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From: Paul Bolle <pebolle@tiscali.nl>
To: Pavel Machek <pavel@ucw.cz>
Cc: "Christian König" <christian.koenig@amd.com>,
	dri-devel@lists.freedesktop.org, alexander.deucher@amd.com,
	rjw@rjwysocki.net, lenb@kernel.org,
	"kernel list" <linux-kernel@vger.kernel.org>,
	linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org
Subject: Re: 4.1-rc7: Xorg broken after resume on thinkpad T40p, radeon problem?
Date: Wed, 17 Jun 2015 16:22:58 +0200	[thread overview]
Message-ID: <1434550978.2400.13.camel@x220> (raw)
In-Reply-To: <20150617141052.GA30910@amd>

On Wed, 2015-06-17 at 16:10 +0200, Pavel Machek wrote: 
> > The above looks very much like the issue that made me write commit
> > 45171002b01b ("radeon: add AGPMode 1 quirk for RV250"). See
> > https://bugzilla.redhat.com/show_bug.cgi?id=531825 for a lot of
> > background.
> > 
> > Does booting with radeon.agpmode=1 survive a suspend and resume cycle?
> 
> Yes, that option helps. Thanks!

Then I suggest you add another quirk for your T40p (after testing
agpmode 2 also). Because this all seems to be caused by a broken BIOS,
and/or broken AGP thingy, and/or broken RV250 (or the interaction of
these things or whatever). Maddening stuff, impossible to debug.

Good luck,


Paul Bolle


      reply	other threads:[~2015-06-17 14:22 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-17 12:43 4.1-rc7: Xorg broken after resume on thinkpad T40p, radeon problem? Pavel Machek
2015-06-17 12:49 ` Pavel Machek
2015-06-17 13:07   ` Christian König
2015-06-17 13:21     ` Pavel Machek
2015-06-17 13:31       ` Christian König
2015-06-17 13:50       ` Paul Bolle
2015-06-17 14:10         ` Pavel Machek
2015-06-17 14:22           ` Paul Bolle [this message]

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