https://bugzilla.kernel.org/show_bug.cgi?id=202445
--- Comment #17 from Nicholas Kazlauskas (nicholas.kazlaus...@amd.com) --- I can reproduce the issue but vsync needs to be on. I'd recommend turning vsync off for now to avoid flickering. The issue lies in how amdgpu_dm handles waiting for vblank and how userspace interacts with the vblank counter in variable refresh rate mode. The routine that does the wait / flip programming tries to aim for the next vblank interval based on the current counter which rolls around at the vback porch. If the routine gets delayed past scanout and into the front porch what can happen is we're stuck waiting for the current vblank interval to timeout, which will force the monitor to the lowest refresh rate and introduces stuttering / flickering in this case. There should be a fix for this soon. -- You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
