmode


root@beaglebone:~# xrandr
Can't open display

[Gerald Coley]

I suggest you go the RMA route. If it can't read the EDID from a display that is powered up and not asleep, then it can't figure things out for sure.

http://beagleboard.org/Support/RMA

Gerald

--

For more options, visit http://beagleboard.org/discuss
---
You received this message because you are subscribed to the Google Groups "BeagleBoard" group.
To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard...@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
 
 

[Charles Steinkuehler]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

1920x1080@24 is an odd-ball resolution that most monitors won't support.

If you don't see an HDMI display, IMHO the first thing to try is
forcing a resolution that all HDMI displays are required to support, ie:

video=HDMI-A-1:640x480@60

If that works, you just have to figure out a resolution your monitor
and 'bone will both be happy with.

On 6/24/2013 1:42 AM, linhd...@gmail.com wrote:
> I tried and still nothing login as: root ro...@192.168.7.2's

- --
Charles Steinkuehler
cha...@steinkuehler.net
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (MingW32)
Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/

iEYEARECAAYFAlHIPmsACgkQLywbqEHdNFzO0gCgxGr7C57o8BydSRsg/ATgSlY7
8+YAn172f4A8rbLF49v0tSjbkcHyCn9E
=Sym4
-----END PGP SIGNATURE-----

[Daniel Escasa]

Sabi ni Gerald noong Wednesday, May 22, 2013 7:27:37 AM UTC+8:

You know. If there was patch for this, I would think it would already be included. If it is working with the original, then I suggest you go back to he original image.

I have no idea what is going on here with the DRM driver and all those TVs and monitors out there. I would welcome some help from anyone that would like to help us figure out why so many TVs and monitors work flawlessly and why some do not.

If it helps, mine worked. Here's the label at the back of the monitor:

Pardon the funky angle, had to work around some obstacles :)

Also, haven't had the chance to try the audio yet.

[kwja...@roadrunner.com]

Something you may want to check.  Looking through the users manual for my Samsung TV, it says that the TV can only be used as an HDMI monitor on the first HDMI input. My BBB only works on the HDMI1 input. Using the 3 other inputs gives me a black screen with the "no signal" message.

[kloo...@gmail.com]

I had same problem. Its the cable. Get a HDMI to DVI. Worked like a charm.

[hone...@gmail.com]

I met similar issue as well. My monitor is ASUS LS221H which can correctly display outputted from my mobile phone Xperia Neo V via HDMI. From here, we can confirm the monitor and the cable both function well. After powering up, sometimes I could see the logo from BeagleBone Black. Then, what I could see is just no signal reported from the monitor.

I referenced the page, http://circuitco.com/support/index.php?title=BeagleBoneBlack_HDMI, and tried something described in the page via terminal https://192.168.7.2/

Followings are some information of my board.

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

Screen 0: minimum 320 x 200, current 1280 x 720, maximum 2048 x 2048                                                                                                                         

HDMI-0 connected 1280x720+0+0 (0x42) normal (normal left inverted right x axis y axis) 474mm x 296mm                                                                                         

       Identifier: 0x40                                                                                                                                                                      

       Timestamp:  1523547016

       Subpixel:   unknown

       Gamma:      1.0:1.0:1.0

       Brightness: 1.0

       Clones:

       CRTC:       0

       CRTCs:      0

       Transform:  1.000000 0.000000 0.000000

                   0.000000 1.000000 0.000000

                   0.000000 0.000000 1.000000

                  filter:

       EDID:

