I tried the following kernels:
- 4.4.3: no problem, resume after suspend works
- 4.4.4: impossible to boot on the OS
- 4.4.5: bug of this report (system frozen after reboot) is reproduced
I did a commit bissect between 4.4.3 and 4.4.5, and I observed either:
- no problem, resume after suspend works (git bisect good)
- or impossible to boot on the OS (git bisect bad)
At the end I got the following commit:
[b8b1ad305f8de05b241a57707d5b3de3692dbdfa] drm/amdgpu: don't load MEC2 on topaz
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1589379
Title:
System frozen after resume, on Ubuntu 16.04 kernel 4.4.0-22
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