[ltp] Re: Confusion about Xorg drivers

Martin Gramatke linux-thinkpad@linux-thinkpad.org
Sat, 11 Dec 2004 12:04:45 +0100


I propose to use there kernel 2.6 and xfree drivers.

Make sure you selected the correct AGPGART driver in your kernel config and
the ATI radeon DRI driver. The AGP driver should fit to your mainboard not
your graphics card, not ATI.

DRI is described here:
If these drivers support your models 3D acceleration, you will learn here
(they do):

The Xfree/Xorg config options are described here:

Here is a snippet from my xorg.conf:
Section "Module"
    Load        "dbe"
    Load        "extmod"
    #SubSection  "extmod"
    #    Option  "omit xfree86-dga"
    Load        "freetype"
    #Load        "speedo"
    Load        "glx"
    Load        "dri"
Section "Device"
    Identifier  "Card1"
    Driver      "radeon"
    Option      "AGPMode"        "4"
    Option      "AGPFastWrite"   "on"
    Option      "DDCMode"        "on"
    Option      "MonitorLayout"  "LVDS,TMDS"
    Option      "CloneMode"      "1280x1024"
    #Option      "EnablePageFlip" "on"

Check your xfree/xorg log files in /var/log to see if everything is well.
glxinfo gives you additional information: "direct rendering: Yes". glxgears
delivers some interesting benchmark numbers. I have a radeon 9250 here with
only 750fps. What do you get?


John Locke wrote:

> Hello,
> I have a T41, with a Radeon Mobility 9000 card. I'm running Mandrake
> 10.1 (actually still on the Community version). By running glxgears, I'm
> getting 140 fps.
> I've made tweaks in my XF86config file in the past, on my old Toshiba,
> and managed to get XFree86 to work dual head, but I really get lost in
> these configurations. At that time, I learned a bit about Nvidia
> drivers, enough to get it going, but now with ATI I'm totally lost. I
> don't care much about 3d performance or anything, but here's what I want
> to be able to do:
> * Run multimonitor, preferably being able to use xrandr and being able
> to turn the external monitor on and off without restarting X. Right now,
> my LCD is 1400x1050, but my external monitor is a 1024x768 flat panel.
> * I would like to be able to stretch my desktop across to the other
> screen, side by side, as well as hook up an external projector for
> presentations.
> * I would also like to be able to plug my TV into the S-Video port and
> output media to my TV.
> * Finally, I'd like to enable the DRI extension so that I can get
> full-screen out of VMWare.
> I've seen lots of pages with different How-tos to do much of this, but
> I'm stuck with choosing a driver and getting the proper modelines--there
> appear to be at least 3 different drivers for this card available in my
> distribution, and I really haven't had time to dig through all these
> issues.
> Is there any quick summary of the available drivers for this card
> somewhere that can get me going? Anybody happen to have an xorg.conf
> file that matches my needs?
> Thanks for your help!
> Cheers,