Comment 33 for bug 507148

I installed the following from xorg-edgers:
libdrm2_2.4.17+git20100209.fdcde592-0ubuntu0sarvatt_i386.deb
libdrm-intel1_2.4.17+git20100209.fdcde592-0ubuntu0sarvatt_i386.deb
libdrm-nouveau1_2.4.17+git20100209.fdcde592-0ubuntu0sarvatt_i386.deb
libdrm-radeon1_2.4.17+git20100209.fdcde592-0ubuntu0sarvatt_i386.deb
libgl1-mesa-dri_7.8.0~git20100207.1a45c2bc-0ubuntu0sarvatt3_i386.deb
libgl1-mesa-glx_7.8.0~git20100207.1a45c2bc-0ubuntu0sarvatt3_i386.deb
libglu1-mesa_7.8.0~git20100207.1a45c2bc-0ubuntu0sarvatt3_i386.deb
radeontool_1.5+git+20091128-0ubuntu0tormod_i386.deb
xserver-common_2%3a1.7.4.902~git20100205+server-1.7-branch.85b04bb0-0ubuntu0sarvatt3_all.deb
xserver-xorg-core_2%3a1.7.4.902~git20100205+server-1.7-branch.85b04bb0-0ubuntu0sarvatt3_i386.deb
xserver-xorg-input-evdev_1%3a2.3.2+git20100121.e81cd935-0ubuntu0sarvatt_i386.deb
xserver-xorg-input-synaptics_1%3a1.2.0+git20100120.f7559a5e-0ubuntu0sarvatt_i386.deb
xserver-xorg-video-ati_1%3a6.12.99+git20100205.b7ca1ab1-0ubuntu0sarvatt_i386.deb
xserver-xorg-video-intel_2%3a2.10.0+git20100209.41784e15-0ubuntu0sarvatt_i386.deb
xserver-xorg-video-radeon_1%3a6.12.99+git20100205.b7ca1ab1-0ubuntu0sarvatt_i386.deb
xserver-xorg-video-vesa_1%3a2.3.0~git20100120.069c1f82-0ubuntu0sarvatt2_i386.deb

I tried using 2.6.33-rc7 from the Ubuntu kernel dailies. This kernel was very slow (unrelated to this bug-- it seemed to be IO or possibly filesystem related).

I then tried the backported radeon fixes for the Ubuntu Lucid kernel as mentioned in the Launchpad bug:
"can someone one please test the kernel in the link below and report results back here ? http://people.ubuntu.com/~manjo/lp507148-lucid/
This kernel has the radeon fixes that might fix this issue."

Using KMS/EXA/compiz, this kernel did not crash compiz nearly as quickly on my T42, but after prolonged usage compiz crashed with this in dmesg:

[15040.618564] [drm:radeon_object_busy_domain] *ERROR* radeon: failed to reserve object for waiting.
[16936.764884] [TTM] Failed moving buffer. Proposed placement 0x00060004
[16936.764891] [TTM] Out of aperture space or DRM memory quota.
[16936.764895] [drm:radeon_object_list_validate] *ERROR* radeon: failed to validate.
[16936.764898] [drm:radeon_cs_ioctl] *ERROR* Failed to parse relocation !
[17015.483860] Unpin not necessary for d095f600 !

Using plymouth with KMS results in a system lockup very early during boot (with no output that I could see).

Marc Deslauriers mentioned in the Launchpad bug that his T30 (16MB of video ram as opposed to my 32MB) did not show any significant improvement with the xorg-edgers packages and backported radeon fixes.

I might also mention that connecting my T42 to an external 1680x1050 monitor (my LCD is 1400x1050) would make compiz crash readily when using xrandr.