Comment 22 for bug 990129

Just to confirm: upgrade to a more recent kernel fixes the problem: 3.5 in my case.

For others arriving at this page wanting a quick fix, I suggest that using synaptic and the ppa may be easier than downloading the .deb files separately. Here's how:

http://www.upubuntu.com/2012/07/install-linux-kernel-35-from-ppa-on.html