when comparing dmesg outputs of -22 vs. -23 (and also checking the changelog) I noticed that the radeon drm module was updated; maybe that causes the regression on my hardware:
-Linux version 2.6.15-22-powerpc (buildd@ross) (gcc version 4.0.3 (Ubuntu 4.0.3-1ubuntu5)) #1 Sun May 7 15:47:39 UTC 2006
+Linux version 2.6.15-23-powerpc (buildd@ross) (gcc version 4.0.3 (Ubuntu 4.0.3-1ubuntu5)) #1 Thu May 18 16:41:05 UTC 2006
[..]
-[drm] Initialized drm 1.0.0 20040925
-[drm] Initialized radeon 1.19.0 20050911 on minor 0:
+[drm] Initialized drm 1.0.1 20051102
+[drm] Initialized radeon 1.24.0 20060225 on minor 0
agpgart: Putting AGP V2 device at 0000:00:0b.0 into 1x mode
agpgart: Putting AGP V2 device at 0000:00:10.0 into 1x mode
+[drm] Setting GART location based on old memory map
[drm] Loading R300 Microcode
+[drm] writeback test succeeded in 1 usecs
when comparing dmesg outputs of -22 vs. -23 (and also checking the changelog) I noticed that the radeon drm module was updated; maybe that causes the regression on my hardware:
-Linux version 2.6.15-22-powerpc (buildd@ross) (gcc version 4.0.3 (Ubuntu 4.0.3-1ubuntu5)) #1 Sun May 7 15:47:39 UTC 2006
+Linux version 2.6.15-23-powerpc (buildd@ross) (gcc version 4.0.3 (Ubuntu 4.0.3-1ubuntu5)) #1 Thu May 18 16:41:05 UTC 2006
[..]
-[drm] Initialized drm 1.0.0 20040925
-[drm] Initialized radeon 1.19.0 20050911 on minor 0:
+[drm] Initialized drm 1.0.1 20051102
+[drm] Initialized radeon 1.24.0 20060225 on minor 0
agpgart: Putting AGP V2 device at 0000:00:0b.0 into 1x mode
agpgart: Putting AGP V2 device at 0000:00:10.0 into 1x mode
+[drm] Setting GART location based on old memory map
[drm] Loading R300 Microcode
+[drm] writeback test succeeded in 1 usecs