Решил поставить Catalyst. Установил из AUR и следовал инструкциям. Х запустился, но появились артефакты. Вот еще
$ lspci | grep VGA
01:00.0 VGA compatible controller: ATI Technologies Inc M92 [Mobility Radeon HD 4500 Series]и
[quote=/etc/X11/xorg.conf]
Section "ServerLayout"
Identifier "aticonfig Layout"
Screen 0 "aticonfig-Screen[0]-0" 0 0
EndSection
Section "Module"
Load "drm"
Load "dri"
Load "dri2"
Load "extmod"
Load "dbe"
Load "glx"
Load "record"
EndSection
Section "Monitor"
Identifier "aticonfig-Monitor[0]-0"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
EndSection
Section "Device"
Identifier "aticonfig-Device[0]-0"
Driver "fglrx"
BusID "PCI:1:0:0"
Option "AccelMethod" "exa"
Option "DRI" "on"
Option "AGPMode" "4"
Option "ColorTiling" "on"
Option "EnablePageFlip" "on"
Option "AGPFastWrite" "yes"
Option "EXAVSync" "yes"
EndSection
Section "Screen"
Identifier "aticonfig-Screen[0]-0"
Device "aticonfig-Device[0]-0"
Monitor "aticonfig-Monitor[0]-0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection
[/quote]
