I’ve got 2 graphics cards and it prevents photoshop from working

[obis83959601]

So I bought a AsusZen Pro Duo so it has 2 screens one on the keyboard and one on the main screen because it's a laptop it runs with an intel(R) UHD graphics card and a Nvidia GeForce RTX 2060 the only way photoshop works is if I disable the intel graphics card (photoshop looks like the image below it is an extremely darkened version of photoshop if you look closely you can just make out the colors) but if I disable that the lower screen doesn't work and defeats the whole object of why I got the laptop is there anyway to set photoshop to only use the Nvidia graphics card without turning the intel graphics card off for everything?

many thanks 

[davescm]

Dual GPUs with conflicting drivers is known to cause issues for Photoshop. Photoshop uses the GPU for calculation not just for display of the results. You may be able to force Photoshop to use the NVidia card - see section 7 below:

https://helpx.adobe.com/uk/photoshop/kb/troubleshoot-gpu-graphics-card.html

Dave

[obis83959601]

Hi Dave 

I've just tried it and it still has the same issue thank you very much for the suggestionis there anything else I can try?

[davescm]

I'm not aware of any other steps aside from disabling the Intel GPU.

You could uncheck "Use Graphics Processor" in Preferences Performance which should give you your two screens but would reduce Photoshop functionality and speed.

Dave

[obis83959601]

When I disable it it turns off my lower screen and there is no point in doing that. Thank you anyway I'll just hope there's an update eventually?

[davescm]

You could raise the issue as a bug / feature request at the link below , where it will be seen by Adobe staff.
https://feedback.photoshop.com/photoshop_family

The recommendation though is always single GPU.

Dave

[obis83959601]

That's fair enough I will do. I know the recommendation is one gpu but as I use things like cinema 4D, Maya and 3ds max 2 CPU's were better. Thank you anyway!

[davescm]

Dual identical GPUs can be used when configured together e.g under NVidia's SLI to effectively make one faster GPU. It is when differing GPUs with conflicting drivers are seen that problems occur.

Dave

[davescm]

Just for the benefit of anyone else reading this thread, Photoshop has no issues with multiple screens provided they are run from a single GPU.

Dave

[D Fosse]

I'm sure someone once thought that GPU switching in laptops was a splendid idea - but it's based on a misunderstanding of how advanced applications like Photoshop actually use the GPU.

It's not a passive, one-way flow that can be easily redirected, like it once used to be. Today, the GPU is used for actual data processing. It goes back and forth. Photoshop needs to know which GPU it's talking to. It can't send data to one GPU and expect to get it back from the other.

All that said, you'd think it should be possible to "lock" Photoshop to a single GPU. The fact that it isn't, even though this issue has been well known for a long time, suggests that it's not so simple. Perhaps the necessary APIs simply don't exist.

Whichever way it is, dual GPUs should be avoided at all costs. It should be better emphasized in the system requirements.