Created attachment 19350 [details]
xorg log file
When using intel accelerated driver with Congatec conga-B945 board video sometimes dissapear. Everything seems to be running normal (ps, top), but there is only black empty screen. I can change to console (Ctrl+Atl+F1) and there everything is working fine. When returning to X there is still no screen. Restarting X has no effect. Only restart of whole machine helps.
Unfortunately there is not too much logs and they don't tell me anything.
Is this possible to some hardware problem (for ex. with Video BIOS - vesa driver is not working at all) or only driver problem?
Created attachment 19351 [details]
another xorg log file
Do you have a reliable way to reproduce it?
2.3.2 driver is a bit old. Could you try the latest driver (on xf86-video-intel master branch or xf86-video-intel-2.5-branch)?
I was using intel driver from Debian Lenny...
I will try newer driver now.
Main problem is that this issue is hard to reproduce...
And even if it happens there is not so much info in logs...
In logs there is warning that V_BIOS checksum is wrong. Can this be related with other problems?
The V_BIOS checksum warning should not be related.
could you describe more about the "sometime"? e.g. when you run any 3D app, or when you leave the machine idle for a while, or even when you are working on it( browsing internet, using office suite, etc... )
and, how is the latest status, after you use the "newer" driver?
The machine was showing two video streams from mplayer under Gnome Metacity WM. Without any 3D, compiz etc. Nothing more.
Unfortunately, I'm unable to reproduce it on demand...
With 'newer' driver (now I'm testing it with Ubuntu 8.10 - intel driver 2.4.1) it is working fine for now.
I can easily reproduct this bug on my machine (MSI Wind with Ubuntu 8.10).
$ lspci |grep Graphic
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GME Express Integrated Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)
All I have to do is connect my external display (LCD 1440x900, but I guess it's not important here) and turn off internal LVDS display:
(I'm starting X with LCD connected, because otherwise I can't get native resolution on my external LCD)
$ xrandr -q
Screen 0: minimum 320 x 200, current 1440 x 900, maximum 1600 x 1600
VGA connected 1440x900+0+0 (normal left inverted right x axis y axis) 408mm x 255mm
1440x900 59.9*+ 75.0 59.9*
1280x1024 75.0 60.0 60.0
1280x960 60.0 60.0
1152x864 75.0 75.0 75.0 70.0 60.0
1024x768 75.1 75.0 70.1 60.0 60.0
800x600 72.2 75.0 60.3 56.2
640x480 75.0 72.8 75.0 60.0 59.9
LVDS connected 1024x600+0+0 (normal left inverted right x axis y axis) 220mm x 129mm
1024x600 60.0*+ 65.0
$ xrandr --output LVDS --off
And after a while (for now max. 1 or 2 hours) all I see on my external LCD is one solid color (usually black, which looks like blank screen, but sometimes white and even other color) on whole screen. Messing with xrandr/restarting X doesn't help. Only restart bring back to life my external display.
In my /var/log/Xorg.0.log I see lots (hundreds or even thousands) of underrun on pipe A messages:
$ cat /var/log/Xorg.0.log | grep -e '(EE) intel(0): underrun on pipe A!'|wc -l
This bug drives me absolutety crazy, because it forces me to have my netbook LVDS constantly on, when I just want to use only my external display.
$ dpkg-query -l|grep video-intel
ii xserver-xorg-video-intel 2:2.4.1-1ubuntu10.1
Well, this problem dissapeared for me, after I've added
Option "FramebufferCompression" "false"
to "Device" section in my /etc/X11/xorg.conf. So it looks like this is Framebuffer compression fault.
Marcin, your issue is probably different. Please file a separate bug according to http://intellinuxgraphics.org/how_to_report_bug.html, so we'll have another developer to follow your issue, which seems easier to reproduce with this one. Thanks!
For this one, if it doesn't appear now with Karol with Ubuntu 8.10, it can be closed.
(In reply to comment #6)
> The machine was showing two video streams from mplayer under Gnome Metacity WM.
> Without any 3D, compiz etc. Nothing more.
> Unfortunately, I'm unable to reproduce it on demand...
> With 'newer' driver (now I'm testing it with Ubuntu 8.10 - intel driver 2.4.1)
> it is working fine for now.
I'll mark this bug as fixed for now. thanks!