Notebook: Schenker P502 (Clevo-derivative), Ivy-Bridge with intel HD 4000 graphics
The Bios neither allows me to disable the dedicated GPU nor to select the default one.
I just figured out that if I go to "/sys/class/drm/card0/device" I do not have entries shown like
I always tried to set the power-profiles _before_ disabling the GPU.
Sending "OFF" or "DDIS" to "/sys/kernel/debug/vgaswitcheroo/switch" works, in the first case the fan is slowing down and no heat is produced, but the fan isnt turned off completly (like e.g. under windows).. if I turn it one with "DDIS" it is like after a fresh boot with full fan and heat generation..