I can confirm this. I also find the behaviour iritating. As an additional bug I have the problem that the volume bar decreases faster than it should and increases slower than it should. That means that if you decrease the volume the bar is at 0% even when there is still sound to hear. Press "Volume Down" again a few times and the sound is *really* muted. Same thing about "Volume Up". When the voule is at its loudest the bar is only at 50%.
I have an IBM ThinkPad R40 2722-CDG but I could also reproduce this problem on an R50 of a friend of mine. ** Changed in: Ubuntu Status: Unconfirmed => Confirmed -- Wrong handling of volume buttons on IBM Thinkpad notebooks https://launchpad.net/bugs/51537 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs