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SubjectRe: 2.6.21-rc1: framebuffer/console boot failure
From
On Mon, February 26, 2007 11:09 pm, Antonino A. Daplas wrote:
>
> Not sure if the timer override workaround for nvidia chipsets is the
> culprit, but if you want, you can choose to revert that to the previous behavior (which is
> ignoring ACPI timer override). Open arch/x86_64/kernel/earlyquirk.c:nvidia_bugs() and change
> this line:
>
> if (acpi_table_parse(ACPI_SIG_HPET, nvidia_hpet_check)) return; into this:
>
> acpi_table_parse(ACPI_SIG_HPET, nvidia_hpet_check); /* return; */
>
>
> Tony
>

This fixes the problem. After a lot of rebooting
and testing the problem is definitely gone when this
check is patched out and the ACPI timer override is
ignored. It looks like there should be a cleaner
patch than just obliterating the condition and return
though.

Perhaps the code should remain as is and
"acpi_use_timer_override" could be complimented
by exposing the "acpi_skip_timer_override" option to
the kernel command line?

This seems to have been exposed in the past:
https://www.x86-64.org/pipermail/discuss/2005-April/005948.html

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