Q: Reboot fail after installing El Capitan help!!

THX, just click this helped me :-)  I can get many points and be a official Mac-Guru... LOL!

Anyways, glad to help, as these threads and researching the Net helped me...

I turn it on and starts perfectly, works normal.

Then when I want to Shout Down or Restart I hit the option (apple/restart or shoutdown) and all the programs start closing as normal but the process do not finish, the screen stays with the background image and the Dock.

I can reopen the programs from there and work normally but it doesn't shout down nor restart. All I can do to turn it off is force the power button.

This is happening since I installed El Capitan, is a Mac Book Pro Retina Mid 2012. I've never had a problem with it.

Hi,

I tried all steps of the kext solution, but my kext.txt file comes out empty.
so if i try to reboot it's the same, apple logo and bar to zero, stuck there.
i already reinstalled el capitan from recovery mode three times to try different solutions.
any suggestion?
never reboot again for life it's not ideal

This is a different problem than addressed in this thread... Anyway, the reason is most likely a running program that causes shut down / restart to be cancelled.

First thing to do is CMD -Tab so see if everything is closed, then check activity monitor so see what is running.

I think you either made a typing error in Terminal, or you did not startup from your HD. 

There are absolutely Kext files on your HD. Maybe they are all signed, but one of these can cause your trouble...

seems like i did some kind of error in terminal (not typing because every time i paste/copied your line), but anyway this time it did work.

so thanks!!

Thanks GS, I checked the activity monitor and apparently the problem was an application called Air Display Host, I uninstalled it and is working fine now

It may not be compatible with El Capitan or something. Still feeling that the restart is not as smooth as normal but at least it restart. Thanks again!

Finding and removing the kexts solved my problem completely.  I preferred the approach of booting into recovery, re-installing OS X then searching and deleting, as described by pwa65 on page 4. 

Thanks to all the heroes in this thread, and elsewhere, who diagnosed it, tested it and took the time to report it here.  Better service from volunteers here than from Apple, that's for sure.

Why couldn't Apple's own installer program check for these problems and fix or report them first, or fail gracefully rather than abruptly if they prove unmanageable?  The problem was first recorded during beta testing so it's not as if they did not know.

Looks like the golden age when Apple made hassle-free products and cared about its customers is drifting into history.  As someone else said Steve Jobs would have fired the whole release team.  Eventually Apple will go the way of all the other computer giants who had their moment of greatness then became too arrogant to respond.

Thanks Luca,

Altima's SyncMate kext came up as loaded in my EtreCheck report (it's an Android sync utility for the uninformed which I don't use - it was poor software). I've downloaded the uninstall utility from their website (which wasn't signed or authorised - I had to bypass the security for non-App Store apps) and ran it. Of course, it forced a re-boot and I was very nervous (having completely reinstalled El Capitan x2 now to get past the issue!). I got through the re-boot in record time. I've not yet chanced my arm with a reboot initiated by me, but it looks promising. EtreCheck confirms the kext is no longer loaded.

Eamonn

Cheers for the step by step instructions, I know have a MacBook Pro that'll reboot now. Had 21 Kext files to move out of the /System/Library/Extensions folder.

OK gurus and hackers... here is my story, similar but some twists;

10.10.5 on Late 2009 Mini runs great. 10.11 install gets to about T-7 minutes then reboots. It goes into a Panic cycle, rebooting continuously.

Have done TM restore to 10.5 several times, then retried... have removed several apps and kexts that might be interfering, same results in many subsequent attempts (I have lost count). 

I can do a clean install with no issues, but when I migrate all App, User, and System data from TM, goes into the same rolling reboot. I have even tried restoring just user files, just apps, and just system data, always gets back to rolling reboots.

I have tried CMD + R and re-installing the 10.11 install, no help.

Boot Drive is OCZ-Agility4 SSD with Trim Enabled via the new Apple TRIM support for third party SSD in 10.10.4.

Also, I have cDock\SIMBL installed which requires SIP disabled in 10.11, but my other machine (Mac Pro 3,1) upgraded fine with this in place.

So, wondering if TRIM on third party might be the culprit? Will try KEXT fixes again in the next round in case I missed any. But, have any of you heard of third party TRIM issues with 10.11? I have not found anything to that effect in dozens of forum searches.

Turned out to be kexts from a previous Mac.

Too bad SIP can't be disabled during the upgrade. Or maybe warnings that unsigned\incompatible kexts are present and give you the option to remove before upgrading.

Latest version of OSX checks for bad kexts during reboot.

However I had a new warning today (having cleared out all the offending kexts).  "wado_d.kext incompatible".

When I searched for wado_d.kext I could not find it anywhere.  Anyone know what it is, how to find it and how to remove it??

Strange that OSX now gives the warning message but no advice on what to do.

Posting here because it is likely connected to the problem reported in this thread.  Will also post a new thread.

A quick search: could be from Trusteer an antivirus app.

Thanks.  Most likely correct.  I did have Trusteer and it was flagged as no longer compatible with El Capitan.

I posted this topic as a new thread elsewhere on the forum.  On that thread someone kindly explained that OSX now puts such kexts in a quarantine folder where they cause no further harm.  Feeling more relaxed.

Thanks again.