https://bugs.freedesktop.org/show_bug.cgi?id=107066
--- Comment #8 from Mikita Lipski mikita.lipski@amd.com --- Created attachment 140625 --> https://bugs.freedesktop.org/attachment.cgi?id=140625&action=edit Don't share clk source between DP and other connectors
Hi Paul, sorry for the previous comment that was a part of the message for another bug. Anyways, I was able to reproduce a similar issue as yours with 4 connectors plugged and only 2 would light up. But in my case it was caused by DP and HDMI sharing the same clock source, but since you're not using DP I wonder, what could have caused an issue for you. I'm attaching 3 experimental patches: 1. 0001-drm-amdgpu-display-Don-t-share-clk-source-between-DP-an.patch This patch should fix the issue for DP connection with Tonga 2.0001-drm-amdgpu-display-update-clk-for-various-HDMI-color.patch Allows programming of HDMI2.0 and later on Tonga 3. 0001-Disable-source-clock-sharing-between-multiple-connec.patch Disable clock sharing by an early return
Can you try if any of them work for you? Thanks