Re: [2/6] 2.6.21-rc2: known regressions

Pavel Machek
2007-03-09T23:35:36Z

Hi!

> > You're better off using the VGA console, and lettign X re-initialize the
> > graphics device. That generally at least has a reasonably good chance of
> > working.
> >
> > Re-initializing graphics modes really is very hard. You can try with the
> > BIOS video hack (I forget the kernel command line to turn it on), but we
> > really do end up depending on X doing it better.
>
> acpi_sleep=s3_bios has always worked for me on my ThinkPad T42p.
>
> Even if one doesn't use the fb console at all, radeonfb apparently
> is still required on some ThinkPad models to work around BIOS bugs:
>
> http://www.thinkwiki.org/wiki/Problem_with_high_power_drain_in_ACPI_sleep#Radeon_GPU_not_powered_off

s2ram should be able to work around this, it has parts from
radeontool. (suspend.sf.net).

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