Not reproducible anymore with all the latest updates applied. Future
regression testing isn't possible either due to hardware change. It's
fair to close this.
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Tried your suggestion, but it didn't help so far. Latest kernel still
can't have gnome started, while 5.0 HWE kernel produced result similar
to previous ones.
I have verified that environment variable was set successfully:
$ printenv | grep -i amd_debug
AMD_DEBUG=nodcc
syslog:
Tested with latest mainline kernel and gnome is failing to start with
similar issue.
kernel: [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring gfx timeout, signaled
seq=1, emitted seq=3
kernel: [drm:amdgpu_job_timedout [amdgpu]] *ERROR* Process information: process
gnome-shell pid 2210 thread
** Summary changed:
- System lock-up with VMC page fault since HWE kernel update.
+ System locks up with VMC page fault on Ryzen 2400G and HWE kernel 5.0.
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Public bug reported:
Since kernel 5.0 rolled out through HWE last week my system is
consistently locking up upon launch of Steam or 3D applications in WINE.
Typical log: https://paste.ubuntu.com/p/WhPYXdkZVw/
Worked around by using pre-update 4.18 kernel.
ProblemType: Bug
DistroRelease: Ubuntu
