Hi MarkkuM, this is the first that I've heard of any differences in v3 for running on Linux.

Maybe it's possible that one of the updates a while back to use multiple threads for the display does not coexist well with your particular display driver... You might try turning that off - go to Options > General and push the "Edit .ini file" button. Then under the [View] section, find DisplayThreadLimit= and set it to:

DisplayThreadLimit=1

Does that have any effect?

Are you possibly running any type of virus checking system that might interfere with inter-process communication?

- Michael