Posted by sailsman63 on Dec 27, 2020; 10:17pm
URL: https://forum.jogamp.org/SOLVED-Purple-and-Green-Lines-Stripes-on-All-JOGL-Windows-tp4040923p4040935.html

On a windows system, prioritizing a graphics card is done from outside of the program. There is an "NVidia control panel" that sets this on a system-wide scale, or you can do "Program Settings" for each application.

You might want to consider leaving it at the default, though. Windows is supposed to switch seamlessly between the two, based on the graphics load. (The dedicated NVidia card will pull down a lot more power, and have to dump all of that heat - which might limit run-time under load, and reduce battery life, if you're on the go.)

Generally, the only reasons to lock the big card "on" are:

- To test configurations & code)
- When you *know* that the onboard card can't handle your workload, eg doing very heavy GPU compute work, or if the driver update *hadn't* fixed your issue.