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Jesus Rincon
Oct 15, 2014, 3:52:11 PM10/15/14
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I have my BBB since a while ago, and constantly face a problem with HDMI. After it has its debian installed everything works fine, desktop shows fine and so on. But after a couple of days, usually, when I connect it to my screen nothing happens. Only show linux penguin and after that a blinking cursor. The only solution I've had found for this is flashing the board again and again. I'm tired of this process and afraid that somehow one of this days something will break from this. Is there any posible solution for this? A solution that doesn't involve flashing the board everytime this happens? However, SSH is always available and works fine
Regards
Robert Nelson
Oct 15, 2014, 3:57:34 PM10/15/14
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Jesus Rincon
Oct 15, 2014, 4:00:42 PM10/15/14
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Well via SSH nothing weird shows, but in the screen you can usually see some commands and things but only shows linux logo and a blinking cursor. Besides, you can't write anything and just stands there, doing nothing. Once is flashed again, suddenly everything gets back to normal.
Regards
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Robert Nelson
Oct 15, 2014, 4:06:18 PM10/15/14
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On Wed, Oct 15, 2014 at 3:00 PM, Jesus Rincon <jesu...@gmail.com> wrote:
> Well via SSH nothing weird shows, but in the screen you can usually see some
> commands and things but only shows linux logo and a blinking cursor.
> Besides, you can't write anything and just stands there, doing nothing. Once
> is flashed again, suddenly everything gets back to normal.
Well next time grab the serial log..
> Well via SSH nothing weird shows, but in the screen you can usually see some
> commands and things but only shows linux logo and a blinking cursor.
> Besides, you can't write anything and just stands there, doing nothing. Once
> is flashed again, suddenly everything gets back to normal.
Jesus Rincon
Oct 15, 2014, 5:58:31 PM10/15/14
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As I said, no log appears on HDMI when it's damaged. Only the penguin. On SSH works perfectly fine and doesn't show anything different.
I've seen this happens when I left my board 2 or more days without any ussage, in a box. Could it be possible that this affects its normal functioning?
Regards
Robert Nelson
Oct 15, 2014, 6:13:56 PM10/15/14
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On Wed, Oct 15, 2014 at 4:58 PM, Jesus Rincon <jesu...@gmail.com> wrote:
> As I said, no log appears on HDMI when it's damaged. Only the penguin. On
> SSH works perfectly fine and doesn't show anything different.
>
> I've seen this happens when I left my board 2 or more days without any
> ussage, in a box. Could it be possible that this affects its normal
> functioning?
Maybe 3rd time the charm...
> As I said, no log appears on HDMI when it's damaged. Only the penguin. On
> SSH works perfectly fine and doesn't show anything different.
>
> I've seen this happens when I left my board 2 or more days without any
> ussage, in a box. Could it be possible that this affects its normal
> functioning?
debug information normally gets dumped to serial..
Next time it "happens" please provide the output dumped over the debug
serial port....
Jesus Rincon
Oct 16, 2014, 9:32:37 AM10/16/14
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Somehow I find out this happens when I install matplotlib in my beaglebone. Is this related? Could it be possible that this library makes conflict with the start up?
How do I get the serial port debug information? I though I can't connect my beagle bone to my computer when HDMI is activated
Regards
Robert Nelson
Oct 16, 2014, 9:42:49 AM10/16/14
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On Thu, Oct 16, 2014 at 8:32 AM, Jesus Rincon <jesu...@gmail.com> wrote:
> Somehow I find out this happens when I install matplotlib in my beaglebone.
> Is this related? Could it be possible that this library makes conflict with
> the start up?
Umm, wheezy has around 36,000 packages available in the repo.
> Somehow I find out this happens when I install matplotlib in my beaglebone.
> Is this related? Could it be possible that this library makes conflict with
> the start up?
> How do I get the serial port debug information?
https://github.com/CircuitCo/BeagleBone-Black/blob/master/BBB_SRM.pdf?raw=true
> I though I can't connect my
> beagle bone to my computer when HDMI is activated
Jesus Rincon
Oct 16, 2014, 10:09:21 AM10/16/14
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I don't know, as soon as I install it this happens. Besides I'm using LXDE because I had also a problem with Wheezy and PyQt library. Thankfully I have a USB TTL and I'll try to figure this out. This is really weird, I supossed that if debian has this repositories should be ilogical that they are conflicting with the start up
I'll try to conect this to serial
Regards
Jesus Rincon
Oct 16, 2014, 11:18:41 AM10/16/14
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Finally figured it out how to do this. Here is the information dumped on serial
Being honest, I don't get a single word on this, I'm very very new to linux, but I can see something like BB-BONELT-HDMIN conflict, maybe it isn't what I'm thinking
Regards
Curt Carpenter
Oct 16, 2014, 11:41:12 AM10/16/14
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Forgive me if this is a waste of your time Jesus, but do you remove your SD card containing the Debian image from your Beaglebone once you've flashed it, and replace it with a clean SD?
Jesus Rincon
Oct 16, 2014, 11:44:11 AM10/16/14
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Don't worry Curt, I don't have even a SD Card on it now. I'm only connecting HDMI and a usb hub with keyboard and mouse. Also I disconnected ethernet to avoid any other trouble
Regards
2014-10-16 10:41 GMT-05:00 Curt Carpenter <1cjcar...@att.net>:
Forgive me if this is a waste of your time Jesus, but do you remove your SD card containing the Debian image from your Beaglebone once you've flashed it, and replace it with a clean SD?
Jesus Rincon
Oct 16, 2014, 12:36:40 PM10/16/14
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Mr Nelson I'm sorry but seems to be that matplotlib from python repo, is in conflict. As soon as I uninstalled it suddenly HDMI got back and started to work fine. Is there any solution for this conflict. I really need this library for plotting some data I got.
Regards
Robert Nelson
Oct 16, 2014, 12:45:13 PM10/16/14
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On Thu, Oct 16, 2014 at 11:36 AM, Jesus Rincon <jesu...@gmail.com> wrote:
> Mr Nelson I'm sorry but seems to be that matplotlib from python repo, is in
> conflict. As soon as I uninstalled it suddenly HDMI got back and started to
> work fine. Is there any solution for this conflict. I really need this
> library for plotting some data I got.
Contact the maintainer of matplotlib.
> Mr Nelson I'm sorry but seems to be that matplotlib from python repo, is in
> conflict. As soon as I uninstalled it suddenly HDMI got back and started to
> work fine. Is there any solution for this conflict. I really need this
> library for plotting some data I got.
Jesus Rincon
Oct 20, 2014, 12:44:45 PM10/20/14
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I'm here again, so I don't have to make another post. I've seen some examples of people working with pyqtgraph on beaglebone black, so I decided to install it and work with this. But again, I've got the same problem again. If I remove this library, everything goes back to normality. Any ideas or help? Has anyone worked with a graphics library for PyQt4 on Beaglebone black?
Regards
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