linux-kernel - Re: 4.1-rc7: Xorg broken after resume on thinkpad T40p, radeon problem?

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Message-ID: <20150617141052.GA30910@amd>
Date:	Wed, 17 Jun 2015 16:10:52 +0200
From:	Pavel Machek <pavel@....cz>
To:	Paul Bolle <pebolle@...cali.nl>
Cc:	Christian König <christian.koenig@....com>,
	dri-devel@...ts.freedesktop.org, alexander.deucher@....com,
	rjw@...ysocki.net, lenb@...nel.org,
	kernel list <linux-kernel@...r.kernel.org>,
	linux-acpi@...r.kernel.org, linux-pm@...r.kernel.org
Subject: Re: 4.1-rc7: Xorg broken after resume on thinkpad T40p, radeon
 problem?

Hi!

> > Unfortunately, not as far as I know.
> > 
> > > If yes it might be a good idea to bisect to narrow down the problem.
> > 
> > No such luck. I may try something like "3.0" if we are really
> > desperate (2.6.X kernels probably won't won't boot with recent
> > userland), but I suspect it just never worked.
> 
> 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!

								Pavel

-- 
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