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6836838

Suspended
Original poster
Jul 18, 2011
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Anyone else get this screen after installing? The login screen came up, but after entering details, I get this 'bricked' screen.

2vn2dme.jpg

[doublepost=1468157797][/doublepost]I installed the public beta from App Store from El Cap latest beta. Is there anything I can do, or is it Time Machine recovery time?
 

6836838

Suspended
Original poster
Jul 18, 2011
1,536
1,325
Good shout. Doesn't like my BT4 USB dongle. Unplugged and trying again.
[doublepost=1468159416][/doublepost]Hmm unplugged and still not happy.

After unplugged...

sdl1fm.jpg


Then I wait and it goes currupt:

2zohjlt.jpg


So how can I now switch back to the internal BT controller. It's seemingly looking for it still even after disconnecting? I was using a BT single on my MBP 2010 for MIDI stuff.
[doublepost=1468159660][/doublepost]Trying safe mode. Will report back.
[doublepost=1468159700][/doublepost]Same issue.
[doublepost=1468161595][/doublepost]Does anyone know how to disable Bluetooth in recovery mode prior to boot up?
 

MichaelDT

macrumors regular
Aug 18, 2012
204
221
You are missing a graphics driver for sure. Try booting recovery and if it loads then copy all graphics kexts via terminal to main partition and delete or rebuild kext cache.
 

6836838

Suspended
Original poster
Jul 18, 2011
1,536
1,325
I've gone back to recovering El Cap. I'll try again in beta 3. Standard Mid 2010 15inch but with a Samsung EVO SSD running latest firmware.

Thanks for your help.
[doublepost=1468200686][/doublepost]Recovery did load fwiw
 

6836838

Suspended
Original poster
Jul 18, 2011
1,536
1,325
So I installed on a new partition and everything is fine. I've also rebuilt the kexts cache etc using '
sudo touch /System/Library/Extensions/ && kextcache -Boot -U /' (after disabling crs). I'm too scared to upgrade to Sierra now, so I'm working to do a clean install on the new partition and will ultimately Time Machine restore Docs and Apps over to there from El Cap.
 

grahamperrin

macrumors 601
Jun 8, 2007
4,942
644
I encountered the prohibition sign more than once. If I recall correctly, the problem was not limited to Sierra.

https://forums.developer.apple.com/thread/49672#146867

… Disconnecting then reconnecting the drive – whilst the no entry sign was on screen – allowed startup to continue. Potentially nerve-wracking, but entertaining.

The visual corruption, in the second of your photographs in post 3, was part of that entertainment.

In my case it was not a missing graphics driver.

I'm glad that you worked around the problem in your case. If it recurs, feed the bug to Apple.
 
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