Xorg with ATI driver and Linux 2.6.25 (on Ultra 5)

[ludo@gnu.org (Ludovic Courtès)]

Hi,

The current Xorg and ATI driver appear to not work when used with
`linux-image-2.6.25-2-sparc64' on an Ultra 5:

  X.Org X Server 1.4.2
  Release Date: 11 June 2008
  X Protocol Version 11, Revision 0
  Build Operating System: Linux Debian (xorg-server 2:1.4.2-2)
  Current Operating System: Linux sabre 2.6.25-2-sparc64 #2 Mon Jul 14 20:07:15 UTC 2008 sparc64
  Build Date: 20 July 2008  04:49:01PM

          Before reporting problems, check http://wiki.x.org
          to make sure that you have the latest version.
  Module Loader present
  Markers: (--) probed, (**) from config file, (==) default setting,
          (++) from command line, (!!) notice, (II) informational,
          (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
  (==) Log file: "/var/log/Xorg.0.log", Time: Tue Jul 29 12:24:56 2008
  (==) Using config file: "/etc/X11/xorg.conf"
  (II) Module "i2c" already built-in
  (II) Module "ddc" already built-in
  (WW) ****INVALID MEM ALLOCATION**** b: 0xe1000000 e: 0xe1ffffff correcting
  (WW) ****INVALID MEM ALLOCATION**** b: 0xe2000000 e: 0xe2000fff correcting
  (EE) Screen(s) found, but none have a usable configuration.

`Xorg.0.log' also shows this right before the error itself:

  (II) Setting vga for screen 0.
  (**) MACH64(0): Depth 24, (--) framebuffer bpp 32
  (==) MACH64(0): Using XAA acceleration architecture
  (WW) MACH64: Mach64 in slot 1:2:0 could not be detected!
  (II) UnloadModule: "mach64"

The package versions are:

  xserver-xorg                       7.3+14
  xserver-xorg-video-ati             6.9.0-1+lenny1

Any hint?

Thanks,
Ludovic.