Cannot Launch into Niri

[moykal]

Hello, I am very new to Gentoo (finished the handbook yesterday), and I cannot figure out for the life of me what is keeping me from launching a Niri session. I am running this on a laptop with a Ryzen 5000H with integrated radeon graphics. At this moment I have no DEs or WMs, and all I have is the cli used in the installation process. I do not have tmux installed on my system.

My 00video in the package.use directory contains "*/* VIDEO_CARDS: -* amdgpu radeonsi" and the drivers have been installed.

Here is the output of "dbus-run-session niri --session":

2026-03-28T15:46:19.5434032 INFO niri: starting version 25.11 (b35bcae)
2026-03-28T15:46:19.5647662 DEBUG niri_config loaded config from "/username/.config/niri/config.kdl

thread 'main' (2899) panicked at src/main.rs:181:6:
called 'Result::unwrap()' on an 'Err' value: error initializing the TTY backend

Caused by:
0: Error creating a session. This might mean that you're trying to run niri on a TTY that is already busy, for example if you're running this inside tmux that had been originally started on a different TTY
1: Failed to open session: Function not implemented (os error 38)

stack backtrace:
note: Some details are omitted, run with 'RUST_BACKTRACE=full' for a verbose backtrace

Thank you in advance!

[flexibeast]

Can you please confirm that you're doing `dbus-run-session niri --session` from the Linux console, and not from a terminal emulator running inside some GUI session?

[Hu]

Welcome to the forums.

There does not appear to be a package named niri in gentoo.git, though there is one in the ::guru overlay.

That Function not implemented looks odd to me. Please post the output of emerge --info --verbose niri.

[moykal]

I appreciate the replies! I was actually able to figure it out with the help of a person on reddit!

Here is the thread: https://www.reddit.com/r/Gentoo/comment ... into_niri/