Thanks for your Detailed Thread.
- Please refer Adobe Lightroom GPU Troubleshooting and FAQ and follow instructions to disable Intel HD 4000
- Then restart your computer and see if Lightroom is able to detect the higher end GPU.
Let us know if that helps
Akash, thank you for the reply. I am sorry to be late in responding, but I have been doing more investigation and also the Christmas holidays have been a bit busy.
I read the link you posted and checked everything. Still no go. I was able to finally run LR using the nvidia card by right clicking on lightroom.exe and telling it to run with the nvidia graphics processor. Inside LR I verified that it was using nvidia by checking the performance tab. The result using the nvidia processor or the Intel 4000 processor were pretty much the same in the develop module. In both cases I didn't notice any speed up compared to not using a graphics processor for most things. For a few things though they were slower than not using a gpu. For now I have told LR to not use a gpu.
For PS though doing the right click thing still resulted in PS using the Intel gpu. I haven't done any experimentation to see if PS, like LR, is worse using the gpu.
I suggest you post the Photoshop issue in the Photoshop forum... you will have a greater chance of a solution...
Problem is you are on a notebook that specifically wants to use the lowest power consuming GPU available, that is until a program specifically asks, needs, to use the discrete GPU. The software included with the notebook by the manufacturer and Windows is set up that way to use less battery power and lower the heat output. Not much you can do about it. But as you have found out the use of the GPU, even a discrete dedicated GPU, doesn't really speed things up in LR and sometimes slows it down.
Your best bet it to just turn that option off and stop thinking about it. Same goes for Photoshop.