[i945] When I have my laptop on battery power and I close and reopen lid X goes into low-res mode

[David Mandala]

Binary package hint: xorg

The laptop suspends and resumes normally this was tested via kernel team script. But if I have power management set to suspend when on battery power and I close the lid, the laptop does not suspend as expected, If I wait for a bit and reopen the lid I get a message that X is in a low-res mode. I have to reboot to fix this.

This bug can be reproduced as it happens every time I do these steps.

Backtrace:
0: /usr/bin/X (xorg_backtrace+0x3b) [0x80e880b]
1: /usr/bin/X (0x8048000+0x61aed) [0x80a9aed]
2: (vdso) (__kernel_rt_sigreturn+0x0) [0x159410]
3: /usr/bin/X (0x8048000+0x2a190) [0x8072190]
4: /usr/bin/X (0x8048000+0x1ed3a) [0x8066d3a]
5: /lib/tls/i686/cmov/libc.so.6 (__libc_start_main+0xe6) [0x542bd6]
6: /usr/bin/X (0x8048000+0x1e921) [0x8066921]

Caught signal 3 (Quit). Server aborting

ProblemType: Bug
Architecture: i386
Date: Wed Mar 10 15:20:07 2010
DistroRelease: Ubuntu 10.04
DkmsStatus: Error: [Errno 2] No such file or directory
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release Candidate i386 (20091019.2)
MachineType: LENOVO 195144U
Package: xorg 1:7.5+3ubuntu1
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-16-generic root=UUID=92376417-6451-498b-839d-96f1776d70f7 ro quiet splash
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, user)
 LANG=en_US.utf8
ProcVersionSignature: Ubuntu 2.6.32-16.25-generic
SourcePackage: xorg
Uname: Linux 2.6.32-16-generic i686
dmi.bios.date: 03/31/2006
dmi.bios.vendor: LENOVO
dmi.bios.version: 79ET58WW (1.04 )
dmi.board.name: 195144U
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr79ET58WW(1.04):bd03/31/2006:svnLENOVO:pn195144U:pvrThinkPadT60:rvnLENOVO:rn195144U:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 195144U
dmi.product.version: ThinkPad T60
dmi.sys.vendor: LENOVO
system:
 distro: Ubuntu
 codename: lucid
 architecture: i686
 kernel: 2.6.32-16-generic

[lspci]
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller [8086:27a2] (rev 03)
     Subsystem: Lenovo Device [17aa:201a]

[Bryce Harrington (bryce)]

There's a backtrace in the X log so looks pretty definitely to be an X crash. However I notice it is terminating on SIGQUIT, which sounds a bit similar to bug #532047 or some permutation thereof. Can you try uninstalling plymouth and seeing if you can reproduce the issue after that?

[David Mandala (davidm)]

Removed plymouth, no change, close laptop lid, unit does not suspend, open laptop lid and X is in low-res mode again. There was some error message on screen but it disappeared with the low-res message appearing.

[David Mandala (davidm)]

Bug #536977 may have additional information about this.

[Chris Halse Rogers (raof)]

The trigger and symptoms seem suspiciously similar to bug #535640, even though there's no GPU lockup set here. That bug may have been exposed by a patch dropped in the .33 drm backport into the 2.6.32-16 kernel - can you reproduce this crash on the 2.6.32-15 kernel or earlier?

[Emmanuel Pacaud (emmanuel-pacaud)]

I think I have the same issue. Suspend/resume using the panel menu works fine, but suspend fails if I close the lid.
 I get mainly a black screen when I reopen the lid, and sometime I get the "low resolution" dialog.

Linux lappc-p087.in2p3.fr 2.6.32-17-generic #26-Ubuntu SMP Fri Mar 19 23:58:53 UTC 2010 i686 GNU/Linux

00:02.1 Display controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 03)
 Subsystem: Dell Device 0182