Question: How does anyone temporarily disable the NVidia GPU so that their rig resorts to intel GPU only as per @TheEmu's situation.? It stands to reason, if members cannot temporarily do that, surely they will never know whether anything is working to GLSL rules or not. Problems shouldn't be fractal but they seem to beget each other lol.
It depends on your set up. Many PCs now have the grahpics card built in and not necessarily INTEL. If you do not have a separate graphics card then you can only work with the onboard one. Usually you woulld have to go into the BIOS to enable/disable the onboard graphics if you have a separate graphics card. Many people would not have this option if they only have the one GPU. Mine is permanently disabled as my lowly AMD/ATI is far better then the the onboard graphics.
I suspect that
@ThEmu has a laptop similar to my work laptop. It has dual graphics cards (mine is INTEL or AMD). It auto switches between the two dependent on the application. For high graphics usage e.g. AutoCAD in my case, it automatically uses the AMD.
I haven't looked at mine too closely (It is only used at work) but I am guessing there is a way to ***** it to use only one of the graphics processors. I have a feeling that
@TheEmu did this a while back when there were some problems with some of the stuff he had done. Apparently it worked OK on one of his GPU's but other people were having problems. When he tried it on his other GPU it also exhibited problems. Now I think he tries everything on both GPU's just to be certain.