Comment 223 for bug 355155

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NightWolf (zsolt-erhardt) wrote : Re: Clocksource tsc unstable leads to lockups in Ubuntu Jaunty

@VastOne, Sir Romanov: I don't think it could be an overclocking/heating problem. Or at least not in my case, since I use a C2D E8400 and never thought of overclocking. And since my BIOS controls the fans in my chassis (CPU fan 1, chassis fan 1) (ASUS Q-Fan), and never experienced such error in windows, overheating can't be the source of the freezes.

Anyway, it seems to me, that there are different type of freezes. Laysan wrote, that his computer "only" turns sluggish, however, in my case, the computer completely unusable after the freeze. My mouse (A4Tech USB) losts power, the keyboard is not responding (even pressing the num lock has no effect). It's the same like when I shut down the computer, the only difference it's that it still has power (or at least i can hear the fans, the power supply unit, and the power on led is still on). The daemons stop, I can't establish connection through ssh, can't see myself logged in in pidgin. Rebooting the computer it's working fine, until another freeze.

I have been thinking of hardware problems, but I'm not experiencing anything under Windows (even after using the computer for more than 12 hours), memory is just fine (the configuration is only a year old).

Last time I booted to Ubuntu 9.04 I was running "top" in terminal, just to see whether something happens before the freeze. Nothing at all, no unusual high CPU/memory usage.

Tomorrow, I will have some time, so I will be testing the computer (I will even try installing Ubuntu on a pendrive and boot from it, just to be sure the installation isn't the problem).