Re: resource for S3 suspend/resume of Radeon

[Karol Kozimor <sziwan-DETuoxkZsSqrDJvtcaxF/A@public.gmane.org>]

Thus wrote Charl P. Botha:
> This patch to Linux kernel 2.4.20-ben8 has just been brought to my
> attention: http://penguinppc.org/~benh/new_sleep.diff
> 
> benh and ATI seem to have fixed the suspension code of the radeon.  I
> have looked at this (see the Radeon bits) and at Patrick Mochel's power
> management architecture code and documentation and it does look like a
> lot of this code could be used to make ACPI S3 (suspend to RAM) a
> reality on Radeon-using laptops.

Which radeon do you have in mind exactly? I use an M7 LW chip, and I get
the following: both in 2.4.x and 2.5.x the display does not power-off when
in S1 (which is, I believe, expected), and during S3 it poweroffs and comes
back in, provided I pass the acpi_sleep=s3_bios option.
The latter was only tested using VGA console, because AFAIK the framebuffer
support in current 2.5 kernels is faulty (at least it didn'r work for me,
and since I have problems with 2.5 that are more serious, I didn't
investigate).

Anyway, my Radeon seems to work quite fine.
Best regards,

-- 
Karol 'sziwan' Kozimor
sziwan-DETuoxkZsSqrDJvtcaxF/A@public.gmane.org


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