Radeon vs radeonhd driver

Toufann Chaudhuri toufann at deckpoint.ch
Thu Jun 4 02:56:13 PDT 2009


I am just a "standard" user giving some return of experience (no
software or programming skills). I have Lenovo Thinkpad T60p with a
Mobility FireGL V5250 (chip ID 0x71d4 M56GL/M66). My linux distro is
Ubuntu 9.04 Jaunty Jackalope.

I have been reading that I should be using the radeonhd drivers.
However, I have been experiencing several issues, with suspend and
hibernate, and lockups (for instance when browsing with CoolIris) where
I have not choice but to hard reset the laptop.

Instead I tried to use the radeon driver and it does work fine. Suspend
works ok, and the framerate with glxgears is about 2000fps vs 1200 with
This is my Xorg.conf file

Section "Device"
	Identifier	"ATI Technologies Inc M56GL (Radeon Mobility FireGL V5250)"
	Driver		"radeon"
	Busid		"PCI:1:0:0"
	option 		"DRI" 		"on"
	Option      	"AccelMethod"   "EXA"  #either XAA or EXA
   	Option      	"AccelDFS"   	"true" #seemed to speed things up using
EXA acceleration
#   	Option      	"DynamicClocks" "on"   #like cpufreq's ondemand
function, throttles the gpu core and memory when idle 

Section "Module"
   #Load   "GLcore"
   Load   "bitmap"
   Load   "ddc"
   Load   "dbe"
   Load   "dri"
   Load   "extmod"
   Load   "freetype"
   Load   "glx"
   Load   "int10"
   Load   "type1"
   Load   "vbe"

Section "DRI"
#        Group       0
        Mode        0666

Section "Monitor"
	Identifier	"Configured Monitor"

Section "Screen"
	Identifier	"Default Screen"
	Monitor		"Configured Monitor"
	Device		"Configured Video Device"

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