linux-kernel - OOPS with switcheroo and nouveau

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Message-ID: <20795.13818.354694.375448@elektron.ikp.physik.tu-darmstadt.de>
Date:	Sat, 9 Mar 2013 14:15:38 +0100
From:	Uwe Bonnes <bon@...ktron.ikp.physik.tu-darmstadt.de>
To:	linux-kernel@...r.kernel.org
Subject: OOPS with switcheroo and nouveau

Hello,

looking for a possible reason for the higher power drain of recent kernels,
as reported in a recent post, I did on my Thinkpad T520 with Opensuse 12.2
and kernel-of-the-day 3.8.2-2-vanilla with
01:00.0 VGA compatible controller: NVIDIA Corporation GF119 [Quadro NVS4200M] (rev a1)

> echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
> rmmod nouveau

This resulted in the rmmod command hanging.

Doing in another console

> echo ON > /sys/kernel/debug/vgaswitcheroo/switch

resulted in a OOPS. I captured the backtrace by photo and can type in
errorprone and send the backtrace on request.

Bye
-- 
Uwe Bonnes                bon@...ktron.ikp.physik.tu-darmstadt.de

Institut fuer Kernphysik  Schlossgartenstrasse 9  64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
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