Desktop effects do not work because of software rendering

[Sergey V. Udaltsov]

Binary package hint: xorg

When I am trying to run compiz manually, it complains about fatal error: software rendering.

In Xorg.0.log I see
(WW) RADEON(0): Direct rendering disabled

But, strange enough, glxinfo says
direct rendering: Yes

Most probably Xorg.0.log is right, because the display is somewhat slow and desktop effects cannot be enabled.

In 9.10 everything was fine.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xorg 1:7.5+5ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-21.32-powerpc64-smp 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-powerpc64-smp ppc64
Architecture: powerpc
Date: Sat Apr 17 23:51:33 2010
DkmsStatus: Error: [Errno 2] No such file or directory
ProcCmdLine: root=/dev/sda3 ro ramdisk_size=8192 quiet splash
ProcEnviron:
 LANGUAGE=en_IE:en
 PATH=(custom, no user)
 LANG=en_IE.UTF-8
 SHELL=/bin/bash
RelatedPackageVersions:
 xserver-xorg 1:7.5+5ubuntu1
 libgl1-mesa-glx 7.7.1-1ubuntu2
 libdrm2 2.4.18-1ubuntu3
 xserver-xorg-video-ati 1:6.13.0-1ubuntu5
 xserver-xorg-video-nouveau N/A
SourcePackage: xorg
Symptom: display
system:
 distro: Ubuntu
 codename: lucid
 architecture: ppc64
 kernel: 2.6.32-21-powerpc64-smp

[Sergey V. Udaltsov (sergey-udaltsov)]

Any progress on this one? Any diagnostics I could run? Any workarounds?

Without HW acceleration using the resolution 1.9K is a bit slow :( I do not mention inability to run compiz and gnome-shell...

[Sergey V. Udaltsov (sergey-udaltsov)]

FWIW, the situation did not change in 10.10. Anything I could help with?

[Sergey V. Udaltsov (sergey-udaltsov)]

Setting radeon.modeset=0 in yaboot.conf actually helps! Desktop effects are back!