[i965] random crash with vertical stripes
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
xserver-xorg-video-intel (Ubuntu) |
Invalid
|
Undecided
|
Unassigned |
Bug Description
Binary package hint: xserver-
I'm having this bug for one year with kubuntu 7.10,8.04 and 8.10 on a Dell latitude D630, with Intel GM965 video card.
Randomly, the system crashes with some kind of vertical stripes (or 'ladders') across the screen.
Keyboard and mouse is not responsive. Even ALT+SYS don't work. I have to hard reboot using the power button.
See screenshot (from hardy).
It can happen when I'm working, but it seems that most of the time it happens when I do nothing.
Sometimes it happens a few seconds after login dialog (like in screenshot).
It is very difficult to debug because it occurs about only once every two weeks.
Is see no timed trace in log files. Only thing that could be related is
(EE) intel(0): underrun on pipe B!
in Xorg.0.log
That's why I put it under xserver-
I use a dual screen setup in xorg.conf (even when I'm not connected to an external monitor), but I think it happened also with a plain setup.
Interestingly it has happen a couple of time when I was listening to music, and after crash I could still hear some distorted sound...
First I thought it was hardware problem, but all tests passed successfully and I even had Dell change the motherboard.
I also ran kubuntu from an external HD, and it crashed again anyway.
So you guys are my last hope :)
[lspci]
00:00.0 Host bridge [0600]: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub [8086:2a00] (rev 0c)
Subsystem: Dell Device [1028:01f9]
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller [8086:2a02] (rev 0c)
Subsystem: Dell Device [1028:01f9]
description: | updated |
Thank you for reporting this bug, and for providing an illustrative screenshot. Could you also upload the following:
- The output of `lspci -vvnn`
- /var/log/Xorg.0.log
- /etc/X11/xorg.conf
You say that the keyboard is not responsive. Does that also mean that CapsLock does not turn on and off the light on the keyboard? If the light is unresponsive, it probably means that the bug is in the kernel. Does anything show up in /var/log/kern.log at the time of a crash?