Thinkpad A22p/Improper Video on Install

Robert G. (Doc) Savage dsavage at
Tue Jul 27 13:23:49 UTC 2010

On Mon, 2010-07-26 at 20:21 -0700, James McKenzie wrote:
> I'm trying to install FC8 on my old, creaky Thinkpad A22p (ATI Rage 
> Mobility Rage 3) and the video from the graphical installer is not 
> correct.  I get about 1/3 of the orginal screen, then 1/3 of the third 
> 1/3 of  screen followed by that 1/3 again.
> If I use the text installer, X will not start when running the first 
> time after installing.
> James McKenzie
> (And a big thank you to the wiki documentation team.  I read through and 
> used the archives to see if this had been answered before posting!)


My A22p has the same problem. I have had to use the basic (VESA) video
driver whenever installing Fedora. A couple of weeks ago I finally found
the 'gtf' utility which computed the required modeline. I wrote a custom
xorg.conf file for Fedora 13. If Fedora 8 uses xorg (I don't remember),
it should work for you.

--Doc Savage
  Fairview Heights, IL

$ cat /etc/X11/xorg.conf
Section "Device"
        Identifier "Videocard0"
        Driver  "r128"

Section "Monitor"
        Identifier      "Monitor0"
        VendorName      "IBM"
        ModelName       "Thinkpad A22p"
        DisplaySize     305 229
        # 1600x1200 @ 60.00 Hz (GTF) hsync: 74.52 kHz; pclk: 160.96 MHz
        Modeline "1600x1200 60.00"  160.96  1600 1704 1880 2160  1200 1201 1204 1242  -HSync +Vsync

Section "Screen"
        Identifier      "Screen"
        Device          "Videocard0"
        Monitor         "Monitor0"
        Subsection      "Display"
                Viewport        0 0
                Depth           24
                Modes           "1600x1200"

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