I also get this message during boot - but from what I read it's not a problem:
"As far as i know Pentium M processors have dynamically changed clock speed (ofc to save power). That's why kernel notice that TSC is unstable (it is indeed). [...] I don't think that there is an easy way to fix it (it is not even a bug), time-stamp counter is not perfect..." [Pawel Dziepak] http://lkml.indiana.edu/hypermail/linux/kernel/0707.1/0621.html Most laptops mentioned here do use a Pentium M (<- Centrino). The tsc message still shows with 2.6.28-11-generic/Jaunty Alpha [ 0.000000] Fast TSC calibration using PIT [ 2.877852] Marking TSC unstable due to TSC halts in idle [ 3.348014] Clocksource tsc unstable (delta = -412296801 ns) Boot time tests (Acer 8106wlmi Pentium M 1.87Ghz): Standard boot options: ~1:08 clocksource=tsc ~6:51 (I wouldn't want to use that) clocksource=hpet ~1:08 clocksource=notsc ~1:08 acpi_pm ~1:08 -- Clocksource tsc unstable add 10 seconds to the boot time. https://bugs.launchpad.net/bugs/190414 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
