A basic Fiji/ImageJ question - when I start Fiji in linux I just get an empty window.
It turns out that it’s running but the menus are white text on a white background.
Kind of difficult to use!
Unfortunately - I am not the person to help you in this. I don’t use linux - so cannot test it. But perhaps you can give us a bit more info… what version of ImageJ/Fiji/Java are you running? What is the configuration of your system?
Have you tried simply downloading/re-installing a newer version of Fiji to see if that does the trick?
I am using the latest version of Fiji and my system java -version reports openjdk 1.8.0_222-b10 although I note it ships with jdk1.8.0_172 anyway. Anything else I can try?