Ubuntu
linux package

  1. Bug #355155
  2. Comment #53

Comment 53 for bug 355155

Revision history for this message
Sir Romanov (romain-couillet) wrote : Re: Computer hard locks randomly with ubuntu jaunty

I can confirm on my side: at startup I get a "tsc unstable message" 4sec after boottime, then at some point (randomly) dmesg brings "hpet increasing delta..." and computer slows down dramatically. This problem happened last night while computer was idle.

I tried all possibilities of Clocksources (from cat /sys/devices/system/clocksource/clocksource0/available_clocksource) in /boot/grub/menu.lst. None of them brings anything good. By default HPET is used and produces the least inconvenience. Note that then appending "notsc", dmesg brought a message saying TSC cannot be completly discarded since the kernel is compiled with option CONFIG_X86_TSC. This might explain why it doesn't help.

I also tried different older kernels in my grub list dating up to 2.6.27-7, same stalling problem. Though I haven't kept trace of the syslogs for those kernels.

As for problem reproduction, it seems to arise with higher probabilities on video playback (under MPlayer). 20min of video playback are currently impossible.

Anyone tried alternative distros such as Fedora or else? Is it really an Ubuntu/Jaunty problem?

Dell E6400 / Dual Core
2.6.28-11-generic, 64bit