Display intermittently dies

Discussion in 'Mac Accessories' started by sajurcaju, Apr 12, 2008.

  1. sajurcaju macrumors newbie

    Joined:
    Feb 6, 2007
    Location:
    Maine
    #1
    We have a Mac Pro, 10.4.11, with four cores. It has a 23" ACD, which will die without any apparent clues as to why. Any guidance of how to troubleshoot the problem *greatly* appreciated. It often happens more than once a day. I have replaced the power supply, with no change in behavior. Some logs are appended below.

    When it dies, it seems to be just the display. Skype calls are not disrupted. The only fix is to reboot the machine via the button on the front.

    Thanks,
    Steve

    ---------------
    First, an extract from /var/log/system.log. This refers to a second log, which follows after the -------------------

    Apr 10 21:43:41 Big-Mac configd[34]: posting notification com.apple.system.config.network_change
    Apr 10 21:43:47 Big-Mac lookupd[639]: lookupd (version 369.6) starting - Thu Apr 10 21:43:47 2008
    Apr 10 21:44:00 Big-Mac kernel[0]: System Sleep
    Apr 10 21:46:48 Big-Mac kernel[0]: Enabling XMM register save/restore and SSE/SSE2 opcodes
    Apr 10 21:46:48 Big-Mac kernel[0]: Started CPU 01
    Apr 10 21:46:48 Big-Mac kernel[0]: Enabling XMM register save/restore and SSE/SSE2 opcodes
    Apr 10 21:46:48 Big-Mac kernel[0]: Started CPU 02
    Apr 10 21:46:48 Big-Mac kernel[0]: Enabling XMM register save/restore and SSE/SSE2 opcodes
    Apr 10 21:46:48 Big-Mac kernel[0]: Started CPU 03
    Apr 10 21:46:48 Big-Mac kernel[0]: System Wake
    Apr 10 21:46:55 Big-Mac kernel[0]: Intel8254x -- Link Down -- 00:17:f2:08:5c:1f -- called by enableHardware() --
    Apr 10 21:46:55 Big-Mac kernel[0]: -- Auto-Negotiation Advertisement Register (04d) = 0xde1
    Apr 10 21:46:55 Big-Mac kernel[0]: -- Auto-Negotiation Link Partner Ability Register (05d) = 0x0
    Apr 10 21:46:55 Big-Mac kernel[0]: -- Auto-Negotiation Gigabit Advertisement Register (09d) = 0xe00
    Apr 10 21:46:55 Big-Mac kernel[0]: -- Auto-Negotiation Gigabit Link Partner Ability Register (10d) = 0x4000
    Apr 10 21:46:55 Big-Mac kernel[0]: -- PHY Specific Status Register (17d) = 0x8000
    Apr 10 21:46:55 Big-Mac kernel[0]: Intel8254x -- Link Up -- 00:17:f2:08:5c:1e -- called by interruptOccurred() --
    Apr 10 21:46:55 Big-Mac kernel[0]: -- Auto-Negotiation Advertisement Register (04d) = 0xde1
    Apr 10 21:46:55 Big-Mac kernel[0]: -- Auto-Negotiation Link Partner Ability Register (05d) = 0x45e1
    Apr 10 21:46:55 Big-Mac kernel[0]: -- Auto-Negotiation Gigabit Advertisement Register (09d) = 0xe00
    Apr 10 21:46:55 Big-Mac kernel[0]: -- Auto-Negotiation Gigabit Link Partner Ability Register (10d) = 0x4000
    Apr 10 21:46:55 Big-Mac kernel[0]: -- PHY Specific Status Register (17d) = 0x6f48
    Apr 10 21:46:55 Big-Mac kernel[0]: Intel8254X -- Negotiated Speed: 100 Mb/s, Duplex: Full, Flow Control: Receive Paus
    e Enabled, Transmit Pause Enabled
    Apr 10 21:46:56 Big-Mac crashdump[640]: Exited process crashed
    Apr 10 21:46:56 Big-Mac crashdump[640]: crash report written to: /Library/Logs/CrashReporter/Exited process.crash.log

    ------------------------
    Here is the most recent entry in the above file, /Library/Logs/CrashReporter/Exited process.crash.log

    **********

    Host Name: Big-Mac
    Date/Time: 2008-04-10 21:46:56.154 -0400
    OS Version: 10.4.11 (Build 8S2167)
    Report Version: 4

    Command: Exited process
    Path: Exited process
    Parent: kernel_task [0]

    Version: ??? (???)

    PID: 548
    Thread: Unknown

    Exception: EXC_BAD_ACCESS (0x0001)
    Codes: KERN_PROTECTION_FAILURE (0x0002) at 0x00000034
    (null)
    Unknown thread crashed with X86 Thread State (32-bit):
    eax: 0xb0488b8f ebx: 0x004502de ecx: 0x01800038 edx: 0x00000000
    edi: 0xb0488b88 esi: 0xffffffff ebp: 0xb0488ba8 esp: 0xb0488b30
    ss: 0x0000001f efl: 0x00210282 eip: 0x00450684 cs: 0x00000017
    ds: 0x0000001f es: 0x0000001f fs: 0x00000000 gs: 0x00000037

    Binary Images Description:

    This is the end of this log file.
     
  2. macsrules macrumors regular

    Joined:
    Feb 26, 2008
    #2

    I had the same problem. I bought a Apple 20" Cinema Display off a guy on craigslist. Of course he assured me that there was nothing wrong with it. After the first day of using it, it started to do the same thing you are mentioning. It would just die. I would have to unplug the power brick and re-plug it back in to get it working again. I used PayPal and finally got them to replace it since I paid the guy with PayPal. Anyway, before replacing the power brick, I took it to the Apple Store and had the people at the Geniusbar help test it to make sure that the power brick was the problem. http://www.apple.com/retail/geniusbar/ set up an appointment before going.

    You stated that you already replaced the power supply and are still having problems though. There is one last resort you can try. You could try reinstalling the operating system to see if there is anything installed on the Mac that is causing the conflict. If you still have the problem it sounds like it might be a hardware problem with the monitor. If you need directions on how to re-install I have posted that in other threads.
     
  3. sajurcaju thread starter macrumors newbie

    Joined:
    Feb 6, 2007
    Location:
    Maine
    #3
    Recommended preventative maintenence for Radeon x1900

    Thanks much for your reply macsrules.

    I have fixed the problem. It is quite obvious (now).
    The Radeon video card has a slim blower on it, with a plastic box surrounding it . It pulls air across a heat sink with many thin fins, spaced maybe 1mm apart. When I finally looked at mine, it looked like the inlet had a felt filter over it. Vacuuming this lint cake off has completely eliminated the problem.

    My daughter not only was delighted with the lack of crashes, she also commented that the machine no longer sounded like an aircraft taking off. I suggest people with this card (and probably other video cards) check for trapped lint once and awhile.

    Steve
     

Share This Page