https://bugs.freedesktop.org/show_bug.cgi?id=101053
Bug ID: 101053 Summary: DC R9 285 fullscreen video regression since drm/amd/display: Parse scanline registers Product: DRI Version: DRI git Hardware: Other OS: All Status: NEW Severity: normal Priority: medium Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: adf.lists@gmail.com
R9 285 tonga since
commit afbeb2d0961b2139bcf6553a710e6a8ae5d09d34 Author: Sylvia Tsai sylvia.tsai@amd.com Date: Tue Apr 11 15:15:28 2017 -0400
drm/amd/display: Parse scanline registers
They could differ between ASIC generations
Change-Id: Ia352ae206273fe3a025579554cae4e3711a26fcc
on agd5f drm staging 4.9/11 there is a regression with full screen video.
mpv --vo=vaapi/vdpau/opengl all the same, dropping frames, or playing slowmo with --framedrop=no
Windowed playback is OK, testing with 60fps vid on 60Hz DVI-D display.
Forcing clocks high does not help.