X server sometimes crashes after sleep

[LGB [Gábor Lénárt]]

If I close the lid of the notebook without external power, it goes into sleep state. However sometimes (but not always!) after resuming, X crashes, I only see everything disappear and lightdm screen can bee seen again, with sigsegv info in kernel message buffer (dmesg) etc. Note that crash is not instant: after resuming usually I work something like half a minute before crash happens.

[ 2793.783728] Xorg[1075]: segfault at 9 ip b7645b28 sp bfa504d0 error 4 in Xorg[b7525000+1f3000]

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xserver-xorg 1:7.6+12ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-27.43-generic-pae 3.2.21
Uname: Linux 3.2.0-27-generic-pae i686
.tmp.unity.support.test.0:

ApportVersion: 2.0.1-0ubuntu11
Architecture: i386
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
Date: Thu Jul 26 07:35:38 2012
DistUpgraded: 2012-03-03 11:33:01,134 DEBUG enabling apt cron job
DistroCodename: precise
DistroVariant: ubuntu
DkmsStatus: virtualbox, 4.1.12, 3.2.0-27-generic-pae, i686: installed
ExtraDebuggingInterest: Yes, even including gdb or git bisection work if needed
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:21dd]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
Lsusb:
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
 Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
 Bus 002 Device 003: ID 04f2:b228 Chicony Electronics Co., Ltd
MachineType: LENOVO 5016NW6
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-27-generic-pae root=UUID=8df578aa-47e3-483f-b694-bf7effd24b7d ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: Upgraded to precise on 2012-03-03 (144 days ago)
dmi.bios.date: 11/04/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 8GET38WW (1.15 )
dmi.board.name: 5016NW6
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:bvr8GET38WW(1.15):bd11/04/2011:svnLENOVO:pn5016NW6:pvrThinkPadL520:rvnLENOVO:rn5016NW6:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 5016NW6
dmi.product.version: ThinkPad L520
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.7.8-0ubuntu1.2
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.3-0ubuntu0.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.3-0ubuntu0.1
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1.2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[LGB [Gábor Lénárt] (lgb)]

Ok, now it happens too frequently, which renders my notebook unusable as I don't dare to suspend it: with more than 50% chance it will cause Xorg to crash after resuming. Eg my current output of dmesg contains these:

[ 2809.064137] Xorg[1137]: segfault at 9 ip b7699b48 sp bfffbc20 error 4 in Xorg[b7579000+1f3000]
[20580.509216] Xorg[10643]: segfault at 9 ip b772cb48 sp bfabc590 error 4 in Xorg[b760c000+1f3000]
[28250.590881] Xorg[14981]: segfault at 9 ip b7693b48 sp bfa98f70 error 4 in Xorg[b7573000+1f3000]

[Mitten Orvan (mitten-o)]

I have the same symptoms; X sefaults often after I return from suspend, ubuntu 12.04.

$ dmesg | grep Xorg | tail -n 1
[45702.480196] Xorg[15066]: segfault at 9 ip 0092db48 sp bff23ef0 error 4 in Xorg[80d000+1f3000]

Extract from Xorg.0.log.old:

[ 44915.171] (II) intel(0): Modeline "1024x600"x0.0 52.00 1024 1048 1184 1344 600 603 604 644 -hsync -vsync (38.7 kHz)
[ 45702.411]
Backtrace:
[ 45702.441] 0: /usr/bin/X (xorg_backtrace+0x37) [0x995627]
[ 45702.441] 1: /usr/bin/X (0x80d000+0x18c3aa) [0x9993aa]
[ 45702.441] 2: (vdso) (__kernel_rt_sigreturn+0x0) [0xd9040c]
[ 45702.442] 3: /usr/bin/X (XIGetDeviceProperty+0x38) [0x92dd08]
[ 45702.442] 4: /usr/bin/X (0x80d000+0x120db7) [0x92ddb7]
[ 45702.442] 5: /usr/bin/X (0x80d000+0x12140f) [0x92e40f]
[ 45702.442] 6: /usr/bin/X (0x80d000+0x116f97) [0x923f97]
[ 45702.442] 7: /usr/bin/X (0x80d000+0x3791d) [0x84491d]
[ 45702.442] 8: /usr/bin/X (0x80d000+0x2535a) [0x83235a]
[ 45702.442] 9: /lib/i386-linux-gnu/libc.so.6 (__libc_start_main+0xf3) [0x2814d3]
[ 45702.442] 10: /usr/bin/X (0x80d000+0x25699) [0x832699]
[ 45702.442] Segmentation fault at address 0xd

This is on an Acer aspire one 532h-2Dr.

