Comment 18 for bug 1504909

Felix Matouschek, the next step is to fully commit bisect from kernel 3.19.x where this problem didn't occur to 3.19.0-30 in order to identify the last good kernel commit, followed immediately by the first bad one. This will allow for a more expedited analysis of the root cause of your issue. Could you please do this following https://wiki.ubuntu.com/Kernel/KernelBisection ?

Please note, finding adjacent kernel versions is not fully commit bisecting.

Thank you for your understanding.

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