Mac pro locking up

Discussion in 'Mac Pro' started by PmattF, Sep 13, 2008.

  1. PmattF macrumors member

    Joined:
    Dec 28, 2006
    #1
    I have a first gen mac pro, I am getting a sporadic lock up where the screen freezes, and it stops responding to keyboard and mouse input (and it becomes inaccessible from the network). This has happened in normal use twice.

    I have tried several times to run the Apple Hardware Test off the original Os X disk, but it locks up up every time in that mode. It also locks up immediately when I boot into single user mode (which I did in order to attempt to run memtest). At least it refuses keyboard input in Single User (with my normal bluetooth keyboard, as well as a USB keyboard that I borrowed).

    I did run memtest from a terminal window while logged in normally, and it was able to access 11 of my 12 gigs of RAM, and it passed, so I guess I am 11/12ths sure it is not bad RAM.

    When the system does lock up, when I do a hard power cycle with the button on the front of the machine, it will not reboot -- my screen remains black. If I let it sit for a minute or two like that, then power cycle again, it does boot up normally. This is very consistent on these lockups - no boot the first time, works fine the second.

    In general, I think it is running hotter than it used to -- at least it seems like the fans are running at high speed more than they used to, but I can't swear to, or quantify that.

    I was on the phone with Apple tech support for about an hour yesterday, and he finally decided it had to be taken in for service.

    I wanted to see if anybody here has any ideas what the problem might be, especially if it is something I could fix myself, before I lose the machine for however long it will take Apple to fix it.
     
  2. kalex macrumors 65816

    Joined:
    Oct 1, 2007
  3. matt321 macrumors member

    Joined:
    Oct 27, 2007
    #3
    Do you have anything plugged into your I/O ports? USB, Firewire, etc...? I know that I have had issues in the past with iPods and a USB headset. You might try unplugging everything except Ethernet to see if that solves your problem.
     
  4. PmattF thread starter macrumors member

    Joined:
    Dec 28, 2006
    #4
    I ran DiskWarrior and everything is working way better in general -- I hadn't realized quite how many spinning beachballs I was seeing until now that I am not seeing any.

    The total lock up (which did not involve a beachball) was so sporadic that it is hard to say whether that is fixed, but I am keeping my fingers crossed.
     

Share This Page