iMac Vertical Lines Repair › Forums › All Forums › Repairs and Issues › After GPU repair issues (R8911 removal) › Reply To: After GPU repair issues (R8911 removal)
January 20, 2018 at 3:13 am #1638
Adam – RealMacMods
Please review the procedure again. The kernel extension method is very different and not compatible with removal of r8911.
You have merely killed the power (via r8911) to your GPU without providing the EFI instruction to route primary video to the Intel GPU.
Advice is to bridge the R8911 pads and run the automated utility. After safe boot remove the bridge and you will be working only off the Intel GPU.