>From what I can tell, Xwayland is still missing DPMS support: https://cgit.freedesktop.org/xorg/xserver/tree/hw/xwayland/
And that's still what all X apps need to use. For example: https://chromium.googlesource.com/chromium/src.git/+/master/services/device/wake_lock/power_save_blocker/power_save_blocker_x11.cc This is a bug in Xwayland only. Xwayland needs to be modified to convert DPMS requests from clients like web browsers into calls to this: https://cgit.freedesktop.org/wayland/wayland-protocols/tree/unstable/idle-inhibit ** No longer affects: chromium-browser (Ubuntu) ** Changed in: xorg-server (Ubuntu) Status: Confirmed => Triaged -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to chromium-browser in Ubuntu. https://bugs.launchpad.net/bugs/1697373 Title: [screensaver] Screen blanks during video playback in Chrome and Firefox under Xwayland Status in xorg-server package in Ubuntu: Triaged Bug description: gnome-shell / gdm / wayland Test Case: 1. Launch netflix in chrome 2. Play a video 3. Wait until the display times out. Expected result The screen does not dim Actual result The display goes black. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: gnome-shell 3.24.2-0ubuntu6 ProcVersionSignature: Ubuntu 4.10.0-22.24-generic 4.10.15 Uname: Linux 4.10.0-22-generic x86_64 ApportVersion: 2.20.5-0ubuntu4 Architecture: amd64 CurrentDesktop: GNOME Date: Mon Jun 12 09:21:46 2017 DisplayManager: gdm3 InstallationDate: Installed on 2013-09-03 (1377 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130902) ProcEnviron: TERM=screen-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_FR.UTF-8 SHELL=/bin/bash SourcePackage: gnome-shell UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1697373/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp