This new architecture, which uses a real Linux kernel, changes how these Linux binaries interact with Windows and your computer’s hardware, but still provides the same user. Windows Subsystem for Linux 2 (Build 18917) WSL 2 is a new version of the architecture that powers the Windows Subsystem for Linux to run ELF64 Linux binaries on Windows.I fixed it as follows: Open ~/.modelsim (use “nano ~/.modelsim” in terminal) Find: PrefDefault = … textFontV2 Save ~/.modelsim (Ctrl+O and then Enter) Reopen. I ran into this too in Ubuntu 16.04 LTS with modelsim 10.5 ASE.