Re: Plasma or X11 nor switching correctly since trixie
Hans composed on 2026-01-09 15:49 (UTC+0100):
> I believe, there is either a bug in X11 or KDE (plasma).
> Following problem, do the following:
> - Start any browser like firefox or similar
> - go to youtube or soemwhere else and start a video
> - switch the video to fullscreen
> - now switch back, close the video
> - you will now see the browser too big for the screen (have to close with
> ALT+F4)
> I believe, this behaviour is caused as my screen resolution is not 16:10 as
> most screens are, but 16:9 (it is a laptop DELL Latitude 5400).
I can't help with much specific to Plasma, but there are things to try. First,
with browser still having focus, hit F11, the fullscreen toggle key in most
browsers - once or twice. If that doesn't work, try a switch to vtty after closing
the video (e.g. Ctrl-Alt-F[3,4,5] to get to vtty, then Alt-F[2,7,1] to return to
Plasma, whichever numbers work; not all configurations run (SD-)DM on the same
vtty, with 1 or 2 recently more common in place of the traditional 7. If that
doesn't help, run xrandr in Konsole to discover the name of your video output
connection, likely HDMI-1, or DVI0, or DisplayPort-1 or similar. Then use that to
run xrandr again to reset the display e.g. thus: xrandr --output HDMI-1 --auto.
Last resort, try Plasma systemsettings for display, and apply a resolution change,
then change it back.
Also, 16:9 is an HDTV standard since roughly 3 decades ago, thus very common in
computing, probably much more common than 16:10, which AFAICT only arose for
computing environments many years after HDTV was established. Display panels back
then in 16:9 were readily available and adapted for use for computer displays,
with 16:10 initially common in 1280x800 for early widescreen laptops. These two
aspect ratios tend to be more common in certain sizes, with 24" one of few sizes
common to both ratios. e.g. 19", 21" and 27" I've only seen in 16:9 (both
1920x1080 and 1600x900), while 22" (1680x1050) I've seen mostly, & 30" (2560x1600)
I've seen only, in 16:10.
--
Evolution as taught in public schools is, like religion,
based on faith, not based on science.
Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!
Felix Miata
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