Questa-ModelSim UI scaling problems in Linux

Hello ZiYingE_Altera​,

See the below screenshot for the scaling issue. Note that the text is 'decently' scaled because I already manually changed a lot of numbers in the ~/.modelsim file. The version that I am using is "FPGA edition 2025.2".

Here is the feedback on the steps you recommended me to try:

1. Running which vsim:
fsmits@fsmits ~/D/f/p/s/m/a/s/testbench (feature/control_module)> which vsim
/altera/25.1std/questa_fe/bin/vsim

2. launching ModelSim with the X11-compatible backend:
fsmits@fsmits ~/D/f/p/s/m/a/s/testbench (feature/control_module)> QT_QPA_PLATFORM=xcb vsim
Reading pref.tcl
To which modelsim boots up looking the same as it did without the QT_QPA_PLATFORM=xcb prefix:

Thank you very much for the swift response! Hopefully we can figure out a solution.

cheers,

Finn