I'm sorry for dumping the dmesg output into the thread. Here it is in a file. But it's from after reboot. Does this have the error messages in it from the previous session? Do I have to get a file from /var/log/ ?
** Attachment added: "dmesg.txt" https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1752145/+attachment/5070185/+files/dmesg.txt -- 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/1752145 Title: system freeze after full screen video viewing with Xorg on ultrawide monitor Status in linux package in Ubuntu: Incomplete Status in mesa package in Ubuntu: Incomplete Status in mutter package in Ubuntu: Incomplete Bug description: 1. open a video (either youtube or totem) 2. put it in full screen. 3. wait Eventually (within minutes) the system will freeze in one of 2 ways. 1. There will be only blackness with no response (<ctr><alt><f3> even unresponsive). 2. There will be snow that shifts with keyboard and mouse interaction (see photo). ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: gnome-shell 3.26.2-0ubuntu0.1 ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3 Uname: Linux 4.15.0-10-generic x86_64 ApportVersion: 2.20.7-0ubuntu3.7 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Tue Feb 27 19:08:13 2018 DisplayManager: gdm3 GsettingsChanges: b'org.gnome.shell' b'enabled-extensions' b"['workspace-g...@mathematical.coffee.gmail.com', 'alt-tab-worksp...@kwalo.net', 'system-moni...@paradoxxx.zero.gmail.com', 'user-th...@gnome-shell-extensions.gcampax.github.com', 'ubuntu-d...@ubuntu.com', 'ubuntu-appindicat...@ubuntu.com']" b'org.gnome.shell' b'enable-hot-corners' b'true' b'org.gnome.shell' b'favorite-apps' b"['googleinbox.desktop', 'googlecalendar.desktop', 'org.gnome.Nautilus.desktop', 'firefox.desktop']" b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'" b'org.gnome.desktop.interface' b'monospace-font-name' b"'Ubuntu Mono 11'" InstallationDate: Installed on 2018-01-05 (53 days ago) InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412) SourcePackage: gnome-shell UpgradeStatus: Upgraded to artful on 2018-01-05 (53 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1752145/+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