Linux

  1. Bug #355155
  2. Comment #278

Comment 278 for bug 355155

Revision history for this message
Prashant Vaibhav (mercurysquad) wrote : Re: Clocksource tsc unstable leads to lockups in Ubuntu Jaunty

Would anyone of you happen to know how to restrict the lowest C-state of the processor? I ran into a similar problem on freebsd, where the lapic uses ticks on c-states lower than C1, causing temporary or permanent hard-freezes. Setting the lowest c-state to C1 fixed the problem. Under freebsd you set a sysctl (hw.acpi.cpi.cx_lowest=C1).

I'm not sure how this is done on Linux, but if someone does, please try to set the lowest C-state to C1 and see if that helps.