Comment 33 for bug 1514052

Ok so I might have a bit of time to start this... in summary I have already on my machine kernel 3.19.0-31-generic (last good version before my update) kernel 4.2.0-17-generic (bad version installed with wily)

If I understand the basic process (from reading https://wiki.ubuntu.com/Kernel/KernelBisection) I am to clone git://kernel.ubuntu.com/ubuntu/ubuntu-wily.git and look for a bad commit prior to kernel version 4.2.0-17 and after kernel version 3.19.0

starting with something like:
git bisect start Ubuntu-4.2.0-17.20 Ubuntu-3.19.0-22.22

I am guessing from the bisect work done in https://bugzilla.kernel.org/show_bug.cgi?id=100121#c29 that this is likely to be near f989e55452c74b4f7b22c889b8ec9f1192aaeec4... but I will find out!