I have a problem with the text rendering on Ubuntu. I have already posted the issue here but @MOARdV said it's related to the text renderer in RPM and to contact you.
The issue is that fonts on lit appear as white boxes. If you zoom in you can sorta make out the label, but I think it's the texture of unlit indicators shining through. I'm using the CKAN version of RPM and ASET. I'm running a potato (laptop) so the graphics settings are as low as I can make them. Per pixel lighting is 1, otherwise even the unlit indicator textures become unreadable.
Log is available here. I started, loaded a game, and went straight into a capsule and IVA. Then I clicked the cockpit lights on and off a few times before closing the game.
It looks like this with DE_IVAExtention:
Edit:
I also noticed that external light will mess it all up. When the sun shines onto the text it becomes the same blocky, unreadable mess.