Bug#542701: xserver-xorg-video-intel: Very slow 2D performance on one screen of dual display until after switch to console VT and back.

[Brice Goglin <Brice.Goglin@ens-lyon.org>]

Thomas E. Vaughan wrote:
> Package: xserver-xorg-video-intel
> Version: 2:2.8.0-2
> Severity: normal
>
>
> When the X server first starts up, 2D performance (such as
> painting the background, dragging a window, etc.) is nice
> and fast on my left monitor (VGA) but very slow on my right
> monitor (TMDS-1).
>   

What happens if you swap monitors' positions? Does the slowness follow TMDS?

By the way, it looks like you're getting a 3200x1200 virtual screen. It
may be larger 3D coordinates than what your board supports IIRC. Does it
help if you reduce both monitors' resolution to 1024x768 instead of
1600x1200 ?

Brice