From: John Harrigan <jfharrigan@fedex.com>
To: intel-gfx@lists.freedesktop.org
Subject: Re: slow graphics after Suspend to RAM
Date: Wed, 13 Apr 2011 07:11:13 -0600 [thread overview]
Message-ID: <20110413131113.GA2370@2530p.rmtc.fedex.com> (raw)
In-Reply-To: <1bdc18$jt7ta9@fmsmga002.fm.intel.com>
* chris@chris-wilson.co.uk (Mar 17, 2011 @ 07:51+0000):
> On Wed, 16 Mar 2011 17:59:20 -0600, John Harrigan <jfharrigan@fedex.com> wrote:
> > I have a Lenovo X201 laptop with an i7-620M processor. After I resume
> > from a Suspend to RAM the graphics are very slow. Suspend to Disk does
> > not cause the same problem and doing a Suspend to Disk after a Suspend
> > to RAM fixes the problem.
>
> Known problem. The PAT lose the WC bits for the GTT aperture on resume.
> There is a workaround that we can do: recreate the ioremapping upon
> resume. (But the root cause is not a gfx driver bug.)
I've opened a bug against memory management for this.
https://bugzilla.kernel.org/show_bug.cgi?id=31372
Chris, I tried to add you as a copy but I may not have done it
correctly. Could you take a look to see if there's anything
else that could be added? Thanks.
next prev parent reply other threads:[~2011-04-13 13:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-16 23:59 slow graphics after Suspend to RAM John Harrigan
2011-03-17 7:51 ` Chris Wilson
2011-03-17 15:32 ` John Harrigan
2011-04-13 13:11 ` John Harrigan [this message]
2011-03-18 18:44 ` Tino Keitel
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