[LGB [Gábor Lénárt] (lgb)]

Mitten: interesting, you have different notebook (I have a lenovo thinkpad) but it seems the xorg backtracke is quite similar also the message in dmesg which is exactly having the same +1f3000 as in mine.

Probably it's a general bug affected the users of the same GPU, or so then?

[Mitten Orvan (mitten-o)]

Yes, we both seem to have integrated intel graphics.
I'll try to find my exact hardware:

$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation N10 Family Integrated Graphics Controller

$ cat /var/log/Xorg.0.log | grep Chipset
...
[ 51567.553] (II) intel(0): Integrated Graphics Chipset: Intel(R) Pineview GM
...

So it seems I have an Intel Pineview GM.

[Mitten Orvan (mitten-o)]

Tried installing updated driver from
https://launchpad.net/~ubuntu-x-swat/+archive/x-updates
Didn't fix the problem.
Will try the edgers PPA next.

[Mitten Orvan (mitten-o)]

Edgers didn't help either.
I'll revert to the precise baseline.

[Andrew Oates (andrewoates)]

I'm seeing this problem too, and also have integrated intel graphics. I'm on an Acer Aspire 1410. My backtraces look very similar to yours.

Here's all the data I gathered --- if more would be useful, let me know:

~$ dmesg | grep Xorg | tail -n 1
[ 750.880241] Xorg[1034]: segfault at 9 ip b7633b28 sp bfabd2a0 error 4 in Xorg[b7513000+1f3000]

From /var/log/Xorg.0.log.old:

[ 442.748] (II) intel(0): EDID vendor "AUO", prod id 8284
[ 442.748] (II) intel(0): Printing DDC gathered Modelines:
[ 442.748] (II) intel(0): Modeline "1366x768"x0.0 65.50 1366 1390 1406 1406 768 770 774 776 -hsync -vsync (46.6 kHz)
[ 750.764]
Backtrace:
[ 750.793] 0: /usr/bin/X (xorg_backtrace+0x37) [0xb769b607]
[ 750.793] 1: /usr/bin/X (0xb7513000+0x18c38a) [0xb769f38a]
[ 750.793] 2: (vdso) (__kernel_rt_sigreturn+0x0) [0xb74f040c]
[ 750.793] 3: /usr/bin/X (XIChangeDeviceProperty+0x1b8) [0xb7633b28]
[ 750.793] 4: /usr/bin/X (0xb7513000+0x121188) [0xb7634188]
[ 750.794] 5: /usr/bin/X (0xb7513000+0x116f77) [0xb7629f77]
[ 750.794] 6: /usr/bin/X (0xb7513000+0x3791d) [0xb754a91d]
[ 750.794] 7: /usr/bin/X (0xb7513000+0x2535a) [0xb753835a]
[ 750.794] 8: /lib/i386-linux-gnu/libc.so.6 (__libc_start_main+0xf3) [0xb71794d3]
[ 750.794] 9: /usr/bin/X (0xb7513000+0x25699) [0xb7538699]
[ 750.794] Segmentation fault at address 0x9
[ 750.794]
Caught signal 11 (Segmentation fault). Server aborting
[ 750.794]

~$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)

~$ cat /var/log/Xorg.0.log | grep Chipset
[ 756.196] (II) intel: Driver for Intel Integrated Graphics Chipsets: i810,
[ 756.202] (II) intel(0): Integrated Graphics Chipset: Intel(R) GM45
[ 756.202] (--) intel(0): Chipset: "GM45"