Monitor turns off under KDE Plasma Wayland session during video playback

[glaubersm]

mpv version and platform

mpv 1:0.27.0-1, Arch linux

Reproduction steps

play any video under KDE Plasma Wayland session
wait your system reaches the monitor power management timeout

Expected behavior

monitor keeps turned on

Actual behavior

monitor turns off when the power management timeout is reached

[ghost]

Ask kwin to support the idle-inhibit-unstable-v1 protocol.

[dyskette]

Another user here, same thing in GNOME right? And by protocol, you mean this:

https://cgit.freedesktop.org/wayland/wayland-protocols/tree/unstable/idle-inhibit

[ghost]

Yes

[glaubersm]

I'm testing kde plasma 5.12 beta with mpv 0.27 on Arch Linux,
kde plasma 5.12 beta has idle-inhibit-unstable-v1 protocol support
https://bugs.kde.org/show_bug.cgi?id=385956
but the problem described in this report is still happening.