Update for those not following my other bug report (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1695989)
I found the bug in all the 4.11 and 4.10, but not 4.12rc1 or 4.12rc4.
NOTE - @Jochen - I dont see the FIFO underrun error while running the 4.12 kernel.
Update for those not following my other bug report (https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1695989)
I found the bug in all the 4.11 and 4.10, but not 4.12rc1 or 4.12rc4.
NOTE - @Jochen - I dont see the FIFO underrun error while running the 4.12 kernel.