<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [Regression] Tonga can't bring up > 1 display since DC enablement" href="https://bugs.freedesktop.org/show_bug.cgi?id=107066#c8">Comment # 8</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [Regression] Tonga can't bring up > 1 display since DC enablement" href="https://bugs.freedesktop.org/show_bug.cgi?id=107066">bug 107066</a> from <a class="email" href="mailto:mikita.lipski@amd.com" title="Mikita Lipski <mikita.lipski@amd.com>"> Mikita Lipski</a> <pre>Created <a href="attachment.cgi?id=140625" name="attach_140625" title="Don't share clk source between DP and other connectors">attachment 140625</a> <a href="attachment.cgi?id=140625&action=edit" title="Don't share clk source between DP and other connectors">[details]</a> <a href='page.cgi?id=splinter.html&bug=107066&attachment=140625'>[review]</a> 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</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>