Comment 39 for bug 750259

@Marius, thanks. Would you be willing to do some additional testing to help narrow down what patch in that kernel provides the fix? If you do, then there is a chance we can get that patch added to the kernel in an SRU.

Directions on isolating kernel patches via git bisection are documented at https://wiki.ubuntu.com/Kernel/KernelBisection. Report back here if you can narrow it down to a particular git commit id or range of commit ids.