fan noise on waking Mac Pro from sleep

Discussion in 'Mac Pro' started by nick_harambee, Oct 5, 2007.

  1. nick_harambee macrumors regular

    Joined:
    May 20, 2005
    #1
    Hi

    I bought a mac pro about a month ago and for the first couple of weeks i had normal fan operation, infact very quiet, but for the last couple of weeks every time i have tried to wake the Mac Pro from sleep I get a very loud fan noise which lasts about a minute (i am reminded of jet aeroplanes when i hear it!). Fan noise is generally also louder, and i am not sure if this is connected with adding more components - RAM and internal hard drives (all Apple Approved). Perhaps the added components can account for the overall louder level of fan noise, but i don't know about the excessive noise on waking from sleep. Does anyone have an idea what might be going on here?

    thanks

    nick
     
  2. Danksi macrumors 68000

    Danksi

    Joined:
    Oct 3, 2005
    Location:
    Nelson, BC. Canada
    #2
    Did you install the latest firmware update?

    My Mac Pro was really quiet, until I installed the last two firmware updates (which indicated in their summaries that they adjust the fan control).
     
  3. nick_harambee thread starter macrumors regular

    Joined:
    May 20, 2005
    #3
    have now installed latest firmware and still have the same issue. i have been led to believe on another forum that the fan behaviour i am experiencing is normal, but not sure why it didn't happen at first. the noise is enough to not want to put the mac pro to sleep!
     
  4. nick_harambee thread starter macrumors regular

    Joined:
    May 20, 2005
    #4
    on reflection, i think it is normal for the fan to run fast for a few seconds, but not for it to start slowly then get louder and louder until it is very loud and then gradually slow down, over say 45 seconds - 1 minute, which is what is happening every time i start up from sleep
     

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