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
What's shown on the serial port when this happens?
Regards,
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
Well next time grab the serial log..
Regards,
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
Maybe 3rd time the charm...
debug information normally gets dumped to serial..
Next time it "happens" please provide the output dumped over the debug
serial port....
Regards,
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
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.
How do I get the serial port debug information?
Section 7.5:
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
Why would you state that?
Regards,
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
Finally figured it out how to do this. Here is the information dumped on serial
http://pastebin.com/SgQHNyxr
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
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?
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
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
Contact the maintainer of matplotlib.
Regards,
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