Proposed fix fixed it for me (Lenovo 3000 N200). Many thanks.
Original error was: compiz[1519]: segfault at 0 ip 00007f54d91a2986 sp 00007ffd58273a20 error 4 in i965_dri.so[7f54d8bca000+82d000] Machine details: $ sudo lshws description: Notebook product: 0769EUG (Lenovo) vendor: LENOVO version: 3000 N200 width: 64 bits capabilities: smbios-2.4 dmi-2.4 vsyscall32 configuration: boot=oem-specific chassis=notebook family=Lenovo sku=Lenovo *-cpu description: CPU product: Intel(R) Core(TM)2 Duo CPU T5750 @ 2.00GHz vendor: Intel Corp. physical id: 4 bus info: cpu@0 version: CPU Version slot: U2E1 size: 1634MHz capacity: 4096MHz width: 64 bits capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx x86-64 constant_tsc arch_perfmon pebs bts rep_good nopl cpuid aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm pti dtherm cpufreq *-pci description: Host bridge product: Mobile PM965/GM965/GL960 Memory Controller Hub vendor: Intel Corporation physical id: 100 bus info: pci@0000:00:00.0 version: 0c width: 32 bits clock: 33MHz *-display:0 description: VGA compatible controller product: Mobile GM965/GL960 Integrated Graphics Controller (primary) vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 0c width: 64 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:16 memory:fc000000-fc0fffff memory:d0000000-dfffffff ioport:1800(size=8) memory:c0000-dffff $ apt policy install libgl1-mesa-dri libgl1-mesa-dri: Installed: 17.2.4-0ubuntu1~16.04.4 Candidate: 17.2.4-0ubuntu1~16.04.4 Version table: *** 17.2.4-0ubuntu1~16.04.4 400 400 http://gb.archive.ubuntu.com/ubuntu xenial-proposed/main amd64 Packages 100 /var/lib/dpkg/status 17.2.4-0ubuntu1~16.04.2 500 500 http://gb.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages 11.2.0-1ubuntu2 500 500 http://gb.archive.ubuntu.com/ubuntu xenial/main amd64 Packages -- 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/1735594 Title: [regression] compiz crashes after Mesa upgrade Status in mesa package in Ubuntu: Fix Committed Status in mesa source package in Xenial: Fix Committed Status in mesa source package in Artful: Fix Committed Bug description: [Impact] When I use the Unity session I automatically get logged out under these conditions: When I hover with my mouse over any icon of the sidebar. When I press the alt key. When I press the super key. running dmesg after this unwanted logout happens I get following information: compiz[10616]: segfault at 0 ip 00007fbca309feeb sp 00007fff5f59a4d0 error 4 in i965_dri.so[7fbca2af6000+7e4000] This is caused by a mesa upgrade, which added a patch for bug #1727401. The crasher is reproduced on: - gen4 / gen5 Intel - if using modesetting X driver, like when xserver-xorg-video-intel is not installed, or the HWE stack is installed (xserver-xorg-core-hwe-16.04 defaults to modesetting) [Test case] Log in to Unity, open the dash or try to log out etc. Compiz shouldn't crash. [Regression potential] The backported patches need to be tested, here for regressions and on 1727401 that they fix the original bug (again). Best to test on a wide array of Intel HW: gen4 (965GM/GM45/G45) gen5 (Ironlake) gen6 (Sandy Bridge) gen7 (Bay Trail, Ivy Bridge, Haswell) gen8 (Braswell, Broadwell) gen9 (Apollo Lake, Skylake, Gemini Lake, Kaby Lake, Coffee Lake) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1735594/+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