Hey, thanks! This worked on my ThinkPad X60 as well.
I have a T61 and an X60, both running GNOME 3 under Ubuntu GNU/Linux, and I had the same issue -- the volume keys worked as expected on the T61, but not on the X60 (same issue as you described, I think -- though I didn't do a detailed analysis with xev and the like). Your solution for the T60 works for the X60 as well, it seems (I haven't reboot the machine yet either).
That's been bugging me for months. Thanks!
Andrew E, Bradley M. Kuhn likes this.
I'm glad this helped someone. That's exactly why I write blog posts like that; mainly, expecting that search engines will index all those terms I was looking for together and make my post the first hit for the next person who has the problem.
But a more direct outcome to help someone is wonderful, too! :)
Bradley M. Kuhn at 2014-06-08T23:24:11Z
Blaise Alleyne likes this.