How to force rMBP to keep Iris Pro instead of 750M when using Photoshop?

[Carlson-online]

There's an option in the preferences

Performance -> Dedicated Graphics Processor -> Use Graphics Processor

 

[Godavid]

I'm bumping this just to ask how you guys are able to switch the graphics via gfxcardstatus?

I was trying to use simple applications like MIT's scratch and some other code programs and it automatically switches to the 750m.

In doing so, when I try to switch it back a pop up tells me I can't.

Is the new OS the problem?

 

[yjchua95]

I'm bumping this just to ask how you guys are able to switch the graphics via gfxcardstatus?

I was trying to use simple applications like MIT's scratch and some other code programs and it automatically switches to the 750m.

In doing so, when I try to switch it back a pop up tells me I can't.

Is the new OS the problem?

It's a known issue with gfxcardstatus. You need to set it to integrated twice (the first time still leaves it at dynamic, the second type forces it to integrated for good).

 

[ha1o2surfer]

GPU switching happens when certain graphics libraries get called, and Photoshop utilizes OpenGL to improve performance. The solution to this problem was Nvidia Optimus on Windows, and it never worked correctly. Apple chose to implement a solution that was simplest for average users, since simple is what they're all about.

The only other thing that you can try is to go to Preferences > Performance in Photoshop. In the bottom right corner (in CS6), there are some graphics settings that you can try playing with. Unfortunately, that will move the processing to the CPU rather than the Iris Pro. Hopefully Adobe can address that themselves.

It actually works great and doesn't require hacking as it does on the Macbooks. Right click > run on integrated Graphics and call it a day lol

I was watching my wall power meter whiling using gfxstatus and forcing intergrated does not wake up the dGPU. So that may be the only solution.