I've tested linux-image-3.19.0-29-generic version 3.19.0-29.31~lp1500751Commit0ed67cf1 and it has the bug too.
I've tested linux-image- 3.19.0- 29-generic version 3.19.0- 29.31~lp1500751 Commit0ed67cf1 and it has the bug too.