Comment 6 for bug 1721856

> We can perform a reverse bisect to identify the commit that fixes this bug. We first need to identify the last bad kernel and first good one. Can you test the following two kernels:
>
> v4.11: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.11
> v4.12: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.12

I tested:

4.10.17 bad
4.12.0 bad
4.12.14 bad
4.13.1 good
4.13.3 good
4.13.5 good

Please instruct for the further bisection process. Thanks for your support so far.