               00ffffffffffff000469f12201010101

               20130103802f1e782e78f5a655489b26

               125054bfef80b30081809500950f9040

               714f0101010121399030621a274068b0

               3600da281100001c000000ff0039384c

               4d56443030343433360a000000fd0038

               4b1f5111000a202020202020000000fc

               00415355532d4c5332323148ffff01ff

               02031e764b909f859484930312010716

               230907078301000065030c000000023a

               801871382d40582c9600da2811000018

               023a80d072382d40102c4580da281100

               001e011d8018711c1620582c2500da28

               1100009e011d80d0721c1620102c2580

               da281100009e011d00bc52d01e20b828

               5540da281100001e00000000000000dd

  1280x720 (0x41)   74.2MHz +HSync +VSync

        h: width  1280 start 1720 end 1760 total 1980 skew    0 clock   37.5KHz

        v: height  720 start  725 end  730 total  750           clock   50.0Hz

  1280x720 (0x42)   74.2MHz +HSync +VSync *current

        h: width  1280 start 1390 end 1430 total 1650 skew    0 clock   45.0KHz

        v: height  720 start  725 end  730 total  750           clock   60.0Hz

  720x576 (0x43)   27.0MHz -HSync -VSync

        h: width   720 start  732 end  796 total  864 skew    0 clock   31.2KHz

        v: height  576 start  581 end  586 total  625           clock   50.0Hz

  720x480 (0x44)   27.0MHz -HSync -VSync

        h: width   720 start  736 end  798 total  858 skew    0 clock   31.5KHz

        v: height  480 start  489 end  495 total  525           clock   59.9Hz

  640x480 (0x45)   25.2MHz -HSync -VSync

        h: width   640 start  656 end  752 total  800 skew    0 clock   31.5KHz

        v: height  480 start  490 end  492 total  525           clock   59.9Hz

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:ff

       # Block type: 2:0 3:fd

       # Block type: 2:0 3:fc

       Identifier "ASUS-LS221Hÿÿ"

       VendorName "ACI"

       ModelName "ASUS-LS221Hÿÿ"

       # Block type: 2:0 3:ff

       # Block type: 2:0 3:fd

       HorizSync 31-81

       VertRefresh 56-75

       # Max dot clock (video bandwidth) 170 MHz

       # Block type: 2:0 3:fc

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

                                                                                                                                                                                             

       Mode    "1680x1050"     # vfreq 59.954Hz, hfreq 65.290kHz

               DotClock        146.250000

               HTimings        1680 1784 1960 2240

               VTimings        1050 1053 1059 1089

               Flags   "+HSync" "-VSync"

       EndMode

       # Block type: 2:0 3:ff

       # Block type: 2:0 3:fd

       # Block type: 2:0 3:fc

EndSection

ID.txt

Cloud9 GNOME Image 2013.06.20

root@beaglebone:~# cat /proc/cmdline 

console=ttyO0,115200n8 video=HDMI-A-1::640x480@60 root=/dev/mmcblk0p2 ro rootfstype=ext4 rootwait

Finally, the three steps below work like a charm

root@beaglebone:~# export XAUTHORITY=`ls /var/run/gdm/auth-for-root-*/database` 

root@beaglebone:~# export DISPLAY=:0.0 

root@beaglebone:~# xrandr --output HDMI-0 --mode 1280x720 --rate 60

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

                                                                                                                                                                                             

mode "1280x720-0"

       # D: 0.000 MHz, H: 0.000 kHz, V: 0.000 Hz

       geometry 1280 720 1280 720 16

       timings 0 0 0 0 0 0 0

       accel true

       rgba 5/11,6/5,5/0,0/0

endmode

                                    

After these, I do see the output on my monitor.

But anyone can tell me, if I tried 

optargs=video=HDMI-A-1:1280x720@60 in uEnv.txt

The result is still no signal?

Thanks

honercek

[Gerald Coley]

The display driver takes over once it is launched. It does not use the uENV.txt parameters. It uses the EDID.

Gerald

[tomas.e...@gmail.com]

Could be this the reason why I can have a perfectly working non-accelerated-android working on my BBB (followed http://icculus.org/~hendersa/android/, with Robert Nelson's 3.8 kernel), while follwing these instructions http://processors.wiki.ti.com/index.php/TI-Android-JB-4.2.2-DevKit-4.1.1_DeveloperGuide I get a "Video format not supported" on my TV?

I've tried changing uEnv.txt, changing the resolution to a very standard one, and it looked like it was ignored.... Is there any way to workaround this?

optargs=video=HDMI-A-1:640x480@60

I'd like to see TI's demo on my tv... even if it's with the old kernel   :)

[Gerald Coley]

As I understand it, the SDK from TI has no support for the HDMI display. But, I would ask them and see what they say.

Gerald

[Tomas Espeleta]

Yeah.. it's a bit confusing: their page actually makes you think they do have support for it. I'll ask.

Thank you very much Gerald!

