KDE 6 FOR ARCH LINUX IS HEREEEEEEE

I upgraded today!

Encountered only one multimonitor issue with one panel migrating to the primary display after logout/restart, but otherwise, smooth sailing.

Wayland session even seems stable on Nvidia again (I have nothing but regrets about that GPU choice I made 4 years ago).

Does it? I can't login on Wayland at all, which was working on 5.27.
- Wild. 5.27 broke it completely for me! (2070 Super)
  
  5.27 Wayland was also broken for me and my 2070s. However kde 6 Wayland seems to be good so far.
I really hope so. 5.27 Wayland is pretty janky for me, even though I use AMD.
I had the same panel bug I fixed it by removing and adding my panels
I tried using my Nvidia GPU with Wayland on Plasma 6. For most normal applications it seems fine, however, HDR doesn't work properly and some games like Minecraft have a flickering image. At least they fixed the blur and flickering in Firefox.
Using latest Arch Nvidia package.
- @Botzo
  I upgraded also, had trouble with custom service menus I use, found out by myself now they must be in /.local/share/kio/servicemenus/ instead of /.local/share/kservices5/ServiceMenus/, nowhere online anybody says anything about that. Weird.

Smart. I wish I hadn't updated. It kinda caught me by surprise and I'm experiencing a lot of issues.

Ooof. What issues specifically?
- Here's an overview:
  SDDM crashed with some error about the theme: I haven't looked into it yet though. For the time being I disabled SDDM and reverted to console login and startx.
  All my kwin window rules stopped working. Apparently, the window title matching string now should include the window class (i.e. "urxvt URxvt" instead of just "urxvt"), so I had to redo all my window rules.
  ksysguard is gone, together with all my customized monitoring pages and its replacement plasma-systemmonitor is broken. It's complaining about missing sensors, and core dumps on some screens.
  Some of my custom keyboard shortcuts were not working anymore. Had to reconfigure them.
  Desktop overview is gone, replaced with something that has less functionality: I can move windows from the currently selected desktop to another one, but I can't drag windows between desktops.
  The Breeze theme now shows a very thick (and IMO ugly) outline by default. Thankfully you can tune or disable it in the settings.
  Floating taskbar by default is also not my thing, but easy enough to disable. New "edit mode" feels a bit janky though.
  When navigating between panes in System settings, it often shows the "apply settings" dialog even when no settings have been changed. Stop gaslighting me ksystemsettings, I know what I clicked.
  Resizing the window of some (but not all) applications now produces a kind of rubber banding effect: like the contents of the window get stretched and then snap back into place multiple times during the resize. It looks and feels really janky. It doesn't appear to affect QT and GTK applications, and Firefox isn't affected either. Applications that are affected: chrome/chromium, vscode, freetube, tigervnc, urxvt, xterm and all the x* utilties. Turning off compositing "fixes" it, but who wants to run a desktop without compositing nowadays?
  Screen locking is completely broken. When I press Meta+L, instead of simply showing me the lockscreen, the display turns off and starts to flicker on and off multiple times while showing just a black screen and a mouse cursor. After a while the lockscreen does appear, and I can type my password to unlock but instead of showing me my desktop it dumps me back to a black screen with a mouse cursor. After a while, if I'm lucky, the desktop reappears. One time my entire system froze and rebooted (!) before I got my desktop back, and I lost my unsaved work. I disabled automatic desktop locking for the time being, and am fighting against my muscle memory to press Meta+L whenever I leave my desk.
  Especially the last two are bothering me.
  
  There is still a desktop overview that allows dragging windows between virtual desktops (Meta+G) unfortunately when they removed the old overview, they forgot to fully integrate the new overview, so it can't be activated by screen edges (which is how I used to access the old desktop overview).
  
  Yeah I found that, but it seems that it can't arrange my desktops in a 3x2 grid. A 6x1 grid makes the desktop miniwindows a bit small.
  
  Oof yeah, definitely noticed some of those. I also totally lost screen share for both Wayland apps via portals and X11 apps in Xwayland, which really sucks.
  
  In the meantime I found a few more nice ones ...
  Mouse cursor does not always obey the selected cursor theme, so depending on which window I hover over I get the white Breeze Light cursor or the black Adwaita cursor... Oddly enough, it's the new QT6 applications that get the Adwaita cursor. I couldn't replicate this on a "fresh" desktop with a clean user account, so it must be something in my existing settings that caused b0rkage in the 5 to 6 transition.
  Can't toggle mpv to fullscreen. The F key does nothing, neither does the --fullscreen switch.

Really wish I had waited. Post-update screen share is totally dead on my system. Apps that request access via a portal don’t work and never are given access to whatever I select and X11 apps that try to share X11 apps just have a black screen. It’s sucked because of how often I screen share on discord, and I’ve now totally lost that in both the client and on web. OBS virtual camera can’t even help me now because it can’t get access to anything.

Also on my girlfriend’s computer it totally broke graphical acceleration in the shell. Anything that uses it causes the whole shell to lag, and it makes any playing audio choppy.

There’s also lots of little annoyances around like the entire shell crashing when I change themes that have made me wildly unimpressed so far.

You’re best off waiting.