As additional information, I can add that this bug seems to correlate with monitor type or screen resolution.
When I encountered the error (all the time), I was using a high res HP Z27s monitor (I attached get-edid and xrand information with Z27s prefixes). However, since I couldn't work with the bug in effect, I had to do something and so I tried changing to a normal Samsung SyncMaster SA650 monitor (information attached with SA650 prefixes) and since then I haven't experienced the bug. I hope this extra information is useful. I'm happy to do further troubleshooting if necessary. -- 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/1727365 Title: gnome-shell crashed with SIGSEGV in glsl_type::_vec4_type() from intel_update_image_buffers() from intel_update_renderbuffers() Status in gnome-shell package in Ubuntu: New Status in mesa package in Ubuntu: New Bug description: This bug is triggered for me by leaving the system inactive for a time and it happens whether the system settings is set to lock the screen or not, but I can be provoked by locking the screen. At the time when I want to reactivate the system (as I can see on the time stamp on the crash report), something happens and I loose the entire login session and am dropped at the login screen to login anew. This has lead me to believe that this has to do with re-enabling the display. The effect of this bug is that I loose *all* running programs in my session and has to start everything up again, which means that Ubuntu 17.10 is basically unusable for me. For this reason, of course depending on how many people are affected, I think this should be considered a high priority bug. This is a fresh install with no shenanigans except installing a few programs that I needed. I happy to provide any extra information is required and to any kind of testing that might be required as long as I can return to a non- modified system after test. Mandatory info: lsb_release -rd Description: Ubuntu 17.10 Release: 17.10 apt-cache policy gnome-shell gnome-shell: Installeret: 3.26.1-0ubuntu4 Kandidat: 3.26.1-0ubuntu4 Versionstabel: *** 3.26.1-0ubuntu4 500 500 http://dk.archive.ubuntu.com/ubuntu artful/main amd64 Packages 100 /var/lib/dpkg/status ProblemType: Crash DistroRelease: Ubuntu 17.10 Package: gnome-shell 3.26.1-0ubuntu4 ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4 Uname: Linux 4.13.0-16-generic x86_64 ApportVersion: 2.20.7-0ubuntu3 Architecture: amd64 CrashCounter: 1 CurrentDesktop: ubuntu:GNOME Date: Wed Oct 25 16:11:36 2017 DisplayManager: gdm3 ExecutablePath: /usr/bin/gnome-shell GsettingsChanges: b'org.gnome.shell' b'enabled-extensions' b"['workspace-g...@mathematical.coffee.gmail.com', 'commandout...@elken.tdos.gmail.com']" b'org.gnome.shell' b'favorite-apps' b"['firefox.desktop', 'rhythmbox.desktop', 'org.gnome.Nautilus.desktop', 'org.gnome.Software.desktop', 'yelp.desktop']" b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'" InstallationDate: Installed on 2017-10-23 (2 days ago) InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018) ProcCmdline: /usr/bin/gnome-shell ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=da_DK.UTF-8 SHELL=/bin/bash SegvAnalysis: Segfault happened at: 0x7f37ebf9cf80: push %rdx PC (0x7f37ebf9cf80) in non-executable VMA region: 0x7f37ebf99000-0x7f37ec000000 rw-p None source "%rdx" ok destination "(%rsp)" (0x7fff6f7a1cb8) ok SegvReason: executing writable VMA None Signal: 11 SourcePackage: gnome-shell StacktraceTop: __bss_start () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so ?? () from /usr/lib/x86_64-linux-gnu/mutter/libmutter-cogl-1.so Title: gnome-shell crashed with SIGSEGV in __bss_start() UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1727365/+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
