Re: Radeon PM Support

[Micha Feigin <michf-+lLcF8/aw9x6auLlOhE+pQ@public.gmane.org>]

On Fri, Jul 30, 2004 at 04:27:56PM +0200, wwp wrote:
> Hello Micha,
> 
> 
> On Fri, 30 Jul 2004 17:10:28 +0300 Micha Feigin <michf-+lLcF8/aw9x6auLlOhE+pQ@public.gmane.org> wrote:
> 
> [snip]
> > I am not sure about the current state of things. AFAIK the problem was
> > with dri suspend support for radeon, and at the time at least, the card
> > was reset on VT switch to enable suspend. IIRC the patch was
> > incorporated into main the main tree quite some time ago.
> > 
> > I have no experience with S3 suspend (my laptop doesn't seem to support
> > it) but it does suspend with swsusp2 if I switch VT.
> 
> I m just curious: do you switch to VT or do you close X and return to console
> (or even do `init 2`)?
> 

I have a script that basically does

VT=`fgconsole`
chvt 9
echo 4 > /proc/acpi/sleep (or whatever sleep command you use)
chvt $VT

This changes to a console terminal before suspend, suspends, and on
resume switches back to X. This will also reset the card properly. Its
actually a mach64 and not a radeon, but I ported the relevant portions
of the radeon dri driver PM to the mach64. Note though that mach64
needs no kernel PM support, its all done on the X side (didn't find out
yet how to do it on the kernel side, although I hope to do that when I
have them time, that would save the VT switch).

> 
> Regards,
> 
> -- 
> wwp
> 
> 
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