Edit: It seems like Okay so I did 2 things at once:
- Started a fresh appdata folder / generated new configs
- Linux: Created a new proton profile in Steam under experimental rather than hotfix (which triggered the above)
Everything works, TV took some spam but I got video feed on channel_00. Others are saying that the below was all it took to fix it for them, others had no luck. I have yet to see more than 1 Linux comment amongst everyone sharing issues so I imagine it's the config. If you are one of these unfortunate few, you might have to delete your config folder and start fresh. If you do, ensure you back-up all data before deleting anything.
First step is to, right before you load your save, validate that the option is enabled (ofc). It is located in the individual save-file options rather than in the game options now. If you can even toggle it then the option is working, it's normally highlighted red and unselectable until you finish Day 7
If it's enabled and you're still experiencing problems, perhaps the issue carried over from 0.9a and you might have it disabled in 0.8's config setting.
For some reason the config option from 0.8 still seems to affect 0.9 saves. Reload, change or at least validate that hijinx didn't occur, and pray bcuz that's all I got at the moment.
Hope you figure it out!