Am Fr., 26. Juni 2026 um 10:53 Uhr schrieb Michel Dänzer <[email protected]>: > > > [ Adding Xaver for awareness ] > > On 6/25/26 21:45, Nick Haghiri wrote: > > On 6/25/26 3:15 PM, Ivan Lipski wrote: > >> I don't think I've encountered a situation when a monitor with DP can > >> wake a system up from DPMS, so that's interesting. What distro and > >> desktop environment are you using? I'd like to reproduce this issue > >> and help with it. > > > > openSUSE Tumbleweed, KDE Plasma 6.7 on Wayland (KWin). GPU is an RX 9070 > > XT (RDNA4), monitor is an MSI MPG 274U over DisplayPort SST. > > > > What happens: when the output goes DPMS-off and the monitor drops into > > deep sleep, it briefly de-asserts and re-asserts HPD. amdgpu forwards > > that as a hotplug, KWin re-probes and re-enables the output, and the > > panel comes right back on, so it never actually stays asleep while > > connected. > > FWIW, that the panel comes on and stays on might be a KWin bug. Mutter had a > bug like that, which I fixed in > https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/4209/diffs?commit_id=ec73076e07640fc0752d9ecc66c5934726db2d7e. Yeah, I did find (and fix) a different problem with our workaround recently, where KWin-internal pointer warps in response to the "hotunplug" were wrongly counted as user activity in some cases. Either way, kernel-side debouncing is very much appreciated.
