Mid 2012 MBP Running Hot after 10.10.3 Update

Discussion in 'OS X Yosemite (10.10)' started by soccerrocks314, Apr 21, 2015.

  1. soccerrocks314 macrumors newbie

    soccerrocks314

    Joined:
    May 15, 2012
    Location:
    Auburn, AL
    #1
    So I update my MBP two days ago. With in those two days I have noticed that when waking up from sleep mode or opening the lid that with in 5 minutes the underside is really warm while doing simple task like browsing safari or checking email. The only programs running are mail and safari.

    More Specifically:
    Temperature Gauge (App) Reads GPU 1 Diode around 98 degrees celsius ​
    Activity Monitor shows that a process called "discoveryd" is using close to a 100% of the CPU​

    A restart of the computer shows "discoveryd" using 0.2% of CPU and the temperature of the GPU 1 Diode immediately starts to cool down to a pretty consistent 52 degrees celsius.

    All of the problems above can be replicated and solved by a restart but reoccur when the lid is closed.

    Anyone else suffering anything similar or know of a solution to the problem?

    Thanks for your help in advance!


    MBP Specs:
    Mid 2012
    2.9GHZ i7
    8GB Ram
    512 GB Samsung SSD 840 Pro
     
  2. soccerrocks314 thread starter macrumors newbie

    soccerrocks314

    Joined:
    May 15, 2012
    Location:
    Auburn, AL
    #2
    Solution!!!

    Well at least this worked for me and hopefully the same for you! I found this solution from this apple support community page https://discussions.apple.com/thread/6662210?start=60&tstart=0 . Best of Luck!

    The fix that works in many (all?) cases for the 'discoveryd 100% CPU on Yosemite' issue is

    Use 'Finder > Go' to go to this folder:

    /Library/Preferences/SystemConfiguration/

    Delete the file 'preferences.plist' and restart your Mac. Google for the above path if you want further details.
     

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