Preparing:
1. install Fedora 27.
https://d=
ownload.fedoraproject.org/pub/fedora/linux/releases/27/Workstation/x86_64/i=
so/Fedora-Workstation-Live-x86_64-27-1.6.iso
2. install latest MESA and LLVM
https://copr.=
fedorainfracloud.org/coprs/che/mesa/
3. build and install staging kernel with latest amdgpu driver
$ git clone git://people.freedesktop.org/~agd5f/linux --branch
amd-staging-drm-next
$ cd linux
$ make clean && make bzImage && make module
# make modules_install && make install
Reproducing issue:
1. Launch any browser (I checked on Firefox and Opera)
2. Open h=
ttp://www.graphicsfuzz.com/benchmark/android-v1.html
3. Press Go
4. Wait when reached shader15 test
Symptoms:
1. The system stop to respod.
2. All the LEDs on the video card showing the load start to glow.
3. The turbine on the video card starts to make a lot of noise.
In dmesg appears follow lines:
[drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring gfx timeout, last signaled
seq=3D71473, last emitted seq=3D71475
[drm] No hardware hang detected. Did some blocks stall?
If you are used Opera browser before would be added follow lines:
[drm:gfx_v9_0_priv_reg_irq [amdgpu]] *ERROR* Illegal register access in com=
mand
stream
[drm] No hardware hang detected. Did some blocks stall?