On 01.12.23 12:37, Thorsten Leemhuis wrote: > Maybe one of the developers among the recipients has a idea. Oliver, but > if none of them replies any time soon, it would be best if you'd check > if 6.6 (and/or 6.7-rc) is affected as well; and if reverting it there > fixes it, too. OK, I checked it: compiled a 6.6.3 kernel and got the same suspend-resume problem as with the 6.1.57 and 6.1.64 kernels. I also was able to revert the changes of commit ec5fa9 "drm/amd/display: Adjust the MST resume flow" in the 6.6.3 kernel and the problem was solved as in the 6.1.x kernels (however it seems that resuming with the 6.6 kernel needs a little more time until the monitor gets signal). Best regards, Oliver
