All GUIs freeze when navigating 3D viewer

  I’m running 2.8.2 official image on a Celeron j4125 mini PC with Intel Iris graphics. Every time I load a file and try to navigate around in the 3D view the entire UI freezes. Everything else runs perfectly fine (other Linux programs work perfectly fine). If I happen to be running an nc file it continues to run perfectly fine in the background while the UI is completely frozen. I tried Axis, Gmoccapy and silver dragon and they all do the same thing. Occasionally the GUIs would even freeze If I’m just jogging to switch to the MDI…just generally navigating in the UI. When I run Linuxcnc from the command line, I see no errors and if I force the program to terminate from the desktop interface no errors show up in the terminal either. on a couple of occasions when I was running from the command line and tried to kill Linuxcnc using ctrl-c, I got the attached error…something related to glcannon.pyI know this is probably a graphics card issue but what could it be??

I’ll try the software based OpenGL but the vesa instruction don’t work on buster…each time I set the driver to “vesa” in the xorg.conf file the X server won’t start saying no screens found.

Is the program you have loaded really large?
There can be a large delay when moving a very large program in the display.

Another thing could be the servo period set too low. could you post your config files?

The error message you show is because you pressed control c - nothing related to your problem.

Not particularly large, a few thousand lines…but the point is the gui is perfectly fine when the file is loaded and even when running…it’s just randomly freezes for food and never recovers if I’m navigating in the UI in general and more so in the 3D viewport.
My servo period is set to 1.2ms based on a 1ms cycle and max latency of about .13ms. 

I’ll post my ini tomorrow when I’m back in the shop.