After a long time without crashes on Tumbleweed, I wanted to p=
repare a test
setup for valve mesa built with ACO. So I installed Ubuntu Budgie 18.04 LTS
with hardware enablement stack and I noticed the OS freezes are now back, e=
ven
on the RadeonVII.=20

What I noticed in the game behavior is this. This is a game running on
crossover (wine) with DX11 and DXVK. I want to point out that I do alt-tab =
out
of games to do other things, so this might be a factor to consider. But aga=
in,
I do the same on my NVIDIA-GPU laptop and I never had a single freeze or fps
drop.
Not sure if point 2 and 3 are related, I just wanted to share my observatio=
ns.

1. Game starts with excellent FPS. I can hear GPU fans spinning.
2. After a while, game loses a lot of FPS starts to become slow and sluggis=
h,
GPU seems to be no longer doing much and I can no longer hear the fans
spinning.
3. After a while longer, the whole OS freezes as described in my first post.

What I am going to do next:
1. Use the workaround of comment #=
47 and test for a few days.
2. Install Valve mesa-aco with ubuntu PPA and test (without workarounds) fo=
r a
few days.

I will report back when I have more details on my tests.

System info:
OS: Ubuntu 18.04.2 LTS x86_64=20
Kernel: 5.0.0-21-generic
Resolution: 3440x1440
CPU: AMD Ryzen 7 2700X (16) @ 3.700G=20
GPU: AMD Vega 20=20
Memory: 2650MiB / 64398MiB
OpenGL version string: 4.5 (Compatibility Profile) Mesa 19.0.2