ubuntu-x-swat team mailing list archive

[Saint Aardvark <aardvark@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>]

I believe I encountered the same problem on a Dell Inspiron 1440 laptop
after upgrading from Jaunty to Karmic:  rendering was unbearably slow,
the error messages about DRM in Xorg.0.log were the same, and the
/dev/dri directory did not exist.

Upgrading the kernel to linux-image-2.6.31-16-generic made the problem
go away; performance was fine, /dev/dri/card0 showed up, and Xorg.0.log
showed DRI2 was enabled.  Please let me know if you'd like more
information; I've still got the old kernel around, so I can get
debugging info if needed.

-- 
[i845] DRM fails to become master, results in (extremely) slow software rasterization
https://bugs.launchpad.net/bugs/446641
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