You received this message because you are subscribed to a topic in the Google Groups "BeagleBoard" group.
To unsubscribe from this topic, visit https://groups.google.com/d/topic/beagleboard/0fMTXLPuGS4/unsubscribe.
To unsubscribe from this group and all its topics, send an email to beagleboard...@googlegroups.com.

[Gerald Coley]

It does not. It was too complicated for them to do as I understand it. I think the EDID was a little overwhelming.

Gerald

[Chien-Yu Chen]

I've updated BBB using the newest firmware, BBB-eMMC-flasher-2013.09.15.img.

Still have the same problem.

[Gerald Coley]

OK. I would look at the cable. We have had several instances of people with bad HDMI cables.

Gerald

[glenn...@gmail.com]

Gerald,

I am having the same problems as described above.

The one difference I appear to be getting is that during the initial boot, I get the BeagleBone logo appear in the top left of the screen. This also changes size depending on what resolution I set in uEnv.txt

After this image disappears and a little more time has passed, I get "No Signal" on my 32" TV or "Power Saving Mode HDMI" on my LG Flatron L246WH 24" Monitor.

This suggests to me that the HDMI setup is working but something breaks it during the boot process.

[Gerald Coley]

Then your cable and board is fine. Make sure you have the latest SW.

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

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

Gerald

[aeh...@gmail.com]

Hi Gerald! I have the same problem as the people on here. Did an MMC reflash to latest software and thought maybe it is a faulty HDMI cable. I have since received a dragon board with the same micro hdmi connector as the beaglebone. Dragonboard HDMI works fine, BeagleBone does not. 

Any ideas?

Thanks, Alex

[Gerald Coley]

I assume you followed all the instructions on the Wiki, so I guess the board is bad. I would to an RMA request.

Gerald

--

[Upol Ryskulova]

Hello Gerald,

I faced with the same problem as Glenn

"I appear to be getting is that during the initial boot, I get the BeagleBone logo appear in the top left of the screen. This also changes size depending on what resolution I set in uEnv.txt .After this image disappears and a little more time has passed, I get "No Signal" on my 32" TV or "Power Saving Mode HDMI" on my LG Flatron L246WH 24" Monitor."  said above. Except I have different LCD Screen. My 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:ff

# Block type: 2:0 3:fc

Identifier "Philips 226V4"

VendorName "PHL"

ModelName "Philips 226V4"

# Block type: 2:0 3:ff

# Block type: 2:0 3:fc

# Block type: 2:0 3:fd

HorizSync 30-83

VertRefresh 56-76

# Max dot clock (video bandwidth) 170 MHz

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

Mode "1920x1080" # vfreq 60.000Hz, hfreq 67.500kHz

DotClock 148.500000

HTimings 1920 2008 2052 2200

VTimings 1080 1084 1089 1125

Flags "+HSync" "+VSync"

EndMode

# Block type: 2:0 3:ff

# Block type: 2:0 3:fc

# Block type: 2:0 3:fd

EndSection

I did try to give defaul screen resolution in uEnv.txt as Glenn said. But it is just changing the size of the debian logo for 2-3 seconds and then screen turning to black again. I upgraded to linux 3.8.13-bone70 today from linux 3.8.13-bone41 just downloaded it ran ./install-me.sh then rebooted. I am working with two beaglebone black boards right now. One is perfectly running with lcd screen and hdmi cable without any modification to uEnv.xt file or something else. Both BBB boards have same kernel and os versions. I appreciate all your advice and help.

Upol 

29 Aralık 2013 Pazar 22:28:57 UTC+2 tarihinde Gerald yazdı:

[Gerald Coley]

So you have one board that works and another that does not work with the same exact software?

Gerald

For more options, visit https://groups.google.com/d/optout.

--

Gerald

 

ger...@beagleboard.org

http://beagleboard.org/

http://circuitco.com/support/

[Robert Nelson]

