SUMMARY The contents of plasma applets in panels appear blurry on scaled DPI displays similar to how Xwayland applications display on scaled displays. For example, on my 150% scaled 4k display, the calendar of the digital clock looks blurred (https://i.imgur.com/vYa7A5Y.png). It appears fine on non-scaled displays (https://i.imgur.com/d0Nyipo.png). Screenshots have been provided but the graphical problem may not be entirely visible on them. This applies to the applet bodies but not the icons or tooltips that appear when hovering over applets, these are nice and crisp (https://i.imgur.com/HezcLuJ.png). STEPS TO REPRODUCE 1. Use a scaled display 2. Click on an applet that displays content such as system tray, digital clock or the notifications pane. 3. Content will be blurry. OBSERVED RESULT Content of applets are blurry on scaled DPI displays but display fine on non-scaled displays. EXPECTED RESULT Content of applets should display as sharp as other content on scaled DPI displays. SOFTWARE/OS VERSIONS Linux/KDE Plasma: 5.16.60-arch1-1 (64bit) KDE Plasma Version: 5.23.90 KDE Frameworks Version: 5.90.0 Qt Version: 5.15.2 ADDITIONAL INFORMATION - Unsure if this is a multi-monitor bug specifically, as I have only tested on my multi-monitor desktop setup. - The applets themselves are sized correctly but are just blurry.
1. Does it magically fix itself if you restart plasmashell manually with `kquitapp5 plasmashell ; kstart5 plasmashell` 2. Does it reproduce when there is only a single screen with 150% scale?
The issue is not resolved with the command listed, but it *is* resolved when there is only one scaled monitor. I turned off my other displays and had to log out and log back in before it took effect though. Once the other monitors are switched back on, the issue comes back. Here is an updated list of steps to reproduce the issue: 1. In a multi-monitor setup with one scaled display, applets will appear blurry 2. Power off all monitors except the scaled one 3. Log out and log back in again 4. Applets will appear crisp 5. Switch other displays back on 6. Applets will appear blurry again So in short, the issue still persists after restarting Plasmashell manually, but does not reproduce if only a scaled display is connected on login.
Thanks for the info.
As a small update, this is still present in 5.24.0.
Still present in 5.24.90
Still a problem with the 5.26 Beta, and actually the tooltips do appear blurry now as well.
This appears to be fixed in Plasma 5.26.0!! Here's how the calendar looked before (screenshot taken from my opening issue): https://i.imgur.com/vYa7A5Y.png Here's how the calendar looks now: https://i.imgur.com/QVLUeW3.png There was also a problem where the context menu would appear blocky/blurry (it's offset to the edge of my screen due to another bug), but this has been fixed. I noticed the context menu fix first, and that prompted me to check my panel applets and they all look very crisp now!
Awesome!