<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Kernel parameter GRUB_CMDLINE_LINUX_DEFAULT="quiet splash amdgpu.ppfeaturemask=0xffffffff" artifacts" href="https://bugs.freedesktop.org/show_bug.cgi?id=108647#c3">Comment # 3</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Kernel parameter GRUB_CMDLINE_LINUX_DEFAULT="quiet splash amdgpu.ppfeaturemask=0xffffffff" artifacts" href="https://bugs.freedesktop.org/show_bug.cgi?id=108647">bug 108647</a> from <a class="email" href="mailto:echarlie@vtluug.org" title="echarlie@vtluug.org">echarlie@vtluug.org</a> <pre>Created <a href="attachment.cgi?id=142682" name="attach_142682" title="dmesg with 4.20.0-rc4 kernel when having the issue">attachment 142682</a> <a href="attachment.cgi?id=142682&action=edit" title="dmesg with 4.20.0-rc4 kernel when having the issue">[details]</a> dmesg with 4.20.0-rc4 kernel when having the issue As I understand, ppfeaturemask is set in order to enable manual performance level configuration and overclocking (more importantly, the archwiki says thats what it does, so people will do it). I've intermittently had this issue with the 4.18 and 4.20rc* kernels with my rx 580 (I've mostly been running the 4.14lts kernel, but that has different issues). Manually setting performance level prevents flickering and artifacting I see on herbstluftwm (which I coudln't reproduce on openbox).</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>