https://bugs.freedesktop.org/show_bug.cgi?id=107213
--- Comment #4 from Shmerl shtetldik@gmail.com --- Still a problem with kernel 4.18.5 and latest firmware for Vega (20180825).
Except now, the session doesn't crash but just hangs with black screen.
Similar dmesg can be seen:
[ 162.743804] [drm:generic_reg_wait [amdgpu]] *ERROR* REG_WAIT timeout 10us * 3500 tries - dce_mi_free_dmif line:636 [ 162.743830] WARNING: CPU: 6 PID: 1575 at /build/linux-ETX4PU/linux-4.18.5/drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:254 generic_reg_wait+0xe8/0x160 [amdgpu]