I switched to the new plasma-login-manager fork of sddm because sddm wouldn’t display on my external monitor. According to the option description on [nixos](NixOS Search), I should be able to do man plasmalogin.conf to see the configuration options, but I get a no entry exists error when I run that command. The wiki doesn’t help. I just want to change the wallpaper, but I would like to see all the options.
Thanks
The plasmalogin.conf manpage has been removed. Our documentation is a bit behind on that apparently… I have looked thru upstreams documentation and the arch wiki and I can’t seem to find a way to set a wallpaper directly through plasmalogin.conf/services.displayManager.plasma-login-manager.settings… the preferred method is by using the KCM (that is, in your plasma settings, there should be a new section for Login Screen)
For a full list of options for the config file, you could look at src/common/mainconfig.kcfg · 949dfdd360dddedc6d332a08c343ddbe559e4981 · Plasma / Plasma Login Manager · GitLab but that’s probably not what you want. The plasma maintainers in NixOS are aware of this and are changing the reference from the removed manpage to the link above…
The wallpaper is not set up in plasmalogin.conf, it’s set up in a different file in the greeter’s user’s home directory.
I think that man-page hint is probably stale/too early for the NixOS package: upstream has the config file support, but I don’t see a man page being installed, so `man plasmalogin.conf` failing is not a very useful signal. For the wallpaper, the greeter reads KDE wallpaper plugin config from the plasmalogin config under the Greeter/Wallpaper/org.kde.image area. I’d try setting it declaratively, rebuild, then inspect `/etc/plasmalogin.conf.d/99-user.conf` to confirm it generated an `Image = file:///…` entry, and make sure the image is readable by the greeter/plasmalogin user. If that works, the option description probably needs a small NixOS docs fix for the missing man page.
Can you tell me where the file is supposed to live?
I would like to set it declaratively, I just don’t understand how to do that. Could you provide an example? I was hoping that the man page would explain where/how to declare such things. Where is the actual config? What is the Greeter…kde.image area? Is that a part of the config file for the login manager, or elsewhere in kde/plasma configuration?
Edit: okay, I did find the way to change it in System Settings.
Thanks for your help.
Thanks. I really need to get plasma-manager working, since I have more and more settings configured manually.