Re: resource for S3 suspend/resume of Radeon
From: Karol Kozimor <hidden>
Date: 2003-03-17 15:34:35
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 ------------------------------------------------------- This SF.net email is sponsored by:Crypto Challenge is now open! Get cracking and register here for some mind boggling fun and the chance of winning an Apple iPod: http://ads.sourceforge.net/cgi-bin/redirect.pl?thaw0031en