Hi

I'm not sure exactly what caused this, but right after the latest Neon upgrade which included plasma 5.18.1, my desktop is now not handling hi-dpi as well as it used to.
For instance my icons in dolphin suddenly became smaller. That's not a problem since I can still use the zoom slider to adjust them.
The most problematic for me is the multi-monitor setting. I'm setting

Code: Select all

export QT_SCREEN_SCALE_FACTORS='eDP-1=2;DP-1=1;'


at startup, and the result used to be quite nice: if I open konsole, and move it from one monitor to another, it would automatically adjust font scaling.
Since the 5.18.1 upgrade, the behaviour is weird, kind of half-way: on the one hand, when I move a konsole window to the other monitor, I can see that the spacing between line becomes twice smaller, which is good, but on the other hand, the font size does not change, resulting in lines covering each other and becoming unreadable.

I can try to report a bug, but I'm not sure which component is responsible for this

still happening with 5.18.2?

Yes, still happening with 5.18.2.

Maybe even worse, I get some weird mixed behaviour in systemsettings, where some of the fonts are small, other are big

And Dolphin is becoming crazy...

Is there a way to revert to an older version of plasma ?

I had sort of the same problems on my manjaro kde install. It drove me crazy, couldn't get it right again. I ended up reinstalling my system and now i'm happily on Neon. No problems so far...

For me, it is working well for QT applications if I set QT_SCREEN_SCALE_FACTORS="eDP1=1.5;HDMI1=1;DP1=1,DP2=1" together with QT_AUTO_SCREEN_SCALE_FACTOR=1 on Manjaro.

Does anyone have an idea of how to make GTK apps like chrome and PyCharm work in the same way? How even KDE communicate the (fractional) scale? Is it just with the font scaling for GTK apps? Could be xcb_change_property used to communicate the change?