My laptop is acer 4745g, i have just installed ubuntu 14.04 gnome daily-build. The installation process is all right. Acer 4745g have ATI HD5650 and Intel chip, I think hybrid GPU is muxed. I want to turn on the integrated chip and turn off the discrete. I follow the steps in https://help.ubuntu.com/community/HybridGraphics using vga_switcheroo.
Code:
echo ON > /sys/kernel/debug/vgaswitcheroo/switch
Turns on the GPU that is disconnected (not currently driving outputs), but does not switch outputs.
Code:
echo IGD > /sys/kernel/debug/vgaswitcheroo/switch
Connects integrated graphics with outputs.
Code:
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
Turns off the graphics card that is currently disconnected.
So i want to check the status of the vga chip:
Code:
cat /sys/kernel/debug/vgaswitcheroo/switch
this is the output:
HTML Code:
0:DIS: :DynPwr:0000:01:00.0
1:IGD:+:Pwr:0000:00:02.0
2:DIS-Audio: :Pwr:0000:01:00.1
I see Pwr in both IGD and DIS, so i don't know if i turn of the DIS graphics?
any helps?