On Mar 14, 2015 11:43 AM, "Upol Ryskulova" <upo...@gmail.com> wrote:
>
> Hello Gerald,
> I faced with the same problem as Glenn
> "I appear to be getting is that during the initial boot, I get the BeagleBone logo appear in the top left of the screen. This also changes size depending on what resolution I set in uEnv.txt .After this image disappears and a little more time has passed, I get "No Signal" on my 32" TV or "Power Saving Mode HDMI" on my LG Flatron L246WH 24" Monitor."  said above. Except I have different LCD Screen. My 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:ff
>> # Block type: 2:0 3:fc
>> Identifier "Philips 226V4"
>> VendorName "PHL"
>> ModelName "Philips 226V4"
>> # Block type: 2:0 3:ff
>> # Block type: 2:0 3:fc
>> # Block type: 2:0 3:fd
>> HorizSync 30-83
>> VertRefresh 56-76
>> # Max dot clock (video bandwidth) 170 MHz
>> # DPMS capabilities: Active off:yes  Suspend:no  Standby:no
>>
>> Mode "1920x1080" # vfreq 60.000Hz, hfreq 67.500kHz
>> DotClock 148.500000
>> HTimings 1920 2008 2052 2200
>> VTimings 1080 1084 1089 1125

1080p @ 60hz!!

http://elinux.org/Beagleboard:BeagleBoneBlack_HDMI

Yes one if those older kernels sorta worked, but HDMI audio was toast.  The source for bone41/70 is available.. As you have the hardware, only you can test the changes.

> For more options, visit https://groups.google.com/d/optout.

[Robert Nelson]

On Mar 14, 2015 11:43 AM, "Upol Ryskulova" <upo...@gmail.com> wrote:
>

Are they 'exactly' the same versions? Including the u-boot version?

I still think it's lucky one even works at full 1080p...

>
> Upol 
>
>
>
> 29 Aralık 2013 Pazar 22:28:57 UTC+2 tarihinde Gerald yazdı:
>>
>> I assume you followed all the instructions on the Wiki, so I guess the board is bad. I would to an RMA request.
>>
>> Gerald
>>
>>
>>
>> On Sat, Dec 28, 2013 at 10:57 AM, <aeh...@gmail.com> wrote:
>>>
>>> Hi Gerald! I have the same problem as the people on here. Did an MMC reflash to latest software and thought maybe it is a faulty HDMI cable. I have since received a dragon board with the same micro hdmi connector as the beaglebone. Dragonboard HDMI works fine, BeagleBone does not. 
>>> Any ideas?
>>> Thanks, Alex
>>>
>>>
>>> On Tuesday, May 7, 2013 7:06:19 AM UTC-7, ghalf...@googlemail.com wrote:
>>>>
>>>> I've just received a BeagleBone Black, but I can't get the HDMI output to work for love nor money. I'm using a known-good micro-HDMI to HDMI adapter, and I've tried connecting it to a 1280x1024 monitor via a HDMI to DVI-D cable and to a 1080p TV using a straight HDMI cable. The TV knows there's something there (it disables inputs that are inactive, and it allows me to select the HDMI input to which the BeagleBone is connected) but says "No Signal," whereas the monitor just says "No Signal."
>>>>
>>>> I've tried both the preinstalled Angstrom Linux and the console version of Ubuntu 13.04 - no dice with either. I've got a proper micro-HDMI to HDMI cable arriving tomorrow, just in case there's something the BeagleBone Black doesn't like about the adapter I'm using (although I tested it on a Nokia 808 PureView, and it worked fine.)
>>>>
>>>> Anybody any ideas what might be preventing the BeagleBone Black from bringing up a display? I can see nothing in the kernel logs that sheds any light on the matter. It sees the virtual HDMI cape in Slot 6 and appears to load the firmware cape-boneblack-hdmi-00A0.dtbo fine.
>>>
>>> --
>>> For more options, visit http://beagleboard.org/discuss
>>> ---
>>> You received this message because you are subscribed to the Google Groups "BeagleBoard" group.
>>> To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard...@googlegroups.com.
>>> For more options, visit https://groups.google.com/groups/opt_out.
>>
>>
> --
> For more options, visit http://beagleboard.org/discuss
> ---
> You received this message because you are subscribed to the Google Groups "BeagleBoard" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard...@googlegroups.com.

> For more options, visit https://groups.google.com/d/optout.

[Upol Ryskulova]

Hello Gerald & Robert,

Actually I am working with three BBB boards, two of them are ok with LCD display I am using. They all have preinstalled linux 3.8.13-bone70. I had checked the link you send me Robert. (I guess it is really exceptional case that BBBs displaying on 1080@60 lcd screen). On one BBB that I had a problem I reinstalled linux 3.8.13-bone41 accidentally, and after upgraded to bone70. Before intallation bone41 it did not even display anything on LCD, but after upgrade to bone70 at least it is displayin debian logo for 2-3 seconds. I am not sure whether they have same u-boot version. Is it ok if I update you tommorow?

