June 2010
I kept getting messages like set_rtc_mmss: can't update from 0 to 59
, every now and then, and they would come in batches.
The PC would slow down a lot, and timekeeping would miss several hours within a few hours.
Just prior to such a batch of set_rtc_mmss messages, I would see one Clocksource tsc unstable
message.
So I read a mail thread, a forum and another thread, and also some ntp.org docs. Then I
removed the boot parameters
noapic nolapic acpi=off
,
and added boot parameter
clocksource=hpet
,
and rebooted.
Now the hpet is time source:
jurjen@host:~$ sudo cat /sys/devices/system/clocksource/clocksource0/current_clocksourcehpet