Comment 8 for bug 311781

Strange, I'm pretty sure stock Karmic is working on my T500 just fine. I'm running a prerelease though, I'll install the final version in a week or two and report back if it's still broken.

Bertoldo, does the workaround linked above work for you? Here's one description: https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.22/+bug/111089/comments/15