From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 65811] AMD 7970M (PowerXpress) power management not functioning
properly when using Xrandr to offload rendering
Date: Tue, 26 Nov 2013 21:15:02 +0000
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https://bugzilla.kernel.org/show_bug.cgi?id=65811
--- Comment #7 from Jack ---
running the kernel with radeon.runpm=0 allows me to successfully disable the
discrete card with `echo OFF > /sys/kernel/debug/vgaswitcheroo/switch`
[root@localhost linux-git]# cat /sys/kernel/debug/vgaswitcheroo/switch
0:DIS: :Off:0000:01:00.0
1:IGD:+:Pwr:0000:00:02.0
[root@localhost linux-git]#
I should have more tests (and some logs) later this evening -- didn't have a
clone of the kernel repo and 5mbps internet at the relatives makes for a
lengthy download ;P
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