Do you remember doing a vt switch at some point? The X log says
'setversion 1.4 failed' at some point, meaning it lost drm master for
some reason, maybe the i915 kernel module died
** Changed in: xorg-server (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1208986
Title:
Xorg crashed with SIGSEGV in __mpn_divrem()
Status in “xorg-server” package in Ubuntu:
Incomplete
Bug description:
I don't know what was happened
ProblemType: Crash
DistroRelease: Ubuntu 13.10
Package: xserver-xorg-core 2:1.14.2-0ubuntu3
ProcVersionSignature: Ubuntu 3.10.0-6.17-generic 3.10.3
Uname: Linux 3.10.0-6-generic i686
.tmp.unity.support.test.0:
ApportVersion: 2.12-0ubuntu2
Architecture: i386
CompizPlugins: No value set for
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CrashCounter: 1
Date: Wed Aug 7 00:28:39 2013
DistUpgraded: 2013-07-25 08:18:43,729 DEBUG enabling apt cron job
DistroCodename: saucy
DistroVariant: ubuntu
ExecutablePath: /usr/bin/Xorg
GraphicsCard:
Intel Corporation 2nd Generation Core Processor Family Integrated Graphics
Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device [17aa:397d]
InstallationDate: Installed on 2012-05-31 (431 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386
(20120423.2)
MachineType: LENOVO HuronRiver Platform
MarkForUpload: True
ProcCmdline: /usr/bin/X -core :0 -auth /var/run/lightdm/root/:0 -nolisten tcp
vt7 -novtswitch
ProcEnviron:
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.10.0-6-generic
root=/dev/mapper/vg-root ro quiet splash i915.i915_enable_rc6=1
i915.semaphores=1 pcie_aspm=force vt.handoff=7
SegvAnalysis:
Segfault happened at: 0xb7159597 <__mpn_divrem+7>: call 0xb72565b3
<__x86.get_pc_thunk.bx>
PC (0xb7159597) ok
source "0xb72565b3" (0xb72565b3) ok
destination "(%esp)" (0xbf5ec000) not located in a known VMA region (needed
writable region)!
Stack memory exhausted (SP below stack segment)
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: xorg-server
StacktraceTop:
__mpn_divrem (qp=0xbf5ec120, qextra_limbs=qextra_limbs@entry=0,
np=0xbf5ec150, nsize=3, dp=0xbf5ec0f0, dsize=2) at divrem.c:56
hack_digit () at printf_fp.c:250
___printf_fp (fp=fp@entry=0xbf5ec838, info=info@entry=0xbf5ec3e4,
args=args@entry=0xbf5ec394) at printf_fp.c:943
_IO_vfprintf_internal (s=0xbf5ec838, format=<optimized out>, ap=0xbf5eeec4
"") at vfprintf.c:1654
buffered_vfprintf (s=s@entry=0xb830ddb0, format=format@entry=0xb772c060
"[%10.3f] ", args=args@entry=0xbf5eeebc "\240\032/\335\360\235\364@") at
vfprintf.c:2341
Title: Xorg crashed with SIGSEGV in __mpn_divrem()
UpgradeStatus: Upgraded to saucy on 2013-07-25 (12 days ago)
UserGroups: lp lpadmin
dmi.bios.date: 10/21/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 45CN38WW
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Emerald Lake
dmi.board.vendor: LENOVO
dmi.board.version: FAB1
dmi.chassis.asset.tag: Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: 0.1
dmi.modalias:
dmi:bvnLENOVO:bvr45CN38WW:bd10/21/2011:svnLENOVO:pnHuronRiverPlatform:pvrIdeapadZ570:rvnLENOVO:rnEmeraldLake:rvrFAB1:cvnLENOVO:ct10:cvr0.1:
dmi.product.name: HuronRiver Platform
dmi.product.version: Ideapad Z570
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.9~daily13.04.18.1~13.04-0ubuntu2
version.libdrm2: libdrm2 2.4.46-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.4-0ubuntu5
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.4-0ubuntu5
version.xserver-xorg-core: xserver-xorg-core 2:1.14.2-0ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2.1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.9-0ubuntu3
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:1.0.8-0ubuntu1.1
xserver.bootTime: Wed Aug 7 00:29:39 2013
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.14.2-0ubuntu3
xserver.video_driver: intel
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