Is anyone else on the beta and having similar results? Just curious if the boot issue has been addressed in this update or if it has gone away on my machine for other reasons. either way, I'm glad that it has cleared up, hope it stays that way
Is anyone else on the beta and having similar results? Just curious if the boot issue has been addressed in this update or if it has gone away on my machine for other reasons. either way, I'm glad that it has cleared up, hope it stays that way
Hello Guys,
I am about to buy a labtop "Mac BookPro 15 Inch Late 2011" with this issue, Do you recommend it for me?
I can live with this issue, if it is only appears when start up?
I am waiting your quick response.
I have the same problem at the photo. It has started today. I had a problem with my bluetooth - cut of bluetooth speaker (just in external monitor mode) and try to fix it I did nvram. and this glitches at startup started after nvram.
I made hardware test; no problem detected.
I restored my Mac from my backup. same issue. not solved.
I hope It is not about graphical card or hardware.can be fixed by software updates.
my Mac is early 2011 15" - AMD Radeon HD 6750M 1024 MB
Just to say I'm getting this too now following an upgrade to a flashed HD 5770 in a 2009 Mac Pro and after a PRAM and SMC reset following installation so it's not restricted to Macbooks.
The latest beta of 10.12.4 seems to have finally fixed the weird graphics boot glitch for me on my early 2011 17" MBP.
What was strange is that the machine went into a reboot loop after the installer had finished and then the SMC seemed to have reset itself. I'm not sure if they've changed something on a firmware level but if anyone has the same MBP and is running 10.12.3 it'd be good if you could share your SMC/BootRom version numbers etc for comparison. I forgot to make a note of mine prior.
Yes the glitches are gone! Thank you Twimfy!!!!
Looking at the version numbers, there was an SMC update performed. Thanks for providing the info.
SMC ver is the same. Boot ROM different?
Boot ROM Sürümü: MBP81.0047.B32
SMC Sürümü (sistem): 1.69f3
I have the exact same issue on my late 2011 15", that horizontal glitch line was there before replacing the logic board at the genius bar and after receiving it from them a month ago. The tech noted that this was not a hardware issue and was related to the OS(I'm running Sierra) that apple was already well aware of happening to certain models. I had the same issue with the video card about 3 years ago and apparently they didn't have this quality program then because I was charged 300 dollars to replace the logic board. Now I'm selling this before I run into more issues, I wonder if installing an older OS might do the trick at getting rid of this suspicious line.
![]()
My early 2011 Macbook Pro 17 is displaying a strange graphical glitch as it is loading OS Sierra, at just the point before the screen goes black for a moment and the progress bar zips across to the end (as normal). I've uploaded a photo of it with this message.
The machine has passed the extended AHT and I've not seen problems with it elsewhere, but in truth I do not use it much. I'm worried because I've not seen this on my previous Macbooks, and I know the GPU in the 2011 has a rather dubious reputation.