[Dri-users] IGP DDX bug in DRI

[Kevin Z. <kv...@co...>]

Before installint dri drivers to a clean Xorg build, switching 
resolutions from 1024x768 (default) to lower works fine.
But after dri drivers are installed, switching to lower res causes 
screen distortion ( the right-hand margin of the screen has some garbage 
and the normal display gets squeezed to the left).

So I consulted ajax in the IRC support  channel  and followed his 
suggestions to  build and install only the  Mesa  part. But then, "(WW) 
RADEON(0): Direct rendering not yet supported on IGP320/330/340/350, 
7000,9000 integrated chips" shows up in the log and of course DRI gets 
disabled.

Apparently, Xorg's DDX doesn't support IGP yet but has some bug fixes 
that the DRI DDX lacks.

Kevin Zhou