Although this patch makes the situation much better, it looks like a similar bug is present elsewhere. Using git commit On git rev 3cb14dcccf5574366d90e24f351e3ad04b35e35f, I see an occasional crash after several days of using a laptop with ~10 suspensions per day.
The following diagnostic messages and backtrace appears three times in the Xorg log before Xorg quits: [121305.099] BUG: triggered 'if (priv->num_active_touches > priv->num_slots)' [121305.099] BUG: synaptics.c:2615 in UpdateTouchState() [121305.099] [121305.099] Backtrace: [121305.384] 0: /usr/bin/X (xorg_backtrace+0x36) [0x560366] [121305.384] 1: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7ff504292000+0x2c47) [0x7ff504294c47] [121305.384] 2: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7ff504292000+0x4cdb) [0x7ff504296cdb] [121305.384] 3: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7ff504292000+0x6744) [0x7ff504298744] [121305.384] 4: /usr/bin/X (0x400000+0x6efd7) [0x46efd7] [121305.384] 5: /usr/bin/X (0x400000+0x93370) [0x493370] [121305.384] 6: /usr/lib/libpthread.so.0 (0x7ff508a94000+0xf170) [0x7ff508aa3170] [121305.384] 7: /usr/bin/X (0x400000+0x164540) [0x564540] [121305.384] 8: /usr/lib/libpthread.so.0 (0x7ff508a94000+0xf170) [0x7ff508aa3170] [121305.384] 9: /usr/lib/libc.so.6 (0x7ff50791f000+0x7ba57) [0x7ff50799aa57] [121305.384] 10: /usr/lib/libc.so.6 (__libc_malloc+0x70) [0x7ff50799be50] [121305.389] 11: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7ff505a6b000+0x3fa6d) [0x7ff505aaaa6d] [121305.389] 12: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7ff505a6b000+0x4b7b8) [0x7ff505ab67b8] [121305.389] 13: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7ff505a6b000+0x4d09b) [0x7ff505ab809b] [121305.389] 14: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7ff505a6b000+0x80d9b) [0x7ff505aebd9b] [121305.389] 15: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7ff505a6b000+0x813b3) [0x7ff505aec3b3] [121305.389] 16: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7ff505a6b000+0x88466) [0x7ff505af3466] [121305.390] 17: /usr/bin/X (0x400000+0xebc5b) [0x4ebc5b] [121305.390] 18: /usr/bin/X (0x400000+0x34531) [0x434531] [121305.390] 19: /usr/bin/X (0x400000+0x23615) [0x423615] [121305.390] 20: /usr/lib/libc.so.6 (__libc_start_main+0xf5) [0x7ff507940725] [121305.390] 21: /usr/bin/X (0x400000+0x238ed) [0x4238ed] -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-input-synaptics in Ubuntu. https://bugs.launchpad.net/bugs/956071 Title: Xorg crashed with SIGSEGV in XIGetDeviceProperty() Status in OEM Priority Project: Fix Released Status in OEM Priority Project precise series: Fix Released Status in X.Org X server: Confirmed Status in “xserver-xorg-input-synaptics” package in Ubuntu: Fix Released Status in “xserver-xorg-input-synaptics” source package in Precise: Fix Released Status in “xorg-server” package in Debian: Fix Released Bug description: [Impact] Causes crashes in the xserver usually on resume from suspend. [Test Case] - Put one or more fingers to the touchpad - Send the computer to standby, or disable the pad using 'xinput disable' with the finger(s) still on the pad - Remove the fingers - Resume the computer or enable the touchpad again using 'xinput enable' - Touch the pad again [Regression Potential] none, the patch resets a counter on device reset that should be zero at that point -- Crash on resume in xserver-xorg-input-synaptics. Version 1.5.99.902-0ubuntu5 works, the workaround is to downgrade to that version. It appears to hit many newer laptops causing data loss. Original description Happens quite often, but I can't find a pattern to when it happens. Might be related to either firefox or Minecraft (openjdk-6) but I am not certain. #10 <signal handler called> No symbol table info available. #11 XIGetDeviceProperty (dev=0xb9238788, property=277, value=0xbffa7cdc) at ../../Xi/xiproperty.c:852 handler = <optimized out> prop = 0xb923c8d8 rc = <optimized out> #12 0xb7667797 in get_property (dev=<optimized out>, property=277, type=19, offset=0, length=1, bytes_after=0xbffa7d84, type_return=0xbffa7d8c, format=0xbffa7d7c, nitems=0xbffa7d80, length_return=0xbffa7d78, data=0xbffa7d88, delete=<optimized out>, client=<optimized out>) at ../../Xi/xiproperty.c:290 n = <optimized out> len = <optimized out> ind = <optimized out> rc = <optimized out> prop = <optimized out> prop_value = <optimized out> ProblemType: Crash DistroRelease: Ubuntu 12.04 Package: xserver-xorg-core 2:1.11.4-0ubuntu6 ProcVersionSignature: Ubuntu 3.2.0-18.29-generic-pae 3.2.9 Uname: Linux 3.2.0-18-generic-pae i686 .tmp.unity.support.test.0: ApportVersion: 1.94.1-0ubuntu2 Architecture: i386 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz Date: Thu Mar 15 08:30:43 2012 DistUpgraded: Fresh install DistroCodename: precise DistroVariant: ubuntu ExecutablePath: /usr/bin/Xorg ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu GraphicsCard: Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:21c5] InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20120304) MachineType: LENOVO 02173BG ProcCmdline: /usr/bin/X :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch -background none ProcEnviron: ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-18-generic-pae root=UUID=f58bc641-2db1-4b1d-a839-3b04dc4e9ee2 ro quiet splash vt.handoff=7 SegvAnalysis: Segfault happened at: 0xb7667528 <XIChangeDeviceProperty+440>: mov 0x8(%esi),%eax PC (0xb7667528) ok source "0x8(%esi)" (0x00000009) not located in a known VMA region (needed readable region)! destination "%eax" ok SegvReason: reading NULL VMA Signal: 11 SourcePackage: xorg-server StacktraceTop: XIGetDeviceProperty () ?? () ?? () ?? () ?? () Title: Xorg crashed with SIGSEGV in XIGetDeviceProperty() UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: dmi.bios.date: 01/03/2011 dmi.bios.vendor: LENOVO dmi.bios.version: 84ET23WW (1.07 ) dmi.board.name: 02173BG 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:bvr84ET23WW(1.07):bd01/03/2011:svnLENOVO:pn02173BG:pvrThinkPadEdge:rvnLENOVO:rn02173BG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 02173BG dmi.product.version: ThinkPad Edge dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.7.0+bzr3035-0ubuntu1 version.libdrm2: libdrm2 2.4.30-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.1-0ubuntu4 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.1-0ubuntu4 version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu6 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.99.901+git20120126-0ubuntu2 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 To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/956071/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
