13 Replies Latest reply: Oct 22, 2008 7:31 PM by boymilo
Richard4d Level 1 Level 1
Hello,

I have a 2005 Mac Mini PPC OS 10.4.11. This is the first problem I've had since purchasing the computer. This problem popped up out of nowhere. The screen goes black during startup just after I login into my account. I can hear the hard drive spin like it is finishing the startup process. The monitor power button blinks green.

I'm using the digital video cable. I tried switching to the VGA cable but the screen then goes black before the login screen.

The computer will startup in Safe mode.

I've tried Disk Utility (repair disk and repair permissions), Techtool Pro, Drive Genius, ColorSync Utility, Reset Pram, installed latest OS updates, and even re-installed the System twice (once because I removed all the Extension files and then the computer would not startup at all).

I've also tried removing cache files, plist files, startup files, preference files, and some or all of extension files.

The only applications I have recently installed were QuickTime Pro and a .flv movie player; both about a week before this problem started. I tried to uninstall them but could not figure out how.

What is the problem? How can this be fixed?

Thanks.
Richard

Mac Mini PPC, Mac OS X (10.4.11), ViewSonic VX922 Monitor
Solved by BDAqua on Aug 12, 2008 11:07 AM Solved
Safe boot again, drag these files to the Desktop, reboot for a try...

/Users/YourUsername/Library/Preferences/ByHost/com.apple.windowserver.<any12digi tNumber>.plist

/Library/Preferences/com.apple.windowserver.plist
  • BDAqua Level 10 Level 10
    Hi Richard4d, and a warm welcome to the forums!

    Try a Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.

    Report back.
  • Richard4d Level 1 Level 1
    Hello BDAqua,

    Tried it. It did not help. The problem persists.

    Thanks.
    Richard
  • Richard4d Level 1 Level 1
    Another thing:
    I just tried to change the Display Resolution (from 1280x1024 to 1280x960) in System Preferences and the screen went black. I could not exit out. So I had to reboot.

    Could this be a monitor / video driver problem? Or was that just a result of being in Safe Mode?

    I am not using ViewSonic drivers. ViewSonic drivers only work with OS 9.

    How do you repair monitor / video drivers?
  • BDAqua Level 10 Level 10
    Safe Boot uses a safe resolution, used to be 800*600, but what does yours boot into in safe mode?

    There are some plists that might be corrupted, give me a few to figure out which ones.
  • Richard4d Level 1 Level 1
    In Safe Mode, the resolution is 1280 x 1024.

    I tried switching to 800 x 600 and the screen went black again. I had to reboot to see the screen again.

    Also when I click on Detect Displays, nothing happens. I believe it use to highlight the Resolutions that were compatible with the monitor.
  • BDAqua Level 10 Level 10
    Safe boot again, drag these files to the Desktop, reboot for a try...

    /Users/YourUsername/Library/Preferences/ByHost/com.apple.windowserver.<any12digi tNumber>.plist

    /Library/Preferences/com.apple.windowserver.plist
  • Richard4d Level 1 Level 1
    That worked! It's fixed!

    Thank you!!!
    Richard
  • Richard4d Level 1 Level 1
    p.s.

    Thanks for the welcome.
  • BDAqua Level 10 Level 10
    Great news Richard, thank you!
  • Richard4d Level 1 Level 1
    Hello,

    The black screens are back. It's happening the majority of the time but in a random manner.

    It happens with a cold startup, reboot, when the screen saver kicks in, or while the screen saver is running; but not every time.

    Repair Disk Permissions: sometimes works.

    Sometimes the start up will work when I hold down the Apple+Option keys.

    Safe Boot works and sometimes it will start up ok after a Safe Boot.

    I looked for the files:
    /Users/YourUsername/Library/Preferences/ByHost/com.apple.windowserver.<any12digi tNumber>.plist

    /Library/Preferences/com.apple.windowserver.plist

    but they are nowhere to be found. I removed them in August when this first started.

    Any suggestions what the problem is?

    Thanks.
    Richard
  • Richard4d Level 1 Level 1
    The problem has started again.
  • BDAqua Level 10 Level 10
    It sounds like maybe the HD is starting to go out, do you have an external Firewire drive you can install to?

    Might be time for An Archive & Install, which gives you a new OS, but can preserve all your files, pics, music, settings, etc., as long as you have plenty of free disk space, if we haven't done that yet...

    http://docs.info.apple.com/article.html?artnum=107120

    But I don't give that too much chance of curing it
  • boymilo Level 1 Level 1
    Howdy. I have Had the same problem as you in regards to a ViewSonic Monitor and the Mac Mini. This is my post:

    Monitor failure when switching resolutions

    Using Displays with the Mac mini, Apr 1, 2008, Replies: 2

    Running 10.5.2 on Mac Mini G4 1.42 Ghz with ATI Radeon 9200, 32 MB VRAM and ViewSonic VX922
    When switching resolutions from 1280x1024 to 800x600 or vice versa, the monitor will cut to black and the power light on the monitor switches from solid green to flashing green. Only by combinations of powering down the mini and starting it up again with the monitor on or off will bring the monitor back to life. This problem makes it difficult to play World of Warcraft amongst other games. Any feedback in regards to this problem would be appreciated.
    Thank You!

    At this point, I am unable to switch Monitor resolutions. If I do, the monitor goes black, and I have to power everything down and wait a while before I can restart.

    I've resigned myself to not switching resolutions, but I'm wondering if you've had any luck.

    Thanks for your time!
    Kevin