Created attachment 156486 [details] status of steam SUMMARY When I upgrade plasma from 5.26.90 to 5.27, steam (run in XWayland) rendered in the wrong scale except for window size. All contents (text and image and button) are very small except the top bar. My scale is 2, with only one enabled screen. I don't know which component kde-gtk-config corresponds to, so I chose general. STEPS TO REPRODUCE 1. upgrade to 5.27 2. open steam 3. look OBSERVED RESULT steam (run in XWayland) rendered in the wrong scale except for window size. All contents (text and image and button) are very small except the top bar. EXPECTED RESULT all contents are scaled up by 2. SOFTWARE/OS VERSIONS Linux: Arch Linux KDE Plasma Version: 5.27 KDE Frameworks Version: 5.103 Qt Version: 5.15.8+kde+r181 ADDITIONAL INFORMATION I tried https://invent.kde.org/plasma/kde-gtk-config/-/commit/95a66e22d484d9291f79770643865477e5f4aef8 and https://invent.kde.org/plasma/kde-gtk-config/-/merge_requests/56 , but it doesn't work. Fushan Wen(@fusionfuture) reminded me that this might be related to steam using GTK2, so I opened a separate bug report. Related: https://bugs.kde.org/show_bug.cgi?id=465733
You didn't mention https://invent.kde.org/plasma/plasma-workspace/commit/14c5b464f41f2b858453fd102ed57397755f9c26 does that help?
(In reply to David Edmundson from comment #1) > You didn't mention > https://invent.kde.org/plasma/plasma-workspace/commit/ > 14c5b464f41f2b858453fd102ed57397755f9c26 > > does that help? After this commit, the modified part of the code is actually back to the state of tag 5.27.0. https://invent.kde.org/plasma/plasma-workspace/-/blob/14c5b464f41f2b858453fd102ed57397755f9c26/startkde/startplasma-wayland.cpp#L69 https://invent.kde.org/plasma/plasma-workspace/-/blob/v5.27.0/startkde/startplasma-wayland.cpp#L69 In fact, this string of changes is generated like this, `startplasma-wayland: Don't set GDK_SCALE and GDK_DPI_SCALE` is a modification that was added before 5.27, Nate tried to fix 465733 so reverted it, and added another commit to make users can override the settings, then Fushan Wen found a better way to solve that problem, so there is https://invent.kde.org/plasma/plasma-workspace/-/commit/14c5b464f41f2b858453fd102ed57397755f9c26 and https://invent.kde.org/plasma/kde-gtk-config/-/commit/95a66e22d484d9291f79770643865477e5f4aef8
Sorry, I just found out that this is actually a problem caused by the steam update, but the update is very close to the release time of 5.27, which caused me to blame KDE. https://github.com/ValveSoftware/steam-for-linux/issues/9209