Comment # 83
on bug 102646
from Tom B
I have a similar problem with my Radeon VII. My testing/experiments are outlined here: https://bugs.freedesktop.org/show_bug.cgi?id=110510 sorry for the long post! However my bug seems slightly different albeit related. 1. The flicker only occurs on my HDMI monitor. It's a flicker and sometimes the screen will go black for a couple of seconds 2. If the HDMI monitor is the only monitor connected I can set the refresh rate to 59.94 instead of 60.00 and it is fine 3. If the HDMI monitor and a displayport monitor are both connected the flicker still occurs. However, trying to set the HDMI monitor to 59.94hz causes the system to freeze and I have to do a hard reset (it's fine if the HDMI monitor is the only monitor) 4. Setting power_dpm_force_performance_level to high alone does not fix it. But by running the higher power state I can set the HDMI monitor to 59.94hz without the system freezing In short: I need to use 59.94hz to stop the flickering and I need to use high power state to set the refresh rate without freezing the entire system. Although this is an acceptable workaround I would like to see a proper fix.
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