The proposed fix works on my machine. Thanks.
Ubuntu 16.04; Processor: Intel® Core™ i5 CPU M 540 @ 2.53GHz × 4;
Graphics: Intel® Ironlake Mobile
description: Laptop
product: Latitude E4310
vendor: Dell Inc.
version: 0001
serial: G4N8XN1
width: 64 bits
capabilities: smbios-2.6 dmi-2.6 vsyscall32
configuration: boot=normal chassis=laptop
uuid=44454C4C-3400-104E-8038-C7C04F584E31
*-core
description: Motherboard
product: 012JJ4
vendor: Dell Inc.
physical id: 0
version: A01
*-firmware
description: BIOS
vendor: Dell Inc.
physical id: 0
version: A15
date: 05/12/2017
size: 64KiB
capacity: 960KiB
*-display
description: VGA compatible controller
product: Core Processor Integrated Graphics Controller
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 02
width: 64 bits
clock: 33MHz
capabilities: msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
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You received this bug notification because you are a member of Ubuntu
Touch seeded 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
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