Quartus Prime 20.1 Lite on Ubuntu Linux on laptop with 4K screen - Quartus Prime 20.1 Lite on Ubuntu Linux on laptop with 4K screen I have a laptop with a 4K screen that I use in 3840x2160 resolution running Ubuntu Linux 20.10. I installed Quartus Prime 20.1 Lite. Quartus is usable in this mode but Modelsim is not. I need to switch to 1920x1080 resolution to use Modelsim. Is there a workaround to work in 4K? Replies: Re: Quartus Prime 20.1 Lite on Ubuntu Linux on laptop with 4K screen Thank you very much for this link. I could indeed modify the file .modelsim in my home directory where I made all fonts in "PrefDefault" size 26 instead of 12. Then Modelsim is manageable. Although the icons are still too small and the pop-up windows like File/Open are hardly readable and way too small. But it is workable. Replies: Re: Quartus Prime 20.1 Lite on Ubuntu Linux on laptop with 4K screen Hi Bert, The workaround is to switch resolution of your screen. For 4K, I can see some reference related to your issue as someone there can run on Ubuntu with 4K resolution. Refer to link below for details. If it still persist, I recommend you to stick to first option. https://gist.github.com/PrieureDeSion/e2c0945cc78006b00d4206846bdb7657