Anshul Jain, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com /daily-live/current/ .
If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report: apport-collect -p xorg-server REPLACE-WITH-BUG-NUMBER Please note, given that the information from the prior release is already available, doing this on a release prior to the development one would not be helpful. Thank you for your understanding. Helpful bug reporting tips: https://wiki.ubuntu.com/ReportingBugs ** This bug is no longer a duplicate of bug 945918 Xorg crashed with SIGSEGV in WriteToClient() with buf="\021" ** Changed in: xorg-server (Ubuntu) Importance: High => Low ** Changed in: xorg-server (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/948858 Title: Xorg crashed with SIGSEGV in WriteToClient() from CloseDownClient() Status in “xorg-server” package in Ubuntu: Incomplete Bug description: Unity crashed when moving the cursor to the top left corner => 0x7ff1bbc9bb01: movdqu %xmm0,-0x20(%rdi) 0x7ff1bbc9bb06: lddqu -0x10(%rsi),%xmm0 0x7ff1bbc9bb0b: movdqu %xmm0,-0x10(%rdi) 0x7ff1bbc9bb10: retq 0x7ff1bbc9bb11: data32 data32 data32 data32 data32 nopw %cs:0x0(%rax,%rax,1) 0x7ff1bbc9bb20: lddqu -0x8f(%rsi),%xmm0 0x7ff1bbc9bb28: movdqu %xmm0,-0x8f(%rdi) 0x7ff1bbc9bb30: lddqu -0x7f(%rsi),%xmm0 0x7ff1bbc9bb35: movdqu %xmm0,-0x7f(%rdi) 0x7ff1bbc9bb3a: lddqu -0x6f(%rsi),%xmm0 0x7ff1bbc9bb3f: movdqu %xmm0,-0x6f(%rdi) 0x7ff1bbc9bb44: lddqu -0x5f(%rsi),%xmm0 0x7ff1bbc9bb49: movdqu %xmm0,-0x5f(%rdi) 0x7ff1bbc9bb4e: lddqu -0x4f(%rsi),%xmm0 0x7ff1bbc9bb53: movdqu %xmm0,-0x4f(%rdi) 0x7ff1bbc9bb58: lddqu -0x3f(%rsi),%xmm0 #18 <signal handler called> No symbol table info available. #19 __memmove_ssse3_back () at ../sysdeps/x86_64/multiarch/memcpy-ssse3-back.S:1703 No locals. #20 0x00007ff1bdb3f8e2 in WriteToClient (who=0x7ff1bfb3d0c0, count=32, __buf=0x7fff0ab9e5b0) at /usr/include/x86_64-linux-gnu/bits/string3.h:58 oc = 0x7ff1bfa21d50 oco = 0x7ff1bfeda470 padBytes = <optimized out> buf = 0x7fff0ab9e5b0 "\021" #21 0x00007ff1bda0c38a in WriteEventsToClient (events=0x7fff0ab9e5b0, count=1, pClient=<optimized out>) at ../../dix/events.c:6131 eventCopy = {u = {u = {type = 16 '\020', detail = 241 '\361', sequenceNumber = 49048}, keyButtonPointer = {pad00 = 3214471440, time = 32753, root = 3214471552, event = 32753, child = 3214471440, rootX = 32753, rootY = 0, eventX = 23984, eventY = -16933, state = 32753, sameScreen = 0 '\000', pad1 = 0 '\000'}, enterLeave = {pad00 = 3214471440, time = 32753, root = 3214471552, event = 32753, child = 3214471440, rootX = 32753, rootY = 0, eventX = 23984, eventY = -16933, state = 32753, mode = 0 '\000', flags = 0 '\000'}, focus = {pad00 = 3214471440, window = 32753, mode = 128 '\200', pad1 = 241 '\361', pad2 = 152 '\230', pad3 = 191 '\277'}, expose = {pad00 = 3214471440, window = 32753, x = 61824, y = 49048, width = 32753, height = 0, count = 61712, pad2 = 49048}, graphicsExposure = {pad00 = 3214471440, drawable = 32753, x = 61824, y = 49048, width = 32753, height = 0, minorEvent = 61712, count = 49048, majorEvent = 241 '\361', pad1 = 127 '\177', pad2 = 0 '\000', pad3 = 0 '\000'}, noExposure = {pad00 = 3214471440, drawable = 32753, minorEvent = 61824, majorEvent = 152 '\230', bpad = 191 '\277'}, visibility = {pad00 = 3214471440, window = 32753, state = 128 '\200', pad1 = 241 '\361', pad2 = 152 '\230', pad3 = 191 '\277'}, createNotify = {pad00 = 3214471440, parent = 32753, window = 3214471552, x = 32753, y = 0, width = 61712, height = 49048, borderWidth = 32753, override = 0 '\000', bpad = 0 '\000'}, destroyNotify = {pad00 = 3214471440, event = 32753, window = 3214471552}, unmapNotify = {pad00 = 3214471440, event = 32753, window = 3214471552, fromConfigure = 241 '\361', pad1 = 127 '\177', pad2 = 0 '\000', pad3 = 0 '\000'}, mapNotify = {pad00 = 3214471440, event = 32753, window = 3214471552, override = 241 '\361', pad1 = 127 '\177', pad2 = 0 '\000', pad3 = 0 '\000'}, mapRequest = {pad00 = 3214471440, parent = 32753, window = 3214471552}, reparent = {pad00 = 3214471440, event = 32753, window = 3214471552, parent = 32753, x = -3824, y = -16488, override = 241 '\361', pad1 = 127 '\177', pad2 = 0 '\000', pad3 = 0 '\000'}, configureNotify = {pad00 = 3214471440, event = 32753, window = 3214471552, aboveSibling = 32753, x = -3824, y = -16488, width = 32753, height = 0, borderWidth = 23984, override = 219 '\333', bpad = 189 '\275'}, configureRequest = {pad00 = 3214471440, parent = 32753, window = 3214471552, sibling = 32753, x = -3824, y = -16488, width = 32753, height = 0, borderWidth = 23984, valueMask = 48603, pad1 = 32753}, gravity = {pad00 = 3214471440, event = 32753, window = 3214471552, x = 32753, y = 0, pad1 = 3214471440, pad2 = 32753, pad3 = 3185270192, pad4 = 32753}, resizeRequest = {pad00 = 3214471440, window = 32753, width = 61824, height = 49048}, circulate = {pad00 = 3214471440, event = 32753, window = 3214471552, parent = 32753, place = 16 '\020', pad1 = 241 '\361', pad2 = 152 '\230', pad3 = 191 '\277'}, property = {pad00 = 3214471440, window = 32753, atom = 3214471552, time = 32753, state = 16 '\020', pad1 = 241 '\361', pad2 = 49048}, selectionClear = {pad00 = 3214471440, time = 32753, window = 3214471552, atom = 32753}, selectionRequest = {pad00 = 3214471440, time = 32753, owner = 3214471552, requestor = 32753, selection = 3214471440, target = 32753, property = 3185270192}, selectionNotify = {pad00 = 3214471440, time = 32753, requestor = 3214471552, selection = 32753, target = 3214471440, property = 32753}, colormap = {pad00 = 3214471440, window = 32753, colormap = 3214471552, new = 241 '\361', state = 127 '\177', pad1 = 0 '\000', pad2 = 0 '\000'}, mappingNotify = {pad00 = 3214471440, request = 241 '\361', firstKeyCode = 127 '\177', count = 0 '\000', pad1 = 0 '\000'}, clientMessage = {pad00 = 3214471440, window = 32753, u = {l = {type = 3214471552, longs0 = 32753, longs1 = -1080495856, longs2 = 32753, longs3 = -1109697104, longs4 = 32753}, s = {type = 3214471552, shorts0 = 32753, shorts1 = 0, shorts2 = -3824, shorts3 = -16488, shorts4 = 32753, shorts5 = 0, shorts6 = 23984, shorts7 = -16933, shorts8 = 32753, shorts9 = 0}, b = {type = 3214471552, bytes = "\361\177\000\000\020\361\230\277\361\177\000\000\260]\333\275\361\177\000"}}}}} eventTo = <optimized out> i = <optimized out> eventFrom = <optimized out> eventlength = 32 #22 WriteEventsToClient (pClient=0x7ff1bfb3d0c0, count=<optimized out>, events=<optimized out>) at ../../dix/events.c:6015 No locals. ProblemType: Crash DistroRelease: Ubuntu 12.04 Package: xserver-xorg-core 2:1.11.4-0ubuntu4 ProcVersionSignature: Ubuntu 3.2.0-18.28-generic 3.2.9 Uname: Linux 3.2.0-18-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 1.94-0ubuntu2 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz Date: Wed Mar 7 16:17:20 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 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:21e2] InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301) MachineType: LENOVO 1141CTO ProcCmdline: /usr/bin/X :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch ProcEnviron: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-18-generic root=UUID=1cf1e5bc-21fb-4b94-9c30-e859cea641db ro quiet splash vt.handoff=7 SegvAnalysis: Segfault happened at: 0x7ff1bbc9bb01: movdqu %xmm0,-0x20(%rdi) PC (0x7ff1bbc9bb01) ok source "%xmm0" ok destination "-0x20(%rdi)" (0x00000000) not located in a known VMA region (needed writable region)! SegvReason: writing NULL VMA Signal: 11 SourcePackage: xorg-server StacktraceTop: ?? () from /lib/x86_64-linux-gnu/libc.so.6 WriteToClient () WriteEventsToClient () TryClientEvents () ?? () Title: Xorg crashed with SIGSEGV in WriteToClient() UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: dmi.bios.date: 11/03/2011 dmi.bios.vendor: LENOVO dmi.bios.version: 8HET40WW(1.22) dmi.board.asset.tag: Not Available dmi.board.name: 1141CTO 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:bvr8HET40WW(1.22):bd11/03/2011:svnLENOVO:pn1141CTO:pvrThinkPadE420:rvnLENOVO:rn1141CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 1141CTO dmi.product.version: ThinkPad E420 dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.7.0+bzr3035-0ubuntu1~ppa1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.30-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.1-0ubuntu2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.1-0ubuntu2 version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu4 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/ubuntu/+source/xorg-server/+bug/948858/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
