Does this patch help you? https://patchwork.freedesktop.org/patch/264781/
The easiest way to test it would be to build and try the amd-staging-drm-next branch from https://cgit.freedesktop.org/~agd5f/linux/?h=amd-staging-drm-next Which monitors are you using and how are they connected (DP, HDMI, any adapters)? Harry On 2018-11-22 11:34 a.m., Piotr Karbowski wrote: > Hi, > > I am facing a common issue with a screen artifacts whenever I start my Xorg > on AMDGPU driver with display set to 75 Hz 1920x1080. It appears to be > hitting all the users of AMDGPU driver. > > https://bugs.freedesktop.org/show_bug.cgi?id=96868 > https://bugs.freedesktop.org/show_bug.cgi?id=102646 > > Here I am running the Polaris, RX 580 8G variant. > > I've noticed that if I disable freesync *before* starting Xorg, which makes > my Xorg starts with default 60Hz, I have no screen artifacts. If however I > start Xorg with freesync on (in monitor), XOrg defaults to 75 Hz and I have > random screen tearing and artifacts. What is worth a note is that if I enable > freesync and/or change from 60 Hz to 75 Hz after Xorg started, I have no > screen artifacts. Same goes if I switch to 60 Hz via xrandr and/or disable > freesync in Monitor OSD during Xorg run time, the screen artifacts still > happen. > > Forcing power state to lowest with > > echo low >/sys/class/drm/card0/device/power_dpm_force_performance_level > > Does make the screen artifacts go away, during runtime, without restart. > > I found it a bit surprising that it appears it's about the state of > monitor/default frequency of the moment when Xorg was started rather than > the the currently running frequency of the screen. As with low mode, I Have > 300 MHz on mclk and sclk and no screen artifacts it may mean that it's not > about not enough power on the GPU to handle it, rather than something that > happens when the power states switches. > > Some additional information: > > - I am running simple openbox WM > - Vanilla 4.19.2 kernel > - x11-drivers/xf86-video-amdgpu-18.1.0 > - x11-base/xorg-server-1.20.3 > > Would you kindly share your thoughts about above problem? > > -- Piotr. > > > _______________________________________________ > amd-gfx mailing list > amd-gfx@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/amd-gfx > _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx
