DRI_PRIME doesnt work

Question

I have a HP G6-2251ST(7420g+7670m). Im following the procedure below to make my 7670m work but performance seems to stay same. Here is what ive done;

xrandr --listproviders 
Providers: number : 3
Provider 0: id: 0x7c cap: 0x9, Source Output, Sink Offload crtcs: 4 outputs: 3 associated providers: 2 name:radeon
Provider 1: id: 0x45 cap: 0x6, Sink Output, Source Offload crtcs: 6 outputs: 0 associated providers: 2 name:radeon
Provider 2: id: 0x45 cap: 0x6, Sink Output, Source Offload crtcs: 6 outputs: 0 associated providers: 2 name:radeon



xrandr --setprovideroffloadsink 1 0


DRI_PRIME=1 steam steam://rungameid/240

Answer 1

I seem to have a similar setup, and it is working for me. Can you perhaps try this one?

xrandr --setprovideroffloadsink 0x45 0x7c

In order to see whether it actually works it can be interesting to use something else than steam, like glxgears.

glxgears
DRI_PRIME=1 glxgears

The latter should show a higher fps in the console than the first. For me it is 60 FPS compared to 3995 (???) FPS.

On a side note, DRI_PRIME is great, but does not really work well with the fancy compositors like the one used by Ubuntu Unity. I installed xfce, which I log in to for gaming only, as that works way better. But first try to get steam working on your dedicated GPU :)

Answer 2

vblank_mode=0 should unlock your FPS in game.