From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 65761] HD 7970M Hybrid - hangs and errors and rmmod causes crash
Date: Wed, 22 Jan 2014 01:53:00 +0000
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https://bugzilla.kernel.org/show_bug.cgi?id=65761
Hohahiu changed:
What |Removed |Added
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CC| |rakothedin@gmail.com
--- Comment #19 from Hohahiu ---
I have similar trouble with vgaswitcheroo. My GPUs are Intel hd4000 + Amd
mobility radeon 7750M:
/sbin/lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor
Graphics Controller (rev 09)
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Chelsea LP [Radeon HD 7730M] (rev ff)
If I don't set anything during the boot my dGPU is powered down successfully:
cat /sys/kernel/debug/vgaswitcheroo/switch
0:IGD:+:Pwr:0000:00:02.0
1:DIS: :DynOff:0000:01:00.0
But in the meantime:
xrandr --listproviders
Providers: number : 1
Provider 0: id: 0x4a cap: 0xb, Source Output, Sink Output, Sink Offload crtcs:
4 outputs: 7 associated providers: 0 name:Intel
So I cannot access my discrete GPU.
If after the boot I use
xrandr --setprovideroffloadsink radeon Intel
then dGPU never switches off.
Truly speaking runpm never worked for me even with Alex's early patches.
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