@kovidgoyal--
Thank you for getting back to me so quickly!
This is a wonderful clue. It leads me to a new stage of being lost!
1. On the site you linked, I think what I need to use is
Quote:
|
--disable-gpu disables GPU hardware acceleration. This is useful when diagnosing OpenGL problems.
|
Am I correct? If so, it seems there must be some first part to the command, or at least I have not before seen a linux command that starts with a double dash.
2. I checked in synaptic and found no openGL drivers. I did find a driver here:
https://www.nvidia.com/en-us/drivers/unix/. I am nervous to install it for fear it might break my nvidia install.
3. I have run nvida-settings and found these OpenGL Settings: should I perhaps change any of them?
Sync to VBlank (checked)
Allow Flipping (checked)
Image Settings (set to Quality--other choice are High Quality, Performance, High Performance)
Use Conformant Texture Clamping (checked)
Enable Graphics API Visual Indicator (not checked)
So you can see I am a babe in the jungle with all this. What do I test next?
Thanks, kovidgoyal!
:- Doug.