I'm seeing something superficially similar in 20.04 desktop edition, in a Dell workstation (i.e. h/w box, not a VM).
The desktop from time to time becomes extremely sluggish with long delays for keystroke inputs and screen refreshes. e.g. we have chromium pages with real-time clock displays, and in this mode, they only refresh maybe 3-4 times per minute. Text entered in a terminal may not show for a minute. This situation can persist for hours. No obvious errors in system logs. CPU usage shows gnome-shell at 100% cpu, nothing else abnormal. An strace on gnome-shell shows a massive stream of sched_yield() = 0. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1517901 Title: gnome-shell spins over sched_yield with 100% CPU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1517901/+subscriptions -- desktop-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
