Radeon AGP suspend/resume support (was: Re: Thinkpad T41 Sleep issues)

Vaclav Rehak vasek at openbsd.cz
Fri Oct 8 07:08:31 PDT 2004

On Fri, Oct 08, 2004 at 03:27:58AM -0700, Bruce M Simpson wrote:
> Hello,
> On Thu, Oct 07, 2004 at 11:46:19PM -0400, Jordan Sissel wrote:
> > Absolutely, I'll help in any way I can. I'm currently content without
> > drm, however I would like to see it fixed for those who can't stop
> > playing crack attack (me!). I presently have zero knowlwedge about
> > kernel modules or drm, but I'm willing to learn and help with
> > whatever's going on with this.
> And most of what we need in the DRM driver is already there, and is
> presumably called by the DRI framework in the X server:
> 	http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/drm/radeon_cp.c
> 	(Revision 1.7 in particular)
> What I'm not clear about is if the device gets cleanly stopped before
> FreeBSD actually suspends the machine (with acpi or without). I think
> Eric may be able to help clarify some of this as he's more familiar
> with the code in question than I (Cc:'d).

It seems to me that there are maybe more issues in the radeon drm driver,
see http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/72224
(the synopsis is actually not precise as the problem seems to be more
drm specific than umass related).

Btw, sleep works fine on my R40, while suspend is somehow completly

Vaclav Rehak

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