Hello, I installed yesterday on my laptop the last version of Fedora with 3.12.8 kernel. However I discover that the discrete GPU (NVIDIA GT520M) remain always on, reducing battery performance. I tried to switch it off but seem that vgaswitcheroo doesn't work on it. How can I solve this problem? here some commands:
[root@Fedora20 ~]# lspci | grep VGA 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 01:00.0 VGA compatible controller: NVIDIA Corporation GF119M [GeForce GT 520M] (rev a1) [root@Fedora20 ~]# cat /sys/kernel/debug/vgaswitcheroo/switch 0:IGD:+:Pwr:0000:00:02.0 1:DIS: :DynPwr:0000:01:00.0 [root@Fedora20 ~]# echo OFF > /sys/kernel/debug/vgaswitcheroo/switch [root@Fedora20 ~]# cat /sys/kernel/debug/vgaswitcheroo/switch 0:IGD:+:Pwr:0000:00:02.0 1:DIS: :DynPwr:0000:01:00.0 [root@Fedora20 ~]# uname -a Linux Fedora20 3.12.8-300.fc20.x86_64 #1 SMP Thu Jan 16 01:07:50 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux Thank you very much C. -- http://www.2dd.it
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