Paul E, thank you for reporting this and helping make Ubuntu better. Could you please run the following command once from a terminal by ensuring you have the package xdiagnose installed, and that you click the Yes button for attaching additional debugging information: apport-collect -p xorg 1578715
When reporting xorg related bugs in the future, please do so via the above method. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs. ** Package changed: xserver-xorg-video-nouveau (Ubuntu) => xorg (Ubuntu) ** Changed in: xorg (Ubuntu) Importance: Undecided => Low ** Changed in: xorg (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1578715 Title: Blank screen after computer locks for long time Status in xorg package in Ubuntu: Incomplete Bug description: After my computer is locked for a long time, I am unable to get back to the unlock screen, nor can I get to the virtual terminals. I suspect this is an issue with nouveau, as kern.log has the lines: May 4 20:06:15 paul-OptiPlex-9020-citp kernel: [32188.115554] nouveau 0000:01:00.0: fifo: SCHED_ERROR 0a [CTXSW_TIMEOUT] May 4 20:06:15 paul-OptiPlex-9020-citp kernel: [32188.115559] nouveau 0000:01:00.0: fifo: sw engine fault on channel 2, recovering... May 4 20:06:17 paul-OptiPlex-9020-citp kernel: [32190.115160] nouveau 0000:01:00.0: fifo: runlist 0 update timeout May 4 20:06:19 paul-OptiPlex-9020-citp kernel: [32192.410337] nouveau 0000:01:00.0: fifo: SCHED_ERROR 0a [CTXSW_TIMEOUT] May 4 20:06:23 paul-OptiPlex-9020-citp kernel: [32196.705111] nouveau 0000:01:00.0: fifo: SCHED_ERROR 0a [CTXSW_TIMEOUT] with the last line repeated many times. Bugs I found with similar error messages: https://bugs.freedesktop.org/show_bug.cgi?id=90453 https://bugs.freedesktop.org/show_bug.cgi?id=72180 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1578715/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
