From: Volker Braun <vbraun@physics.upenn.edu>
To: Antti Andreimann <Antti.Andreimann@mail.ee>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Trying to fix radeonfb suspending on IBM Thinkpad T41
Date: Sat, 22 Jan 2005 23:33:09 -0500 [thread overview]
Message-ID: <1106454789.8309.14.camel@localhost.localdomain> (raw)
In-Reply-To: <1106450704.10594.52.camel@localhost.localdomain>
I have no knowledge of the internals of the radeon family, but I am
under the impression that they require some hacks to work around bugs in
the silicon. There is a rather big patch coming, see
http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.11-
rc1/2.6.11-rc1-mm2/broken-out/radeonfb-massive-update-of-pm-code.patch
This patch also rewrites the questionable section in
radeon_pm_setup_for_suspend. I just found it and have not yet built a
new kernel, so I cannot comment on its effectiveness.
For reference, the power management issues of the T41 have their own
bugzilla entry:
http://bugme.osdl.org/show_bug.cgi?id=3022
On a side note, since kernel 2.6.10 I have not been able to successfully
resume from acpi S3 + radeonfb any more (T41 2379-DJU, radeon mobility
M9) - works under 2.6.9 and 2.6.11-rc1 + vgaconsole. I'm still trying to
isolate the problem/waiting for some of the pm code to settle.
Best,
Volker
next prev parent reply other threads:[~2005-01-23 4:34 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-23 3:25 Antti Andreimann
2005-01-23 4:33 ` Volker Braun [this message]
2005-01-23 21:54 ` Volker Braun
2005-01-24 0:54 ` Antti Andreimann
[not found] ` <1106537779.5069.2.camel@localhost.localdomain>
[not found] ` <1106552017.17621.13.camel@localhost.localdomain>
[not found] ` <1106600491.14176.21.camel@carrot.hep.upenn.edu>
2005-01-24 22:12 ` Antti Andreimann
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