KDE is an international technology team creating user-friendly free and open source software for desktop and portable computing. KDE’s software runs on GNU/Linux, BSD and other operating systems, including Windows.
If you encounter a bug, proceed to https://bugs.kde.org/, check whether it has been reported.
If it hasn't, report it yourself.
PLEASE THINK CAREFULLY BEFORE POSTING HERE.
Developers do not look for reports on social media, so they will not see it and all it does is clutter up the feed.
Just let it die already.
I have been running Plasma 6 on wayland since release with no issues. I even recently switched SDDM to wayland mode because they still default to rootful X (WTF!). If anyone cares to do the same:
$ cat /etc/sddm.conf
[General]
DisplayServer=wayland
I switched this as well and found it solves my SDDM hidpi scaling issues!
This is the default in NixOS when plasma6 is enabled. I went down the rabbit hole checking, it's set here.
Too bad fractional scaling is still not universally supported. In Firefox it's buggy and disabled by default (and pretty much abandoned), and using default compat mode (when app is rendered at nearest greater integer factor and then downscaled by compositor) has some strange font rendering issues and potentially worse performance (on 4K monitor the resolution Firefox would be rendering itself would be humongous).
Thankfully in my case I can just increase font size and it works much better than with fractional scaling.
What's wrong with fractional scaling in Firefox? It seems to work fine for me with kwin_wayland. Even if I have different scaling on each monitor, Firefox seems to respect it fine. Some really old software is a bit funky running through xwayland but nothing showstopping.
For me in Plasma 6.3.2 it has noticably different font rendering compared to 100% scale with increased font size. Text looks thinner than it normally should. It's probably the consequence of downscaling.
How are you setting font size? I'm running Plasma 6.3.5 and 150% desktop scale looks identical to 100% with a 150% page zoom in Firefox. Just scaling fonts sounds like it would make everything non-text appear the wrong size.
I do notice a weird behaviour where Firefox renders at 200% scale when it's entirely within a display at 100% scale. If it overlaps another display at all then it uses the appropriate scale for each monitor. Maybe that's a setting somewhere.
This for whatever doesn't work on openSUSE Tumbleweed, last time I checked.