I’m using EndeavourOS with KDE.
The display is correctly oriented when logged in but it doesn’t rotate correctly when I’m logged out.
EDIT: corrected the post. This happens when logged out, locking the screen has it displayed correctly.
this post was submitted on 14 Jun 2024
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If you're using Wayland, you can go to Settings -> Colors & Themes -> Login Screen (SDDM) and click "Apply Plasma Settings..."
If you're using X11, it looks like you'll have to resort to hacky scripts, unfortunately.
Source: https://discuss.kde.org/t/how-to-change-monitor-layout-and-orientation-in-sddm/3377
This is why X11 is better. I’d rather have settings like this in a text file that I can copy over to my next machine than have to navigate a UI that will change on a different DE or the next upgrade.
Backwards compatibility, portability, and text-based interfaces are a virtue.
X config files aren’t “hacky scripts”, they are fundamentally more powerful, customizable, usable, and future-proof. Xrandr is a powerful and capable interface with applications across the system.
When Wayland adopts these kinds of powerful interfaces with decades of refinement I’ll switch to it. I don’t want to keep track of whether my DE uses wlroots or gnome or plasma and their independent/redundant/feature-lacking randr alternatives. Randrs should be more fundamental to the display operation than the DE. Wayland is fundamentally hacky and broken.
Edit: thank you all for the discussion. I’d like to clarify a point. I don’t just want a text file with configuration settings that implement features that I need to beg/bother the devs for. They are likely to have better things to do and it might not be a priority for them. I want access to powerful tools via the configuration files that I can make do pretty much anything if I read the documentation. Xrandr is such a tool. I don’t want setting for a feature that has to be baked into the DE which I have to beg to have implemented and which will be implemented differently across different DEs. I want flexible, dynamic, modular tools.
In Wayland, the compositor is the window server ( the equivalent of Xserver ). What you are looking for has to be a feature of the compositor and it is.
As others have said below, wlroots based compositors offer wlr-randr. There is also gnome-randr. For KDE, there is Kscreen-doctor. For X ( the window server being used by SDDM here ), there is xramdr.
Now, some people may see it as a problem that we have multiple Wayland implementations. I am mostly not fighting that battle. I will say that I hope these are not the same people that winge about systemd though and push for alternate init systems. I hope nobody that thinks MUSL is cool Is clinging to X11.
I would prefer that there was a common configuration standard for this stuff on Wayland. It will probably come eventually. Maybe as part of the freedesktop.org stuff.
Generally, I believe the Linux ecosystem has been stronger in areas where there has been competition between implementations ( even compilers ). I hope that Wayland will be one of those areas. As the core problems get fixed, the pace of innovation will increase. I believe we are already seeing that. There are more examples every day of things Wayland can do that X11 cannot. Let’s hope for more of that.
What are the examples Wayland can do and X11 cannot?