*** This bug is a duplicate of bug 1735594 *** https://bugs.launchpad.net/bugs/1735594
Apologies for double-posting. Some additional info that may be helpful. Paste from /var/crash/_usr_bin_compiz.1000.crash: //BEGIN CODE PASTE// ProblemType: Crash Architecture: amd64 CrashCounter: 1 CurrentDesktop: Unity Date: Thu Jul 26 22:13:47 2018 DistroRelease: Ubuntu 16.04 ExecutablePath: /usr/bin/compiz <snip> SegvAnalysis: Segfault happened at: 0x7f19500522c9: movdqu (%r8,%rbx,1),%xmm9 PC (0x7f19500522c9) ok source "(%r8,%rbx,1)" (0x00000320) not located in a known VMA region (needed readable region)! destination "%xmm9" ok SegvReason: reading NULL VMA SourcePackage: compiz Stacktrace: #0 0x00007f19500522c9 in ?? () No symbol table info available. #1 0x0000000000000000 in ?? () No symbol table info available. StacktraceTop: ?? () ?? () Tags: xenial xenial ubuntu compiz-0.9 ThreadStacktrace: . Thread 6 (Thread 0x7f19297bc700 (LWP 2252)): #0 syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38 No locals. #1 0x00007f1956c7dcfa in g_cond_wait_until () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #2 0x00007f1956c0d999 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #3 0x00007f1956c0dfbb in g_async_queue_timeout_pop () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #4 0x00007f1956c6060a in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #5 0x00007f1956c5fbb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #6 0x00007f19565ca6ba in start_thread (arg=0x7f19297bc700) at pthread_create.c:333 __res = <optimised out> pd = 0x7f19297bc700 now = <optimised out> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139746046887680, 2698625152003350009, 0, 140732259479199, 139746046888384, 139746491836624, -2647795865437594119, -2647591021518381575}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}} not_first_call = <optimised out> pagesize_m1 = <optimised out> sp = <optimised out> freesize = <optimised out> __PRETTY_FUNCTION__ = "start_thread" #7 0x00007f195841641d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 No locals. . Thread 5 (Thread 0x7f1942859700 (LWP 2244)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 No locals. #1 0x00007f194343670b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r300_dri.so No symbol table info available. #2 0x00007f1943436427 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r300_dri.so No symbol table info available. #3 0x00007f19565ca6ba in start_thread (arg=0x7f1942859700) at pthread_create.c:333 __res = <optimised out> pd = 0x7f1942859700 now = <optimised out> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139746466961152, 2698625152003350009, 0, 140732259485039, 139746466961856, 0, -2647566498614731271, -2647591021518381575}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}} not_first_call = <optimised out> pagesize_m1 = <optimised out> sp = <optimised out> freesize = <optimised out> //END CODE PASTE// (Log continues, but it more-or-less repeats itself.) Paste from /var/log/syslog (starting from first instance of the segfault): //BEGIN CODE PASTE// Jul 27 18:30:19 HAPPY kernel: [ 669.687946] compiz[2543]: segfault at 738 ip 00007f813c01c2c9 sp 00007fff02f61ea0 error 4 Jul 27 18:30:20 HAPPY gnome-session[2156]: (unity-fallback-mount-helper:2488): GLib-GIO-CRITICAL **: g_dbus_proxy_call_finish_internal: assertion 'G_IS_DBUS_PROXY (proxy)' failed Jul 27 18:30:20 HAPPY gnome-session[2156]: (unity-fallback-mount-helper:2488): GLib-CRITICAL **: g_variant_get_va: assertion 'value != NULL' failed Jul 27 18:30:20 HAPPY gnome-session[2156]: (unity-fallback-mount-helper:2488): GLib-CRITICAL **: g_variant_unref: assertion 'value != NULL' failed Jul 27 18:30:20 HAPPY gnome-session[2156]: ** (unity-fallback-mount-helper:2488): WARNING **: Can't call IsLocked() on the Unity.Session object: Cannot invoke method; proxy is for a well-known name without an owner and proxy was constructed with the G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START flag Jul 27 18:30:21 HAPPY org.gnome.zeitgeist.Engine[2019]: ** (zeitgeist-datahub:2766): WARNING **: zeitgeist-datahub.vala:229: Unable to get name "org.gnome.zeitgeist.datahub" on the bus! Jul 27 18:30:23 HAPPY kernel: [ 673.386286] compiz[2740]: segfault at 328 ip 00007fbb600272c9 sp 00007ffc75bf8da0 error 4 Jul 27 18:30:23 HAPPY gnome-session[2156]: ** (unity-fallback-mount-helper:2488): WARNING **: Can't call IsLocked() on the Unity.Session object: Cannot invoke method; proxy is for a well-known name without an owner and proxy was constructed with the G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START flag //END CODE PASTE// -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1741447 Title: Unity / Compiz in a crash loop after login, after mesa updates of 2018-01-04 Status in Mesa: New Status in mesa package in Ubuntu: Confirmed Status in mesa source package in Xenial: Confirmed Status in mesa source package in Artful: Confirmed Bug description: GUI is constantly crashing, can't start desktop Jan 5 11:21:29 1810 kernel: [ 806.368754] compiz[10824]: segfault at 0 ip 00007f83c4f31c16 sp 00007ffd48dfc2f0 error 4 in i965_dri.so[7f83c4954000+82d000] Jan 5 11:21:40 1810 kernel: [ 817.279740] compiz[11111]: segfault at 0 ip 00007fda21519c16 sp 00007ffd7b40a150 error 4 in i965_dri.so[7fda20f3c000+82d000] Jan 5 11:22:30 1810 kernel: [ 867.445137] compiz[11271]: segfault at 0 ip 00007f8462855c16 sp 00007fff07c857f0 error 4 in i965_dri.so[7f8462278000+82d000] Jan 5 11:22:46 1810 kernel: [ 883.319195] compiz[11458]: segfault at 0 ip 00007f72b7af0c16 sp 00007ffc3b92d830 error 4 in i965_dri.so[7f72b7513000+82d000] Jan 5 11:23:01 1810 kernel: [ 898.587610] compiz[11516]: segfault at 0 ip 00007fe25113dc16 sp 00007ffcf79754c0 error 4 in i965_dri.so[7fe250b60000+82d000] In /var/crash: _usr_bin_compiz.999.crash Did manage to start a GUI in Low graphics mode (lowgfx.conf) but this is not really usable. - dash not working - no window switching - sometimes all windows disappear for a few seconds So effectively my laptop is not usable after latest updates. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: unity 7.4.0+16.04.20160906-0ubuntu1 ProcVersionSignature: Ubuntu 4.10.0-42.46~16.04.1-generic 4.10.17 Uname: Linux 4.10.0-42-generic x86_64 .tmp.unity_support_test.0: .tmp.unity_support_test.1: ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true CurrentDesktop: Unity Date: Fri Jan 5 11:16:53 2018 DistUpgraded: 2016-04-22 18:36:32,349 DEBUG icon theme changed, re-reading DistroCodename: xenial DistroVariant: ubuntu GraphicsCard: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller]) Subsystem: Acer Incorporated [ALI] Mobile 4 Series Chipset Integrated Graphics Controller [1025:029b] Subsystem: Acer Incorporated [ALI] Mobile 4 Series Chipset Integrated Graphics Controller [1025:029b] InstallationDate: Installed on 2014-04-18 (1357 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) MachineType: Acer Aspire 1810TZ ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-42-generic root=UUID=86d7d9a6-ffc3-47cb-adc4-68cfcbcadcef ro quiet splash vt.handoff=7 SourcePackage: unity UpgradeStatus: Upgraded to xenial on 2016-04-22 (622 days ago) dmi.bios.date: 08/31/2010 dmi.bios.vendor: INSYDE dmi.bios.version: v1.3314 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: JM11-MS dmi.board.vendor: Acer dmi.board.version: Base Board Version dmi.chassis.type: 1 dmi.chassis.vendor: Chassis Manufacturer dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnINSYDE:bvrv1.3314:bd08/31/2010:svnAcer:pnAspire1810TZ:pvrv1.3314:rvnAcer:rnJM11-MS:rvrBaseBoardVersion:cvnChassisManufacturer:ct1:cvrChassisVersion: dmi.product.name: Aspire 1810TZ dmi.product.version: v1.3314 dmi.sys.vendor: Acer version.compiz: compiz 1:0.9.12.2+16.04.20160823-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.83-1~16.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 17.2.4-0ubuntu1~16.04.2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 17.2.4-0ubuntu1~16.04.2 version.xserver-xorg-core: xserver-xorg-core N/A version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A xserver.bootTime: Fri Jan 5 11:14:24 2018 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.19.5-0ubuntu2~16.04.1 xserver.video_driver: modeset To manage notifications about this bug go to: https://bugs.launchpad.net/mesa/+bug/1741447/+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