<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Screen flickering under amdgpu-experimental [buggy auto power profile]" href="https://bugs.freedesktop.org/show_bug.cgi?id=102646#c66">Comment # 66</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Screen flickering under amdgpu-experimental [buggy auto power profile]" href="https://bugs.freedesktop.org/show_bug.cgi?id=102646">bug 102646</a> from <a class="email" href="mailto:lefcha@fastmail.com" title="Lefteris Chatzimparmpas <lefcha@fastmail.com>"> Lefteris Chatzimparmpas</a> <pre>While the workaround with power_dpm_force_performance_level/pp_dpm_mclk works for me, I found another way to stop the flickering, which I mention here in case it helps debugging. My monitor has a native resolution of 1920x1200 at 75Hz or 60Hz through DP, and 60Hz through HDMI. It supports Freesync through DP, but I have that disabled. I'm using the 4.19 kernel. When through a DP cable, if I switch the resolution to 1920x1080 at 60Hz, and then revert back to the native 1920x1200 at 75Hz, the flickering stops for good. If I turn off and on the monitor, everything is still good, but if I reboot or do a sleep and wakeup of the computer, then the flickering returns, that is until I switch the resolution again. Through HDMI, I don't get the flickering on the native resolution, possibly because I get this max resolution at 60Hz. But note that through DP, changing to 60Hz alone doesn't seem to help. Also, through HDMI, I can make the flickering start, if I switch to 1440x900 at 75Hz, and then it only stops if I switch to 1920x1080 at 60Hz and then back to native. Finally, after I got the flickering stop with the resolution switch, I tried watching the pp_dpm_mclk, and I could see it changing values very fast, similar to when I had the flickering problem.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>