Messages in this thread | | | Date | Mon, 5 Mar 2007 15:06:58 -0000 (GMT) | Subject | Re: [4/6] 2.6.21-rc2: known regressions | From | "Andrew" <> |
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On Mon, March 5, 2007 10:35 am, Antonino A. Daplas wrote: > > This is not a framebuffer nor console problem. > > > I think Andrew Nelless confirmed that the cause is from the above > commit. How to fix it, I don't know. Perhaps the acpi_skip_timer_override boot option has to > be used. > > Tony >
Yes, apologies for taking so long with this. I tried the acpi_skip_timer_override boot option last night, after Tony pointed it out, and this also works around the problem.
To summarize the cause is the changes made to early-quirks.c in the mentioned commit and when this is reverted the problem goes away.
There doesn't seem to be any sign of a living HPET on this board or any way of enabling it in the current BIOS revision but it seems on intermittent boots the check in early-quirks.c returns, the timer override doesn't happen, and the kernel fails to boot properly.
Btw, this is the Asus A8N-VM *CSM* main board, the non-CSM variety actually has a nForce 410 rather than an nForce 430 chip. I don't know whether they behave any differently but the two boards actually have different BIOS releases.
If reverting the commit would disable the HPET on boards that do actually support it I personally don't mind using the acpi_skip_timer_override workaround.
- Andrew
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