When I was installing the kernel it complained about possibly missing firmware 
files for amdgpu.
Then it failed first but I blacklisted amdgpu module and it booted.

Then I tried to install amdgpu-pro but that couldn't compile the module
since it doesnt support 4.11. But I think it may have installed some
firmware files and I could load the amdgpu module after boot.

But, then I decided to try to disable amdgpu for 4.8 (worst idea ever!).
Apparently everytime I boot 4.8, it destroys something from the hard
drive. It somehow managed to loose /var/lib/dpkg first but after few
reboots, completely lost the whole partition and even grub didnt start.
I am never putting 4.8 again!

So, for now, I can't really test anything anymore since ubuntu self-
destructed itself. Luckily windows and freebsd are still working. Maybe
I wait for Zesty before re-installing.

About 4.11 kernel:

I can tell that at last the basic keyboard was working in Linux/Ubuntu.
Because with 4.4 it was skipping keypresses.

The touchpad was much better, but still somewhat strange. Things like
double tap and two-finger scrolling didn't work. At least mouse cursor
was not jumping around randomly from time to time.

The WIFI didn't work, I had to install rtlwifi_new driver from github.

The hard drive was super slow, maybe even slower than before. I saw
0.6mbyte/s performance when I ran sysbench.

The CPU fan was going full speed and laptop got hot. (least of my
worries but it happened...)

I would like to help more but I don't know what I can do at this stage.
I am not even sure why amdgpu module was loaded, because the APU has sea
islands gpu, I thought this was disabled by default? Did this change in
4.11?

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https://bugs.launchpad.net/bugs/1670624

Title:
  Official 16.04 HWE 4.8 kernels do not boot (4.4 was booting)

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