Just in case you are trying to find "Background Services" inside "Session" and it is missing, I somehow only find it in the Plasma Search as its own sort of application through the System Settings search provider of Plasma Search. To make things more weird, it then reappeared back as expected as an entry inside System Settings itself. On another system, which is an Arch Linux ARM system, it also has the issue but the "Background Services" haven't shown up back inside the System Settings so far and I still have to run it directly from the Application Menu there. I don't know what my systems are smoking, but if you happen to have the same issue, you may find this helpful.

I was trying to enable the previously disabled keyboard daemon so that configured keyboard layouts would work again (could use some notice that the daemon must be running).

Plasma 6.1 landed on Arch recently and so far, it's a mixed bag. On one hand, there's some really cool features, such as session restore and keyboard lighting support, as well as the re-designed desktop edit mode. On the other hand, there's bugs, lots of them.

The aforementioned edit mode, while an improvement visually, still feels broken. Depending on where the widget is placed, you might not be able to configure/remove it, since the dialogue for that is covered by one of the edit menus. Now, I know this is the first release of 6.1, and bugs are to be expected, I accept and respect that. However this is such a basic functionality issue, that I don't understand how it could have been missed in the first place.

Text-only sensors are broken when placed inside a panel, and don't scale properly. I expect this will hopefully be fixed in the next release of 6.1.

Then there are some design choices which I can't understand. In particular, the removal of the background services page from settings, and disabling middle-click virtual desktop deletion from the overview. Please don't remove pages because they are 'confusing' to the end user. We are not stupid - if editing a setting could cause stability issues, put a big red warning above it, don't just remove it. Yes, you can still access it from the search menu, but that's meaningless, since unless you know it exists, you won't know to look for it. Same goes for the virtual desktop change. Why disable the middle click virtual desktop deletion? I believe the reason stated was so that users don't accidentally close it, but I ask, how does anyone ACCIDENTALLY press middle click on their mouse? I understand if this was trackpad related, but that would hardly affect desktop users. At least add an option to re-enable it.

I understand the need to remove unused settings that add additional layers of code complexity and the bugs that come with it. But please do NOT remove settings for the sake of doing so.

I am aware that Plasma is community-run and available for free, and complaining these things might seem ungrateful. I really respect the project, it is by far the most customizable desktop environment out there and even despite its size and complexity it still works very well. The developers have clearly put in a lot of effort into making Plasma into what it is now.

: )

My setup was heavily customized under Plasma 5, so naturally Plasma 6 trashed a bunch of things after I upgraded to it. I've been trying to pick up the pieces and get things back in order, but this is hard to do when it's almost impossible for me to read most of the text in the System Settings app.

I've tried changing the text colors for my theme through this app, but the settings refuse to take. I've had more success configuring my fonts using using qt6ct, which I had installed before I installed Plasma 6, but I can't find an option to un-screwup the colors in System Settings.

I'm on EndeavourOS.

EDIT: I should add that the "Application Style" section of System Settings is completely broken and refuses to change anything.

The "Colors" section is mostly broken too, though I can still set an accent color as long as I'm using the "Breeze" theme under Plasma Style. However, the accent color doesn't seem to do anything in Dolphin, instead reverting to the default blue.

EDIT2: So I found out that by setting the palette to "Default" in qt6ct, I can make System Settings readable again. It's light mode, and it messes up my other apps, but it's readable.

Thankfully, I can achieve the same result by adding systemsettings as an ignored application under qt6ct's troubleshooting tab. The downside of doing it this way is that it doesn't fix my widget settings dialogs, but it's something.

EDIT4: Something changed with a recent update, so I've had to take systemsettings off the ignore list in qt6ct so that text is visible in the searchbox. However, it now works properly with the "darker" custom color scheme in qt6ct, so I finally have a dark mode System Settings app again. Yay!

EDIT5: I'm almost certain qt6ct was the root cause of my problems now. It partially overrides KDE's theming system and when I uninstalled it, nearly all of my theming issues went away.

Is there any way to start background services (be it specific, individual background services or all enabled background services at once) from the CLI? If so, how?

I am utilizing KDE Plasma for theming on a standalone tiling wm (qtile) but I don't want the overhead of running the entire desktop environment, so basically I just have XDG_CURRENT_DESKTOP set to KDE. However, KDE can't theme GTK programs without the "GNOME/GTK Settings Synchronization Service" background service running. Is there any way to specifically start this service from the CLI (that is, automatically/without having to manually open systemsettings)? Since I have no use for the other services, I have them all disabled, so a solution that starts all enabled services also works for me.