I tried use hd4000 with deleting other (nvidia) Kext. but It does not work.
my laptop is Optimus system (Toshiba Qosmio x875 q7390)
When I use GE=Yes GeForce GTX 670M 3072 MB
When I use GE=No Display 7mb ( but there was 'nvidia display' at System Report even I deleted all nvidia kext)
I not sure I can QE/CI with my GTX 670m.
If it is impossible. I like to use HD4000. I think I need Right DSDT for my laptop.
please help me.
I attached my DSDT and IORE