Commit from core2:
commit 94d52a13e7
core: adjust guid parameters when running on KDE5
On KDE5 native decoration plugin is used and requires special properties
set (instead of `_QUBES_VMNAME` etc).
Special care needs to be taken when detecting environment, because
environment variables aren't good enough - this script may be running
with cleared environment (through sudo, or from systemd). So check
properties of X11 root window.
QubesOS/qubes-issues#1784
When properly set, applications will have a chance to automatically
detect HiDPI and act accordingly. This is the case for Fedora 23
template and GNOME apps (maybe even all built on top of GTK).
But for privacy reasons, don't provide real values, only some
approximate one. Give enough information to distinguish DPI above 150,
200 and 300. This is some compromise between privacy and HiDPI support.
QubesOS/qubes-issues#1951
This commit is migrated from gui-daemon repository
(dec462795d14a336bf27cc46948bbd592c307401).
