Public bug reported:
When scaling the desktop to e.g. 150%, fullscreen video does seem to
trigger constant changes of the scaling factor: the system switches
every 0.5s from 150% to 100% to 200% or things like those.
The problem does not occur, when there is another windows present (e.g.
a "always-on-top" terminal windows).
Also, KDE doesn't have this problem.
The problem exists in freshly installed 19.10 and 20.04, too. I couldn't find
any reason, why sometimes firefox fullscreen videos do work and sometimes not.
Video playback (e.g. GNOME video player or VLC) does not work properly in
19.10, whereas it works most of the time in 20.04.
How can I help to dig into this?
1) Ubuntu 19.10, 20.04
2) latest available (problem exists since several weeks)
3) What you expected to happen: fullscreen video playback in scaled mode
4) What happened instead: screen starts changing (randomly?) the scaling factor
or at least this is the impression one gets
** Affects: metacity (Ubuntu)
Importance: Undecided
Status: New
** Tags: 20.04
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https://bugs.launchpad.net/bugs/1863391
Title:
GNOME fractional scaling: fullscreen video misbehaves
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