The fix mentioned in comment #11 is now in upstream v3.13-rc4. Can you test this kernel to confirm if this fixes the bug or not:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.13-rc4-trusty/
The fix mentioned in comment #11 is now in upstream v3.13-rc4. Can you test this kernel to confirm if this fixes the bug or not:
http:// kernel. ubuntu. com/~kernel- ppa/mainline/ v3.13-rc4- trusty/