Comment # 153 on bug 91880 from garththeisen@hotmail.com

I too have toggled my TPD switch (XFX R9 390) and continue to get black screen
freeze at non-deterministic times with a non-stressful workload. Running 4.11.1
with the latest git firmware (radeon).

My work-around is to set the power_dpm_force_performance_level and the black
screen behaviour is mitigated.

Let me know if I might assist in any way collecting logs etc.