tayaevents.blogg.se - Smcfancontrol for mac wont run yosemite

Apple replaced a failed chip with a failing chip.

Not "re-balling", not "reflowing", not "baking". The only real way to fix this problem is to replace the AMD chip alone.

The Apple Repair Extension program is not available anymore. Intel graphics and much better thermal management than simply removing all AMD/Ati-related kernel extensions. Here is an alternative that disables the faulty AMD chip but gives you properly accelerated Following the advice here will only give you a booting Mac with colour where you can login but without proper acceleration of the GUI. The solutions given so far are only good enough advice to get the machine booting far enough to make a backup and move on. Solved: Booted to Single-User mode and disabled Radeon GPU. I will be taking my MBP to Apple to demand a replacement as the large number of reports of others facing similar issues makes it look like a recurrence of a similar GPU-related failure that resulted in them doing a recall. However, graphics are extremely slow, even just transitions when minimizing windows. This time the machine booted all the way through. Mkdir /Disabled_System_Library_Extensions When trying to boot Ubuntu Desktop or run the graphicstest in Grub the system would hang.Īt this point, running Apple Hardware Test hung right before the end of the standard test, possibly when doing a video test.īased on the advice in the Apple Discussions posts above I did the following: Verbose safe boot (Cmd+Shift+V) output everything that I'd expect to see but would then hang as described above.Īfter coming across more posts online of GPU related problems I revisited this as the cause:Īttempting to boot Ubuntu from a USB flash drive, I could only get as far as Grub. I also ran the Apple Hardware Test many times without it finding any issues.

Boot from OS X installation on USB drive.

Boot into recovery (including Internet Recovery).

Unsuccessfully, I tried the following, with each continuing to hang as described above: Initially I suspected hard-drive corruption and went about trying to remedy that. The boot would progress through the grey screen with the Apple logo and spinner, but just when it seems it should have switched to the login screen the Apple logo and spinner would disappear and hang on a blank grey screen. Last night I increased the RPM and SMCFanControl became unresponsive which is why I forced the computer to shut down because I couldn't reduce the fan speed back to normal.Įarly 2011 MacBook Pro, OS X Yosemite (10.My MacBook Pro 15" Late 2011 (MacBookPro8,2) with AMD Radeon 6770M exhibited display corruption and associated system crashes/resets over a period of two weeks before it entirely failed to boot. I have been using SMCFanControl to monitor it, if the computer has been feeling hot I have been increasing the RPM for a minute to cool it just to be safe until the new fan arrives. My left fan is faulty, I have ordered a new one online. I'm at a loss, any help would be greatly appreciated. So basically everything other than Single User mode ends up at a blank grey screen.

I have a bootable Yosemite USB, holding option I can select that but it just brings up the Apple and status bar then grey screen.

The image of my hard drive that appears has a custom icon that I haven't used for at least 5 years which is very odd indeed.

Holding Option I can select my disk but there is no Recovery Disk displayed.

The Internet Recovery globe and status bar appear followed by the Apple and status bar then grey screen.

I can't get into Safe Mode, I just get the Apple and status bar followed by grey screen.I can get into Single User mode, using "fsck -fy" it reports that everything is OK.I hear the chime, the Apple appears with the Yosemite status bar underneath, it takes a long time to get about halfway then both the Apple and status bar disappear leaving just a blank grey screen. I updated to Yosemite on Saturday and everything has been working fine, I have been able to shut down and startup as normal until today.Ī couple of days ago I forced my Early 2011 MacBook Pro to shut down and now it will no longer get to the login screen.