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Can't install on ubuntu 20

Dear friends

I created the psychopy environment and installed libwebkitgtk but still when I run an experiment after a second showing a first screen I get this error in terminal:

(psychopy:6687): Gtk-CRITICAL **: 17:14:07.726: render_fallback_image: assertion ‘pixbuf != NULL’ failed

(psychopy:6687): GLib-GObject-CRITICAL **: 17:14:07.726: g_object_ref: assertion ‘G_IS_OBJECT (object)’ failed

and this error in psychopy runner:
PsychHID: KbQueueStart: Failed to switch to realtime priority [Operation not permitted].
Fatal Python error: (pygame parachute) Segmentation Fault

Current thread 0x00007f10c928f740 (most recent call first):
File “/home/ad/”, line 85 in

Your help is much appreciated!


I’ve also tried several ways to install Psychopy on Ubuntu (different releases), and Debian too with no luck whatsoever. Although I think I have a certain experience with Linux, at the end of the story I had to go for Windows.
It’s really too bad, but at this very moment I think that trying to install Psychopy on a Linux-based system is just a waste of time. Don’t do that.


That’s really unfortunate!