If you are using Linux and use IBus for input of other languages, you may notice that when using Mechanical APDL, you cannot enter APDL commands in the “Command Prompt”.

If this is the case, unset the environment variable XMODIFIERS (e.g, “unset XMODIFIERS”) prior to running Mechanical APDL, and you should be able to type APDL commands in the “Command Prompt”

(If this does not work, check to see if you have QT_IM_MODULE and GTK_IM_MODULE and unset those as well.)