Multi777x
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Q: HELP. My mac pro has had a kernel attack on startup

My early 2008 Mac pro for the past two days will boot 40% through on the loading bar screen then (what I assume is a kernel attack) I hear a click and it shuts down. Ive tried SMC, PRAM,, etc with non works. I try PRAM reset and it just shuts down immediately. I try holding down D and it rather completely ignores the input or presents me with a flashing folder with a question mark on it. If it makes a difference I did install 16GB of RAM a few months before but one of the sticks of RAM sometimes doesn't register leaving me with 14gb of RAM. I just kept it in there. This has also happened a month ago but it only lasted for a day. I appreciate and feedback thank you in advancedt

Mac Pro, OS X Yosemite (10.10.4)

Posted on Jul 28, 2015 9:38 AM

by Grant Bennet-Alder,Solvedanswer
Grant Bennet-Alder Grant Bennet-Alder
Level 9 (60,936 points)
Desktops
A:

There are a lot of caveats. Get a start with this user tip:

 

User Tip: Mac Pro silver tower (2006-2012) Replacement Graphics cards


.

Posted on Aug 5, 2015 6:15 PM

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Multi777x

Q: HELP. My mac pro has had a kernel attack on startup

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  • by Multi777x ,

    Multi777x Multi777x Aug 4, 2015 2:01 PM in response to Grant Bennet-Alder
    Level 1 (0 points)
    Aug 4, 2015 2:01 PM in response to Grant Bennet-Alder

    I did control eject with no success. HOWEVER I just started mashing the keyboard and it made a noise. I then thinned out the options and located that command, control, eject made this thumping noise. It's hard to describe but it's not a beep but I remember it's another normal system sound with the same function as the system beep. I then played with my mouse and I guess I pressed something because then any stray key I pressed made the system noise thumping noise. Does this mean it works?

  • by Multi777x ,

    Multi777x Multi777x Aug 4, 2015 2:31 PM in response to Multi777x
    Level 1 (0 points)
    Aug 4, 2015 2:31 PM in response to Multi777x

    There seems to be lots of messages about the cache. These are some of the messages from verbose mode

    "Warning: couldn't block sleep during cache update"

    "Warning: proceeding w/o Diskarb"

    "Bootcachecontrol: unable to open /var/db/bootcache.playlist: 2 no such file or directory"

    Bash:  /etc/rc.server: no such file or directory

    Bash:  /etc/rc.installer_cleanup: no such file or directory

  • by Grant Bennet-Alder,

    Grant Bennet-Alder Grant Bennet-Alder Aug 4, 2015 3:33 PM in response to Multi777x
    Level 9 (60,936 points)
    Desktops
    Aug 4, 2015 3:33 PM in response to Multi777x

    The boot up sequence you posted looked very ordinary. I saw nothing alarming there.

  • by Grant Bennet-Alder,

    Grant Bennet-Alder Grant Bennet-Alder Aug 4, 2015 3:37 PM in response to Multi777x
    Level 9 (60,936 points)
    Desktops
    Aug 4, 2015 3:37 PM in response to Multi777x

    another normal system sound with the same function as the system beep.

    then your system beep probably got set to that sound.

     

    Normally, when you just bang away on the keyboard, nothing happens. If you want to find out for sure, run the experiment again, and this time just type S-for-Sleep, and see if it goes to sleep. THAT will not happen on a random screen or on a crashed-out Mac.

  • by Multi777x ,

    Multi777x Multi777x Aug 4, 2015 4:57 PM in response to Grant Bennet-Alder
    Level 1 (0 points)
    Aug 4, 2015 4:57 PM in response to Grant Bennet-Alder

    But doesn't control eject only show the sleep,restart,shut down when you are logged in?  Also how will I know if it goes to sleep if there's no visual indicator

  • by Grant Bennet-Alder,

    Grant Bennet-Alder Grant Bennet-Alder Aug 4, 2015 5:25 PM in response to Multi777x
    Level 9 (60,936 points)
    Desktops
    Aug 4, 2015 5:25 PM in response to Multi777x

    S will put it to sleep (and the power light should blink slowly).

  • by Drew Reece,

    Drew Reece Drew Reece Aug 4, 2015 5:36 PM in response to Multi777x
    Level 5 (7,547 points)
    Notebooks
    Aug 4, 2015 5:36 PM in response to Multi777x

    The Mac goes quiet when asleep & the power LED should pulse. After it boots you can also tap the power button to sleep (assuming it hasn't hung totally).

     

    The login window does stop that dialog appearing, so if auto login is disabled it won't work. You may be able to use the arrow keys & tap return to select your user account & then try to enter the password, but working blind is difficult. Escape should back you out of the password entry back you the list of users.

     

    The last account should be a guest if you want to try that (again it needs to be enabled), tapping right blindly should get you to it. It should let you use the cmd+eject test after it logs in.

  • by Multi777x ,

    Multi777x Multi777x Aug 5, 2015 11:33 AM in response to Drew Reece
    Level 1 (0 points)
    Aug 5, 2015 11:33 AM in response to Drew Reece

    Ok so after 45 mins of desperate fiddling I think I did it. I managed to log into my account and used the control eject key to give me the options. Then I pressed return and IT SHUT DOWN!! VICTORY (or I hope). Just need your guys opinion but at this point I'm pretty sure it's a faulty graphics card. Now do you guys have opinions what replacement graphics card I should get (pefer not a 8800GT again lol). I'm willing 300$ for this new card. All suggestions welcome.

  • by Grant Bennet-Alder,Solvedanswer

    Grant Bennet-Alder Grant Bennet-Alder Aug 5, 2015 6:15 PM in response to Multi777x
    Level 9 (60,936 points)
    Desktops
    Aug 5, 2015 6:15 PM in response to Multi777x

    There are a lot of caveats. Get a start with this user tip:

     

    User Tip: Mac Pro silver tower (2006-2012) Replacement Graphics cards


    .

  • by Multi777x ,

    Multi777x Multi777x Nov 13, 2015 7:53 PM in response to Grant Bennet-Alder
    Level 1 (0 points)
    Nov 13, 2015 7:53 PM in response to Grant Bennet-Alder

    Hey guys. Just wanted to report back what happened. I ended up just getting a new 2015 rMBP. Thanks again for all your guys help!

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