JLSELWYN

Q: El Capitan Bugs: USB Ports Not working + Shut down / Restart Problems

Since I updated to El Capitan, a couple of big issues:

 

1) My USB ports are not working properly. My superdrive won't get any power, so can't load any CDs. My USB mic (which worked fine with Yosemite) shows briefly as connected, and then immediately drops off. External hard drives, strangely, seem to work ... if intermittently. Huge problems here as I need to use my mic and CD drive, etc.

 

2) I can't shut down nor restart! When I try, the screen clears the desktop except for the background image, and then... nothing. I have to reboot and shut down manually by holding the power button every time.

 

This is on a mid-2012 Macbook Pro Retina.

 

I've reset the P Ram, I've reset the SMC, I've cleared my login items, and I've done a second clean re-install of El Capitan.

Any ideas? Thank you!

MacBook Pro with Retina display, OS X El Capitan (10.11)

Posted on Oct 4, 2015 6:28 PM

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Q: El Capitan Bugs: USB Ports Not working + Shut down / Restart Problems

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  • by bessmyra,

    bessmyra bessmyra Oct 5, 2015 8:07 AM in response to JLSELWYN
    Level 1 (0 points)
    Oct 5, 2015 8:07 AM in response to JLSELWYN

    I haven't checked out all the multiple problems you mentioned except the restart and shut down. I found a temporary solution to that by using the Guest side. In System Preferences Users and Groups change your settings to show your name or icon in the right side of the menu bar, click on that, go to Guest side and sign out from there or just go to Login Window and sign out from there. I shortened my password to make this faster.

  • by Conyous,Helpful

    Conyous Conyous Oct 5, 2015 11:00 AM in response to JLSELWYN
    Level 1 (9 points)
    iPhone
    Oct 5, 2015 11:00 AM in response to JLSELWYN

    I have exactly the same problem. My USB-Hubs aren't working anymore. If I plug in the Apple Keyboard to the USB it works, but nothing else does.

  • by JLSELWYN,

    JLSELWYN JLSELWYN Oct 5, 2015 11:03 AM in response to Conyous
    Level 1 (3 points)
    Oct 5, 2015 11:03 AM in response to Conyous

    I've had 3 support phone calls with Apple. They've had me do a few OS re-installs, but the problem persists.

    I've been told "This is one of the strangest problems we've ever heard."

    And that perhaps it's a hardware issue... but again, everything was working fine in Yosemite.

     

    Taking it to the Apple store today for a diagnosis. I'll update here if I get a solid answer on things.

  • by Old Toad,

    Old Toad Old Toad Oct 5, 2015 11:25 AM in response to JLSELWYN
    Level 10 (141,336 points)
    Mac OS X
    Oct 5, 2015 11:25 AM in response to JLSELWYN

    See if the info in this topic will help: usb el capitan

    OTsig.png

  • by Hiwatt88,

    Hiwatt88 Hiwatt88 Oct 5, 2015 11:27 AM in response to JLSELWYN
    Level 1 (0 points)
    Oct 5, 2015 11:27 AM in response to JLSELWYN

    Check library>extensions for Native Instrument kext-files or other third party kext-files, put them in a temp folder or something one by one.

     

    My MBP wouldn't reboot with the NI kext-files in the extensions-folder.

  • by mmreview,

    mmreview mmreview Oct 6, 2015 8:35 PM in response to JLSELWYN
    Level 1 (0 points)
    Oct 6, 2015 8:35 PM in response to JLSELWYN

    MacBook Pro late 2011, 16 GB. Plustek 8200i AI USB film scanner with Silverfast seems to lose connection randomly and hangs after El Capitan installation. Tried PRAM reset and SMC with no improvement.

  • by JLSELWYN,

    JLSELWYN JLSELWYN Oct 6, 2015 11:02 PM in response to JLSELWYN
    Level 1 (3 points)
    Oct 6, 2015 11:02 PM in response to JLSELWYN

    Per Apple's recommendation, I went to the Apple store for a hard drive reformat and square one reinstall of El Capitan.

    This did not solve either the USB nor the shut down/restart problems.

     

    Hopefully this becomes a known issue to Apple and will be fixed soon with an update...

