Posted on by sekaya 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 8, 2018 at 3:01 am #1564 sekayaParticipant Yes!, I have exactly the same problem that the other user. High sierra es almost full working except brightness control and blank screen before sleep. Posted in
