I'm running Ubuntu 16.04.3, my Unity was crashing in a similar way as it was originally described in this bug. Installing libgl1-mesa-dri/xenial- proposed fixed the issue. However, today, I tried to install Steam and it failed, at least partially, because the system is not being able to install libgl1-mesa-dri:i386 and libgl1-mesa-glx:i386. This seems to be related to the installation of libgl1-mesa-dri/xenial-proposed.
These are the messages I see in the terminal when trying to open Steam for the first time: Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: libegl1-mesa : Depends: libgl1-mesa-dri (= 17.2.4-0ubuntu1~16.04.4) but it is not going to be installed libgnome-desktop-3-12 : Depends: libgtk-3-0 (>= 3.9.10) but it is not going to be installed libqt5svg5 : Depends: libqt5widgets5 (>= 5.3.0) but it is not going to be installed qtdeclarative5-ubuntu-ui-toolkit-plugin : Depends: qml-module-ubuntu-components Depends: qml-module-ubuntu-performancemetrics Depends: qml-module-ubuntu-test but it is not going to be installed ubuntu-system-settings : Depends: libubuntuoneauth-2.0-0 (>= 13.08) but it is not going to be installed Depends: powerd (>= 0.15) but it is not going to be installed or gnome-settings-daemon but it is not going to be installed Depends: qml-module-qtmultimedia or qml-module-qtmultimedia-gles but it is not going to be installed Depends: qtdeclarative5-ubuntu-content1 but it is not going to be installed Recommends: ubuntu-system-settings-online-accounts but it is not going to be installed E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held 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