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Before I updated from 13.10 to 14.04, vga switcheroo worked fine, using the free radeon-driver. Now vga switcheroo doesn't work anymore/doesn't take effect:

cat /sys/kernel/debug/vgaswitcheroo/switch
0:IGD:+:Pwr:0000:00:02.0 1:DIS: :DynPwr:0000:01:00.0 2:DIS-Audio: :Pwr:0000:01:00.1

after trying to turn off the unused discrete graphic:

echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
cat /sys/kernel/debug/vgaswitcheroo/switch
0:IGD:+:Pwr:0000:00:02.0 1:DIS: :DynPwr:0000:01:00.0 2:DIS-Audio: :Pwr:0000:01:00.1

Is there anyone with the same isue or was anyone able to use vga switcheroo on Ubuntu 14.04?

Thanks

Jacob Vlijm
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seebast
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  • possible duplicate of [How can I disable ATI discrete graphic GPU at startup in Ubuntu 14.04 without BIOS?](http://askubuntu.com/questions/450410/how-can-i-disable-ati-discrete-graphic-gpu-at-startup-in-ubuntu-14-04-without-bi) – bain May 28 '14 at 14:21

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