Sudo Dmesg

Discussion in 'MacBook Air' started by McGilli, Dec 19, 2008.

  1. macrumors 6502

    Joined:
    Nov 11, 2008
    #1
    Hello,

    can someone please run 'sudo dmesg' from a terminal window - this will open your last boot log.

    I am trying to determine why my MBA takes so long to get past it's initial power on sequence - in the log I have this a few lines down about no matching GPU's:

    IGPU: family specific matching fails
    Matching service count = 1
    Matching service count = 2
    Matching service count = 2
    Matching service count = 2
    Matching service count = 2
    Matching service count = 2
    Previous Shutdown Cause: 5
    NVDANV50HAL loaded and registered.
    IGPU: family specific matching fails
    IGPU: family specific matching fails
    IGPU: family specific matching fails
    Matching service count = 0
    AirPort: Link Down on en0
    AppleIntelCPUPowerManagement: initialization complete
     
  2. thread starter macrumors 6502

    Joined:
    Nov 11, 2008
    #2
    Solved

    A Hardware reset COMMAND/OPTION/R/P has resolved the issue.
     
  3. macrumors 68000

    HiFiGuy528

    Joined:
    Jul 24, 2008
    #3
    What does hardware reset do?
     
  4. macrumors 6502a

    Joined:
    Dec 1, 2007
    #4
    Did you post 2 threads for the same issue?
     
  5. thread starter macrumors 6502

    Joined:
    Nov 11, 2008
    #5
    Well - internally I am not sure.

    But aside from the fact it cut off 35 seconds from my POST time when powering on - once into OSX - i loaded LOGIC PRO

    and it seemed to have to rescan and ... well - setup all of the internal audio architecture on the machine. Logic took a good 30 seconds sitting there running off all kinds of jargon about audio devices etc etc....

    I can't find anything on the web about this hardware reset key combo?!?
     

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