[Upol Ryskulova]

Hello Robert,

I have checked my u-boot version. On working two BBB boards u-boot version is U-Boot 2014.04-00015-gb4422bd. On problematic BBB board it is U-Boot 2013.10-00016-ga0e6bc6.

Do I need to upgrade my u-boot to the 2014.04-00015 version?

Thank you in advance.

Regards,

Upol

[Robert Nelson]

On Mon, Mar 16, 2015 at 4:52 AM, Upol Ryskulova <upo...@gmail.com> wrote:
> Hello Robert,
> I have checked my u-boot version. On working two BBB boards u-boot version
> is U-Boot 2014.04-00015-gb4422bd. On problematic BBB board it is U-Boot
> 2013.10-00016-ga0e6bc6.
> Do I need to upgrade my u-boot to the 2014.04-00015 version?

Well, "if" that's truly the "only" difference.....


Regards,

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

[Upol Ryskulova]

I reinstalled preinstalled image to BBB (debian) . Now it is displaying on LCD screen with 1080@60.

Thank you.

[achu...@gmail.com]

Hello,

I am using Beagle bone Black Rev C with 7.11 image and I have connected the device to LCD monitor using micro HDMI to HDMI cable. Before it was working fine but suddenly it started showing blank screen.

I tried various steps:

1) reflashed the device 

2) parse-edid edid to check about monitor 

3) did xrandr --verbose with 1024x720@60 as well as 50 rate and changed the same in /boot/uEnv.txt

4) saw about the device connection also in /proc/cmdline also.

Everything was normal as before but it did is showing blank screen.

Please someone help me with this one.

By the way I am using sony Ericson HDMI cable. So, the use of low quality is outdated.

Gerald and Robert I am following this thread for past 2-3 days continously and tried almost all the steps in the comments but no use. Someone help me with this.

Thanks in advance

Regards,

Ashwin

[achu...@gmail.com]

Hello,

I am Ashwin. I am using BeagleBone black with 7.11 wheezy image. Earlier I was using it by connecting to LCD monitor it was working before but suddenly it started to show blank screen.  I have been following this thread since then and I have followed almost all the steps in these comments. 

I have done

1) Reflashed the device

2) checked about the monitor in parse-edid edid it showed correctly 

3) xrandr --verbose to 1024x720@60 as well as 50 rate and set the same in /boot/uEnv.txt also

4) checked the hdmi status in sys/class/graphics/fb0/device/status also it was showing connected also.

Please Gerald/Robert help me with this issue.

Thanks in Advance

Regards,

Ashwin

[achu...@gmail.com]

Hello Gerald,

I am Ashwin. I am using Beaglebone Black with 7.11 wheezy image with LCD monitor. Previously it was working fine.but suddenly it started to show blank screen. I have been following the thread about the HDMI issue in BBB closely and followed almost all the steps suggested by everyone but no use. I am still having the issue. 

I have done checking about the 

1) status of the device connected to hdmi port

2) parse-edid edid

3) changed the screen resolution and frame rate using xrandr as well as in /boot/uEnv,txt 

4) Even reflashed 2 times but no use.

I require your help with this one. Can you suggest me any other solution?

Thanks in Advance,

Regards,

Ashwin

[nehaloha...@gmail.com]

Hello,

I brought New beaglebone black and when I try to interface LCD to beaglebone black using HDMI cable I get 'No signal' on LCD

Mostly first way is to enable video and cape universal in boot/uEnv.txt in sd card for debian9 image

enable_uboot_cape_universal=1 

enable_uboot_overlays_video=1 

I did it again checked and it is already included still I am getting 'No Signal' on LCD 

Next thing I search on websites

https://elinux.org/Beagleboard:BeagleBoneBlack_HDMI

as per their guidance for HDMI, the etc/X11 consist of the xorg.config file, but in my sd card, I didn't see that particular file.Even on Ubuntu in /etc/X11 i see xorg.config.failsafe file instead.

I am unable to find out the reason for getting 'No signal' on LCD.

Is that new BBB requires setting for HDMI?