Comment 83 for bug 1573959

I was affected by this issue in 16.04 with kernel 4.4 but it seems to have gone away since upgrading to 4.8; it's hard to tell because it is apparently impossible to reproduce on demand, and only happened maybe 1 in 10 times for me after resuming from suspend.

@kyordhel: I am not sure that specific package is enough to fully install kernel 4.8; you should try installing the linux-generic-hwe-16.04 package which will give you the latest 4.8 kernel plus all necessary dependencies - for example if you did not install linux-image-extra-4.8.0-29-generic you may well be missing some modules that are required for decent desktop performance.