Kubuntu Forums - KDE neon https://www.kubuntuforums.net/ en Mon, 27 Jul 2026 14:14:16 GMT vBulletin 60 images/misc/rss.png Kubuntu Forums - KDE neon https://www.kubuntuforums.net/ Plasma Login Manager not allowing monitors to go into power save mode https://www.kubuntuforums.net/forum/general/kde-neon/693377-plasma-login-manager-not-allowing-monitors-to-go-into-power-save-mode Sat, 18 Jul 2026 19:16:50 GMT Under SDDM, the monitors will go into sleep mode as expected. Using Plasma Login Manager, the login screens stay on indefinitely.
Using Plasma Login Manager, the login screens stay on indefinitely. ]]> KDE neon oshunluvr https://www.kubuntuforums.net/forum/general/kde-neon/693377-plasma-login-manager-not-allowing-monitors-to-go-into-power-save-mode Wayland display server porblem? https://www.kubuntuforums.net/forum/general/kde-neon/693339-wayland-display-server-porblem Thu, 16 Jul 2026 12:09:46 GMT I took a break for lunch and a siesta and when I got back, my screen was set on 640pixels and insisted that it was the only resolution allowed for...
In syslog, I see messages like these:
2026-07-16T12:24:34.443502+02:00 jon-desktop strawberry[2294]: 12:24:34.435 DEBUG unknown Creating a fake screen in order for Qt not to crash
...
thunderbird[3381]: [Parent 3381, Main Thread] WARNING: Couldn't map window 0x7db21075e5c0 as subsurface because its parent is not mapped.: 'glib warning',
file /build/thunderbird-VCZ2OF/thunderbird-140.12.1+build1/toolkit/xre/nsSigHandlers.cpp:201 [several hundred times]
...
2026-07-16T12:24:45.306289+02:00 jon-desktop org_kde_powerdevil: [ 9923] Emitting DDCA_Display_Status_Event[15156.935: DDCA_EVENT_DISPLAY_CONNECTED, card1-DP-1, dref: DDCA_Display_Ref[24], io_path:
/dev/i2c-9, ddc working: true]
2026-07-16T12:24:45.306402+02:00 jon-desktop org_kde_powerdevil: [ 9923] libddcutil callback thread 0x76434800f070 started
2026-07-16T12:24:45.306443+02:00 jon-desktop org_kde_powerdevil: [ 9923] Started 1 event callback thread(s)
2026-07-16T12:24:45.306734+02:00 jon-desktop org_kde_powerdevil: [ 1982] Quiescing libddcutil API...
2026-07-16T12:24:45.306795+02:00 jon-desktop org_kde_powerdevil: [ 1982] Quiesce libddcutil API complete
2026-07-16T12:24:45.306821+02:00 jon-desktop org_kde_powerdevil: [ 1982] Display redetection starting.

​
The AI assistant of duckduckgo tells me:
The message "Creating a fake screen in order for Qt not to crash" is related to problems with the Wayland display server in KDE environments. This occurs when Qt detects issues with the actual display, prompting it to simulate a screen to avoid crashing.​
​
I'm at

Operating System: KDE neon User Edition
KDE Plasma Version: 6.7.2
KDE Frameworks Version: 6.28.0
Qt Version: 6.11.1
Kernel Version: 6.17.0-35-generic (64-bit)
Graphics Platform: Wayland
​




​
​]]> KDE neon joneall https://www.kubuntuforums.net/forum/general/kde-neon/693339-wayland-display-server-porblem <![CDATA[[RESOLVED]Plasma login manager : can't change &quot;waterfall&quot; wall paper?]]> https://www.kubuntuforums.net/forum/general/kde-neon/693311-plasma-login-manager-can-t-change-waterfall-wall-paper Tue, 14 Jul 2026 14:02:33 GMT Love the new plasma login manager. My dual monitors now have only a single login dialog and on the correct monitor. However, IMO the default...
However, IMO the default "waterfall" wallpaper is damn ugly. Looks like something a grade schooler would like. The configuration shows "breeze" but the selected wallpaper isn't displayed.

Has anyone figured out the trick to get a different wallpaper?
​]]> KDE neon oshunluvr https://www.kubuntuforums.net/forum/general/kde-neon/693311-plasma-login-manager-can-t-change-waterfall-wall-paper <![CDATA[[RESOLVED]Neon install requires EFI file system of 300MB. How to get around this?]]> https://www.kubuntuforums.net/forum/general/kde-neon/693179-neon-install-requires-efi-file-system-of-300mb-how-to-get-around-this Sat, 11 Jul 2026 12:11:12 GMT
Duckduckgo, when asked "how to grow linux file system size in larger partition" suggests first: "Delete the existing partition (this does not delete the data)", which frightens me completely. It then says to "Create a new partition with the same starting sector but a larger size", which does sound reasonable. But what if it fails?

I could copy all the data in the file system and try that method. The big question is: If the EFI file system is damaged or destroyed, can I reboot my system."]]> KDE neon joneall https://www.kubuntuforums.net/forum/general/kde-neon/693179-neon-install-requires-efi-file-system-of-300mb-how-to-get-around-this Anyone else notice a change lately re. application font sizes? https://www.kubuntuforums.net/forum/general/kde-neon/693147-anyone-else-notice-a-change-lately-re-application-font-sizes Wed, 08 Jul 2026 13:48:56 GMT
Anyone else experiencing this?

I haven't started a list yet of apps that are displaying with super small fonts, but that's next.]]> KDE neon oshunluvr https://www.kubuntuforums.net/forum/general/kde-neon/693147-anyone-else-notice-a-change-lately-re-application-font-sizes display shows very large courser pointer and large fonts after log in in kde user edition plasma 6.7.0 https://www.kubuntuforums.net/forum/general/kde-neon/693069-display-shows-very-large-courser-pointer-and-large-fonts-after-log-in-in-kde-user-edition-plasma-6-7-0 Thu, 02 Jul 2026 23:34:26 GMT Folks the title says it all. this is what I got today after login in my fully updated kde neon the mouse movent is so fast and the fonts are so... neon the mouse movent is so fast and the fonts are so large that i can not get out of this. I switched from waylan to x11 which did not help. any comment as how to solve this? thanks!]]> KDE neon marco07 https://www.kubuntuforums.net/forum/general/kde-neon/693069-display-shows-very-large-courser-pointer-and-large-fonts-after-log-in-in-kde-user-edition-plasma-6-7-0