linux-kernel - Re: intel-agp PM experiences (was: 2.6.20-rc5: usb mouse breaks suspend to ram)

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Message-ID: <20070118231650.GA5352@ucw.cz>
Date:	Thu, 18 Jan 2007 23:16:51 +0000
From:	Pavel Machek <pavel@....cz>
To:	andi@...as.de
Cc:	davej@...emonkey.org.uk, kernel list <linux-kernel@...r.kernel.org>
Subject: Re: intel-agp PM experiences (was: 2.6.20-rc5: usb mouse breaks suspend to ram)

Hi!

> > > Especially the PCI video_state trick finally got me a working resume on
> > > 2.6.19-ck2 r128 Rage Mobility M4 AGP *WITH*(!) fully enabled and working
> > > (and keeping working!) DRI (3D).
> > 
> > Can we get whitelist entry for suspend.sf.net? s2ram from there can do
> > all the tricks you described, one letter per trick :-). We even got
> > PCI saving lately.
> 
> Whitelist? Let me blacklist it all the way to Timbuktu instead!

> I've been doing more testing, and X never managed to come back to working
> state without some of my couple intel-agp changes:
> - a proper suspend method, doing a proper pci_save_state()
>   or improved equivalent
> - a missing resume check for my i815 chipset
> - global cache flush in _configure
> - restoring AGP bridge PCI config space

Can you post a patch?

Whitelist entry would still be welcome.

> All in all intel-agp code semi-shattered my universe.
> I didn't expect to find all these issues in rather important core code
...
> Given the myriads of resume issues we experience in general,
> it may be wise to do something as simple as a code review of *all*

Any volunteers?
							Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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