battery life and temperature issues on DP4

Discussion in 'Mac OS X Lion (10.7)' started by qoem, Jun 30, 2011.

  1. qoem macrumors newbie

    Joined:
    Jun 30, 2011
    Location:
    London
    #1
    hey, i don't know to which extent this is a known issue, but on my 2011 macbook pro 15" the fan is always on. i thought it was a graphics card issue but even after getting gfxcardstatus to work nothing changes.

    more importantly, this issue dramatically affects battery life, which is as low as 1h30 at full charge.

    does anybody experience this ?
     
  2. lfc macrumors regular

    Joined:
    Oct 20, 2010
    Location:
    Australia
    #2
    I would hope the fan is always on, otherwise you'll be looking at a very hot Mac.
    Normal fan speeds for a 2010 MBP is roughly 2000rpm for each fan (left and right). It should be the same for a 2011
     
  3. ssn637 macrumors 6502

    Joined:
    Feb 12, 2009
    Location:
    Switzerland
    #3
    Generally the 2011 MacBook Pro models require more cooling than the C2Ds, however I've also noted that my 2010 13" MacBook Pro is suffering from low battery life in Lion DP4 compared with Snow Leopard. While surfing and performing similar low-intensity tasks the system reports somewhere around 4 hours remaining on a full charge, whereas in Snow Leopard I easily obtain 6 (albeit with CoolBook undervolting active).

    I've especially noticed a problem with battery life after having closed the lid for a prolonged period (overnight, for example): capacity drops by at least 10% which is probably due to the resume feature in Lion. This is based on a clean installation of DP4 and the latest update (15.06.2011)
     
  4. qoem, Jun 30, 2011
    Last edited: Jun 30, 2011

    qoem thread starter macrumors newbie

    Joined:
    Jun 30, 2011
    Location:
    London
    #4
    by "the fan is always on" i meant that the temperature is quite high. the GPU is always hotter than 55 °C and the cpu is around 90 °C.

    also, no processes are eating the cpu so i'm quite puzzled.
     
  5. Atarikid macrumors regular

    Joined:
    May 14, 2011
    #5
    IMO this is not normal. I have a MBP 17 2011 i7 and temperature is always about 34°C. Fans are running at abut 2000rpm (not hearable). Only when I use a app that requires a lot of CPU it raises the temp. but that is normal.

    Take a look at the Activity Monitor and see if there is a process that uses a lot of CPU load.
     
  6. qoem thread starter macrumors newbie

    Joined:
    Jun 30, 2011
    Location:
    London
    #6
    as i said, there is none; strangely enough i solved the problem rebooting a couple of times; the CPU temperature is around 46°C, battery around 34°C, and the fan is quiet.
     

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