Bug#620858: xserver-xorg-video-radeon: slow overall performance upon wake-up from suspend

[Andres Cimmarusti]

>> [ 2183.658014] [drm] radeon: 1 quad pipes, 1 z pipes initialized.
>
> The kernel radeon driver isn't consistently reporting the number of quad
> pipes. Does the slowness correspond to the number being reported as 1?

I've just checked this. Yes, it's slow when the number is reported as
1 (which happens both waking up from suspend, and when using
vblank_mod=0).

Thanks for looking into this.

Andres