Ubuntu
xorg-server package

  1. Bug #1697373
  2. Comment #9

Comment 9 for bug 1697373

Revision history for this message
Daniel van Vugt (vanvugt) wrote : Re: Do not dim/lock the screen when a video is playing

It appears that Xwayland on artful has no DPMS support yet:

https://cgit.freedesktop.org/xorg/xserver/tree/Xext/dpmsstubs.c?h=server-1.19-branch
https://cgit.freedesktop.org/xorg/xserver/tree/hw/xwayland/Makefile.am?h=server-1.19-branch

So Chromium can't use DPMS to disable blanking:

https://chromium.googlesource.com/chromium/src.git/+/master/device/power_save_blocker/power_save_blocker_x11.cc#427

Looks like the situation is changing in trunk Xorg/Xwayland but unclear what the status of DPMS support is (dpmsstubs.c no longer exists).