It just occurred me that this could be related to kernel timekeeping. I think my system should be running with hpet timers but there's some evidence in dmesg that there's something wrong.
$ dmesg ... (redundant stuff about drm:i915 related problems) [598543.623013] Clocksource tsc unstable (delta = 299947015772 ns) [598544.151026] set_rtc_mmss: can't update from 1 to 56 ... (repeated messages) [598545.151031] set_rtc_mmss: can't update from 2 to 57 ... (repeated messages) [598605.151033] set_rtc_mmss: can't update from 3 to 58 ... (repeated messages) [598669.151031] set_rtc_mmss: can't update from 4 to 59 ... (repeated messages) $ cat /sys/devices/system/clocksource/clocksource0/current_clocksource hpet $ cat /sys/devices/system/clocksource/clocksource0/available_clocksource hpet acpi_pm -- Terminal freezes/stalls randomly https://bugs.launchpad.net/bugs/576333 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