  • by gkunapa,

    gkunapa gkunapa Oct 8, 2015 4:44 AM in response to JLSELWYN
    Level 1 (0 points)
    Oct 8, 2015 4:44 AM in response to JLSELWYN

    SSame problems all around, I have reinstalled several ( about 7) times the El Capitan ...and then reformat my SSD Drive , download the Yosemite and made a boot SD with the YOSEMITE.Finally I installed the Yomesite, but I can not recover my file s from my external NAS throuhgth Time Machine !!! Hope for a quick solution from Apple !!! Such a waist of time and ....

  • by Old Toad,

    Old Toad Old Toad Oct 8, 2015 8:21 AM in response to gkunapa
    Level 10 (141,336 points)
    Mac OS X
    Oct 8, 2015 8:21 AM in response to gkunapa

    Have you tried resetting the SMC?  Resetting the System Management Controller (SMC)

  • by Cablephil,

    Cablephil Cablephil Oct 8, 2015 3:42 PM in response to JLSELWYN
    Level 1 (0 points)
    Oct 8, 2015 3:42 PM in response to JLSELWYN

    I have the same USB port problem.  I can watch my printers go to idle then offline back and forth - they went offline full time after about 5 minutes.  Second clean install.  I have a mid-2007 24" iMac using all USB drives including my boot drive.  Drives appear to work OK but my ScanSnap, Brother and Canon printers, Epson V600 do not want to work full time.  ScanSnap worked, did a scan then bounced on and off line like the printers now off line. If I boot via another disk on same hub into 10.5 everything works just fine, so I am pretty sure that this is a software issue, not hardware, unless it has something to do with the old USB drivers on older machines.

     

    Sure wish Apple would fix - this is a big problem.

  • by JLSELWYN,

    JLSELWYN JLSELWYN Oct 8, 2015 3:45 PM in response to JLSELWYN
    Level 1 (3 points)
    Oct 8, 2015 3:45 PM in response to JLSELWYN

    Latest update:

     

    I returned to the Apple store again. The genius bar determined there is one of my applications or files someplace that is causing my issues.

    Again, I'm unable to use certain USB devices, unable to shut down, unable to restart, unable to log out. Have to reboot/shut down manually every time.

     

    We removed certain kext files, removed any suspicious application files, basically tried everything in the book.

    They said it's impossible to isolate what single file might be causing these misfires.

     

    So the problems remain - and the next suggestion is that I completely reformat my computer, do a fresh OS install, and then back up user data ONLY from time machine (i.e. do NOT restore applications). This is going to be annoying as I'll have to re-install all my applications, but I guess it's the next thing to try.

  • by Cablephil,

    Cablephil Cablephil Oct 8, 2015 4:10 PM in response to JLSELWYN
    Level 1 (0 points)
    Oct 8, 2015 4:10 PM in response to JLSELWYN

    According to some of the research I have done, El Capitan has a new USB stack which introduces all sorts of questions. I am skeptical of the solution offered by the genius as they have made some pretty awful suggestions to some of my friends. How old is your computer?

  • by JLSELWYN,

    JLSELWYN JLSELWYN Oct 8, 2015 4:16 PM in response to Cablephil
    Level 1 (3 points)
    Oct 8, 2015 4:16 PM in response to Cablephil

    I have a mid 2012 MBP Retina.

    I too am skeptical about this being the solution, but am willing to try. I could use a fresh start anyhow as I have tons of old apps going unused.

     

    Beyond the USB issues, I'm really hoping this fixes the current inability to shut down / restart / log out.

    Will update here if it works...

  • by JLSELWYN,Solvedanswer

    JLSELWYN JLSELWYN Oct 9, 2015 11:36 AM in response to JLSELWYN
    Level 1 (3 points)
    Oct 9, 2015 11:36 AM in response to JLSELWYN

    UPDATE - problem mostly fixed:

     

    I backed up the computer, erased my entire internal disk, ran an internet recovery (which strangely only allowed me to recover Mountain Lion OS) - then updated to El Capitan.

     

    Instead of running a complete time machine backup, I copied over select user files - documents, music, photos, videos, etc.

    I'm re-installing all apps from scratch.

     

    For now, this has fixed the following:

     

    - Superdrive via USB is now working

    - Restart / Shut Down / Log Out User are now working

     

    Regarding my USB mic (Blue Yeti Pro), I emailed the manufacturer and they said this is a known issue with Blue USC mics.

    They said they're awaiting a fix from Apple on that front.

     

    So, it's a square one reinstall of El Capitan, copying over user files a la carte, and reinstalling all apps from scratch.

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