After the 10.6.4 Upgrade My Macbook Runs Way Hotter

Discussion in 'macOS' started by wildpod, Jun 16, 2010.

  1. wildpod macrumors newbie

    Joined:
    Jun 16, 2010
    #1
    Before the upgrade, my Macbook 5,1 used to run at 50ºC (122 ºF). It now runs at 65-70 ºC (149-158 ºF) with only safari (and no flash) running. Activity Monitor shows no process is using more than 10% of CPU when idle. Is there any reason for it to be running this hot?

    Thanks for the help.
     
  2. satcomer macrumors 603

    satcomer

    Joined:
    Feb 19, 2008
    Location:
    The Finger Lakes Region
    #2
    Well look to see if you have any older Safari plugins. Apple has changed the plugins in Safari works and most all of the older Safari plugins are now broken.
     
  3. wildpod thread starter macrumors newbie

    Joined:
    Jun 16, 2010
    #3
    Thanks for your suggestion.

    I checked to see if a plugin was causing the problem, but the only plugin i have installed is click to flash.

    Even with no apps running the temperature is 70 degrees. I only noticed the increase when last night I upgraded to 10.6.4. Last week (?), when I upgraded to Safari 5, there was no noticeable change, other than the changes to safari.
     
  4. Glideslope Suspended

    Glideslope

    Joined:
    Dec 7, 2007
    Location:
    A quiet place somewhere in NYS.
    #4
    No increase in temp on my i7 MBP. Safari 5 runs much faster in 10.6.4 IMO. Reset your PRAM and see if it helps. I always reset PRAM after a OS update.:apple:
     
  5. TRUCRACKER macrumors 6502

    TRUCRACKER

    Joined:
    May 31, 2010
    Location:
    VA
    #5
    I'm having issues. When all I have running is Chrome, iTunes, and Skype, the fans usually never go past 1997rpm. Now with the update, they are 2400+.
     
  6. Lone Deranger macrumors 65816

    Lone Deranger

    Joined:
    Apr 23, 2006
    Location:
    London
    #6
    Same here on a 17" MBP 5.2.
    Used to have fans running at 2000RPM, 60°C under normal load.
    Now I'm seeing fans at 2400RPM, 70-75°C under similar conditions.
    Nothing peculiar in Activity Monitor. I'm confused.
     
  7. TRUCRACKER macrumors 6502

    TRUCRACKER

    Joined:
    May 31, 2010
    Location:
    VA
    #7
    Glad to see I'm not the only one with fan problems. I just played TF2 and the fans were at at 5900 RPM. I don't think they ever even hit 5200 before...
     
  8. wildpod thread starter macrumors newbie

    Joined:
    Jun 16, 2010
    #8
    Thank you very much! Reseting the PRAM fixed the issue, at least momentarily. The temperature has gone down to a more normal 45 degrees Celsius.
     
  9. Lone Deranger macrumors 65816

    Lone Deranger

    Joined:
    Apr 23, 2006
    Location:
    London
    #9
    My MBP's temperatures and fan speeds also appear to have returned to normal.
    When checking Activity Monitor I noticed that somehow the 10.6.4 update had forced the MBP to default back to the 32-bit kernel. Been using a System Preferences plugin called 'SixtyFourSwitcher' to boot into the 64-bit kernel instead, but upon opening System Preferences I saw that it had indeed been set back to 32-bit. I changed it back, rebooted and temps were back to normal.
    Still did the PRAM reset mentioned above just in case. :)
     
  10. Synablade macrumors newbie

    Joined:
    Jun 17, 2010
    #10
    PRAM Reset saved my mac

    After the upgrade to 10.6.4 my mac was running at 3000rpm speed and 80˚C!!!

    Thanks to this forum i tried the PRAM Reset:
    http://support.apple.com/kb/ht1379

    And now its back to Normal again!

    Question i do have is, what is stored in PRAM/NVRAM which makes the MAC run hotter than before the update?? Very strange to me...
    But i'm glad that there IS at least a fix!

    Cheers!
    Syn
     
  11. celticpride678

    Joined:
    Feb 15, 2009
    Location:
    Boston, MA
    #11
    Contents of PRAM:

    Status of AppleTalk
    Serial Port Configuration and Port definition
    Alarm clock setting
    Application font
    Serial printer location
    Autokey rate
    Autokey delay
    Speaker volume
    Attention (beep) sound
    Double-click time
    Caret blink time (insertion point rate)
    Mouse scaling (mouse speed)
    Startup disk
    Menu blink count
    Monitor depth
    32-bit addressing
    Virtual memory
    RAM disk
    Disk cache
     
  12. TH-Gunner macrumors regular

    Joined:
    Mar 28, 2008
    #12
    My CPU is also running hotter with no app using more than ~5% of the CPU. I have already reset my PRAM, and the problem persists. I'll try again, and if that still doesn't work, I'll reset the SMC.

    I'm running a MacBook [2,1], by the way. And another PRAM reset didn't work...

    Ok, the SMC didn't work, either. Looks like I'm stuck with a computer that's gonna run hotter than it should... What a load of crap.
     
  13. Tim018 macrumors regular

    Joined:
    May 31, 2009
    #13
    If the pram reset didn't work try resetting smc also. Whenever the temperature spikes on my macbook for no apparent reason i reset both the smc and the pram and it seems to fix it one way or another...

    hope that helps

    tim
     
  14. TH-Gunner macrumors regular

    Joined:
    Mar 28, 2008
    #14
    Tried it and it didn't work.
     
  15. TH-Gunner macrumors regular

    Joined:
    Mar 28, 2008
  16. TH-Gunner macrumors regular

    Joined:
    Mar 28, 2008
    #16
    I think the 10.6.5 update may have fixed the problem.
     

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