nixos/kmscon: prevents entering the desktop environment #385497
Description
Nixpkgs version
- Unstable (25.05)
Describe the bug
After enabling kmscon and the display manager, the system directly enters kmscon on boot instead of only activating kmscon when switching to a non-graphical TTY. Additionally, launching weston, startplasma-wayland, or startx within kmscon all fail.
Steps to reproduce
Enable both kmscon and any desktop environment in the NixOS configuration.
Expected behaviour
When both kmscon and a display manager are enabled, kmscon should only start when switching to a non-graphical TTY. Within kmscon, it should be possible to manually start the desktop environment using commands.
Screenshots
No response
Relevant log output
Additional context
No response
System metadata
❯ nix-shell -p nix-info --run "nix-info -m"
- system: `"x86_64-linux"`
- host os: `Linux 6.13.4, NixOS, 25.05 (Warbler), 25.05.20250224.0196c01`
- multi-user?: `yes`
- sandbox: `yes`
- version: `nix-env (Nix) 2.24.12`
- nixpkgs: `/nix/store/593xvgv994xlkm5mb7w4p1xxnzrs9wv6-source`
Notify maintainers
@omasanori
Note for maintainers: Please tag this issue in your pull request description. (i.e. Resolves #ISSUE.)
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