But I’m not sure where to look. It seems like jobs focusing on free/libre software are difficult to find
This hashtag can be used to search : https://mastodon.social/tags/FediHire And the videos of Andreas Kling could inspire you ? Andreas came out of rehab, gave up his job to work on his open source hobby OS and web browser based on donations : https://piped.video/channel/UC3ts8coMP645hZw9JSD3pqQ
Do have the
startx
command installed ? You can use that from the command line without DisplayManager (Switch to a virtual console with e.g. ctrl-alt-F2). And with XFCE4 you can use the commandstartxfce4
to start from the command line without DisplayManager. This could help troubleshoot.