Sorry about the "ubuntu-bug" filing. I simply googled "report Ubuntu bug" and Google sent me straight to the Launchpad method, so I assumed that was the correct way to do it. If there is a better/preferred way it certainly doesn't seem clear when searching online.
Attached are dmesg and journal as requested, run with the nvidia card, which leads to the frequent GUI lockups and systemd-timesync 100% CPU loads I have also conducted one more experiment where I removed the graphics card and used the motherboard's onboard Intel graphics instead. That has run stable with no lockups for two days, so it seems not to be affected by the same problem. It may somehow be linked to the nvidia graphics, whether run under nouveu or the proprietary driver. I also tried an older Nvidia card (GV-N240D3-1GI, slightly fancy in its day, big cooling fan) and had the same issues as with the newer one. I am also attaching for your reference dmesg and journal when it's running on the onboard intel graphics, in case comparing the two is helpful. The onboard graphics seem pretty stable; the only odd artifact I sometimes get is the screen going black for about half a second to one second (for no reason I can readily ascertain) and then going back to totally normal as though nothing had happened. In terms of impact this minor niggle is easy to live with - certainly a lot easier than total GUI lockup every few hours. The "brief black screen" episodes happen every few hours as far as I can tell. Unlike doing 'dmesg > filename.txt' , if I look in the logs directory, 'cat /var/log/dmesg' shows a very empty file - just one line saying "(Nothing has been logged yet.)" On Wednesday, June 08, 2016 10:30 PM, Martin Pitt wrote: > Pleeeeeeeease file bugs with "ubuntu-bug", not directly on Launchpad, to > collect some actually useful information automatically. > > Please run > > sudo journalctl -b > /tmp/journal.txt > dmesg > /tmp/dmesg.txt > > and attach both files here. Thanks! > > ** Changed in: systemd (Ubuntu) > Status: New => Incomplete > ** Attachment added: "dmesg.txt" https://bugs.launchpad.net/bugs/1586417/+attachment/4680726/+files/dmesg.txt ** Attachment added: "journal.txt" https://bugs.launchpad.net/bugs/1586417/+attachment/4680727/+files/journal.txt ** Attachment added: "dmesgintergraphics.txt" https://bugs.launchpad.net/bugs/1586417/+attachment/4680728/+files/dmesgintergraphics.txt ** Attachment added: "journalintelgraphics.txt" https://bugs.launchpad.net/bugs/1586417/+attachment/4680729/+files/journalintelgraphics.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1586417 Title: Ubuntu 16.04 Desktop kworker/1:0 and systemd-timesync use 100% CPU, system very slow To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1586417/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
