[i965gm] Xserver crash when hitting certain keys while scroll lock is activated

[reini]

Binary package hint: xserver-xorg-video-intel

After I upgraded from Karmic to Lucid yesterday, my X server started crashing every couple of minutes. Especially chatting in Skype (instant messaging, not video) seems to trigger this crash. See Xorg.log.0.old.

Not sure whether this is related but my scroll lock LED goes on and off erratically and the X server is started on tty1 instead of 7 unless "restart kdm" is run.

Backtrace:
0: /usr/bin/X (xorg_backtrace+0x3b) [0x80e937b]
1: /usr/bin/X (0x8048000+0x61c7d) [0x80a9c7d]
2: (vdso) (__kernel_rt_sigreturn+0x0) [0x183410]
3: /usr/bin/X (0x8048000+0x36c1d) [0x807ec1d]
4: /usr/bin/X (0x8048000+0x3707a) [0x807f07a]
5: /usr/bin/X (0x8048000+0xe0257) [0x8128257]
6: /usr/bin/X (XkbHandleActions+0x1cb) [0x8153a3b]
7: /usr/bin/X (XkbProcessKeyboardEvent+0x80) [0x81540a0]
8: /usr/bin/X (AccessXFilterPressEvent+0x2b7) [0x814c437]
9: /usr/bin/X (0x8048000+0x10c3e4) [0x81543e4]
10: /usr/bin/X (mieqProcessDeviceEvent+0x1e4) [0x80e8744]
11: /usr/bin/X (mieqProcessInputEvents+0x6c) [0x80e87dc]
12: /usr/bin/X (ProcessInputEvents+0x17) [0x80b57e7]
13: /usr/bin/X (0x8048000+0x2a3a0) [0x80723a0]
14: /usr/bin/X (0x8048000+0x1ed7a) [0x8066d7a]
15: /lib/tls/i686/cmov/libc.so.6 (__libc_start_main+0xe6) [0x1e2bd6]
16: /usr/bin/X (0x8048000+0x1e961) [0x8066961]

Caught signal 3 (Quit). Server aborting

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xserver-xorg-video-intel 2:2.9.1-3ubuntu5
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic i686
Architecture: i386
Date: Tue May 4 12:57:16 2010
EcryptfsInUse: Yes
GdmLog: Error: command ['kdesudo', '--', 'cat', '/var/log/gdm/:0.log'] failed with exit code 1: cat: /var/log/gdm/:0.log: No such file or directory
GdmLog1: Error: command ['kdesudo', '--', 'cat', '/var/log/gdm/:0.log.1'] failed with exit code 1: cat: /var/log/gdm/:0.log.1: No such file or directory
GdmLog2: Error: command ['kdesudo', '--', 'cat', '/var/log/gdm/:0.log.2'] failed with exit code 1: cat: /var/log/gdm/:0.log.2: No such file or directory
MachineType: Dell Inc. Inspiron 1525
ProcCmdLine: root=UUID=b6660c11-9412-49f9-98ea-a18c63d589ae ro vga=0x361 console=tty1 default_utf8=1 resume=/dev/sda5
ProcEnviron:
 LANGUAGE=
 PATH=(custom, user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: xserver-xorg-video-intel
dmi.bios.date: 10/16/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A16
dmi.board.name: 0U990C
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA16:bd10/16/2008:svnDellInc.:pnInspiron1525:pvr:rvnDellInc.:rn0U990C:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Inspiron 1525
dmi.sys.vendor: Dell Inc.
glxinfo: Error: [Errno 2] No such file or directory
system:
 distro: Ubuntu
 codename: lucid
 architecture: i686
 kernel: 2.6.32-22-generic

[lspci]
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller [8086:2a02] (rev 0c)
     Subsystem: Dell Device [1028:022f]

[reini (rrumberger)]

One more thing I noticed: these crashes seem to mostly occur when I the Enter key.

[reini (rrumberger)]

After a day of almost no enter key usage, I haven't had a single crash. As soon as I actually had to use the Enter key again, the next crash occured. I also noticed that using either the enter key or pressing Shif+2 (to geht ") while scroll lock had turned itself on reliably resulted in the crash.

[reini (rrumberger)]

I have tried several things to work around this problem by now:

 * adding nomodeset to the kernel parameters in grub
 * using the vesa driver instead of the intel driver
 * removing xorg.conf altogether
 * turning off DRI
 * disabling scim
 * using a different user account

None of these made a difference - X still crashes whenever the Enter
key is hit while scroll lock is behaving erratically.

I also tried installing a fresh version of Kubuntu (Lucid, 64bit
version this time) to an external harddrive and it did not exhibit
the bug. I will try to apply my current configuration to that install
over the next few days to see if I can find out what triggers the
bug.

[reini (rrumberger)]

I've since noticed that the crash only occurs if I start KDE through KDM. Since I started using startx, I haven't seen a single crash.

[reini (rrumberger)]

After more than two days extensive usage, neiter the toggling scroll lock nor the crashes related to pressing certain keys have occurred in maverick, so this bug seems to be fixed in Kubuntu 10.10.

[reini (rrumberger)]

Spoke too soon - the crash is still here in maverick. The workaround using startx instead of KDM still works, even though that means no standby, suspend to disk or power management functionality from within KDE.

[Bryce Harrington (bryce)]

Please collect a full backtrace on this crash - see http://wiki.ubuntu.com/X/Backtracing for guidance.

[Launchpad Janitor (janitor)]

[Expired for xserver-xorg-video-intel (Ubuntu) because there has been no activity for 60 days.]