1 71 72 73 74 75 Previous Next 1,636 Replies Latest reply: Jul 9, 2014 11:08 PM by George2705 Go to original post Branched to a new discussion.
  • 1,080. Re: 24" iMac Screen Freezes since 10.6.3 update - pls help!
    Jsh1971 Level 1 Level 1 (0 points)

    Apple Store couldn't recreate my problem and tried pointing at Vmware which was installed on my system.  I explained that Vmware was definitely not the issue - the lock ups existed before I installed Vmware.

     

    They replaced the GPU and logic board...  took it home yesterday and lockups continued.

     

    Definitely software related unless they didn't really do the replacement...  I'm blown away here.

     

    Time machine was running during last lock up.  My instinct was to disable time machine and see if lock ups continue... but I think I've done that before.  I feel like I'm running around in circles here.

  • 1,081. Re: 24" iMac Screen Freezes since 10.6.3 update - pls help!
    aieronimo Level 1 Level 1 (0 points)

    Thanks are due to Krzysiu Turek, who deserves the Nobel Peace Prize for posting his kext-based solution.

  • 1,082. Re: 24" iMac Screen Freezes since 10.6.3 update - pls help!
    j-peter Level 1 Level 1 (0 points)

    First of all I thought VMware Fusion was the issue of the crashes of my iMac. Thus, I reinstalled my iMac without VMware and with Parallels. But the same crashes had happened. Next, I reinstalled my iMac without both of them. Anyway I've had the crashes. Only kext helped.

     

    I've got the Apple Protection but in my opinion it's not the correct solution to use an other GPU as I've had originally bought. In my opinion it's an software bug and not a hardware failure and I demand a software solution of Apple...

  • 1,083. Re: 24" iMac Screen Freezes since 10.6.3 update - pls help!
    Harkaitz Level 1 Level 1 (0 points)

    Has anyone tested the fix with lion 10.7.4??? Any kernel panics?

  • 1,084. Re: 24" iMac Screen Freezes since 10.6.3 update - pls help!
    goskip40 Level 1 Level 1 (0 points)

    Yes - it is a software bug alright, my machine (fingers crossed) has been stable since I upgraded to 10.6.8. (64 bit) with the Kext fix.

     

    I am so pleased I did not waste £134 of my money on a new GPU which at the time I thought would fix the problem but it appears that it is not certain to.

     

    Again I applaud Krzysiu Turek for the clever Kext fix which is a get out of jail fix if ever I saw one! Did not know there was a 10.7.4 release out now (then again I am not on Lion) so yes - it will be interesting to see if the Kext fix works on that.

     

    Goodness knows what we do when eventually (surely) the 10.6.2 drivers fail to work with new release of Lion or Mountain Lion.

  • 1,085. Re: 24" iMac Screen Freezes since 10.6.3 update - pls help!
    David Portela Level 1 Level 1 (25 points)

    Are any of you seeing artifacts/pixellation like the ones described in this thread?

     

    https://discussions.apple.com/thread/3938355?start=0&tstart=0

  • 1,086. Re: 24" iMac Screen Freezes since 10.6.3 update - pls help!
    swmaster Level 1 Level 1 (0 points)

    Hi. upgraded to 10.7.4 yesterday. this is an imac7,1 with ati2400.

    right now i am running the upgraded kexts, and for the first time i was able

    to lauch a 3d-accelerated game on this imac (heroes V).

     

    i tried it many times, it hung always on the same spot, always the same way, with the good old GPU debug in system.log. even if used with the 10.6.2 kexts.

     

    now it's ok. dunno, maybe a coincidence, but until now had no freezes. i'll keep you posted.

  • 1,087. Re: 24" iMac Screen Freezes since 10.6.3 update - pls help!
    David Portela Level 1 Level 1 (25 points)

    Those of you running Lion and NVIDIA GT 120 or GT 130 GPUs, and having crashes and pixellation issues, try running Lion in 32-bit mode (start up holding 3 and 2) and see if they continue. I just did this tonight and have been colored-pixel-free for about 5 hours now, no crashes, mosaics, or any other graphics anomalies.

     

    If it works, come back to report so others can learn about it!

  • 1,088. Re: 24" iMac Screen Freezes since 10.6.3 update - pls help!
    Eclipsethegalaxy Level 1 Level 1 (5 points)

    I have the NVIDIA GT130 and suffered all of the same problems. I also tried running in 32 bit mode but the symtoms continued. I finally replaced the GPU with a revised GT 130

    card under Apple care. I have now been running absolutely trouble free for 2 months. The technician told me my card was overheating due to Lion maxing out the resources of the card. Fan Control for Mac ( free download ) helped to cool it down, but not enough. Kext fixes were not available for this card. ( No driver download support.)

  • 1,089. Re: 24" iMac Screen Freezes since 10.6.3 update - pls help!
    cadplan Level 1 Level 1 (25 points)

    Yes logic would suggest a graphics card problem causing screen image faults. Imacs just don't have the cooling space inside for the cards that Powermacs have, and if they are sitting on a desktop with free air all around them that's about as much as you can do apart from possibly taking the back off the clean away any accumulated dust. I've got an ageing 24' 2006 with intermittent screen image freezing problems caused by the card heating up and I'm trying to keep it cool until the new iMacs come out hopefully next month. I just hope they don't run hooter than the card can cope with!

  • 1,090. Re: 24" iMac Screen Freezes since 10.6.3 update - pls help!
    swmaster Level 1 Level 1 (0 points)

    no luck. although heroesV runs w/o problems, watching a youtube video brings the gpu to it's knees.

    i'm about to try the 10.6.2 drivers.

     

    btw. it's an alu imac7,1 with ATI HD2400

  • 1,091. Re: 24" iMac Screen Freezes since 10.6.3 update - pls help!
    Harkaitz Level 1 Level 1 (0 points)

    Kext fix works on my 8.1 imac (radeon 2600pro) with Lion 10.7.4.

  • 1,092. Re: 24" iMac Screen Freezes since 10.6.3 update - pls help!
    eojwahs Level 1 Level 1 (0 points)

    I also have an 8,1 imac with a Radeon HD 2600 pro, but the kext solution hasn't solved the hangs for me on 10.7.4.  Like others, I can pretty easily trigger them when downloading multiple things via iTunes.

     

    If it does work for you, it would be helpful to me (and hopefully others) if you could post some additional info from the System Information utility (System Profiler in 10.6).

     

    Go to Software -> Extensions and scroll down to the ATI extensions.  After moving the 10.6.2 kexts into place, I have:

     

    ATI2600Controller:

     

      Version:          1.6.6

      Last Modified:          8/3/09 2:06 AM

      Get Info String:          ATI2600Controller 1.6.6.25 (7429)

      Kind:          Intel

      Architectures:          i386, x86_64

      64-Bit (Intel):          Yes

      Location:          /System/Library/Extensions/ATI2600Controller.kext

      Kext Version:          6.0.6

      Load Address:          0xffffff7f81711000

      Valid:          Yes

      Authentic:          Yes

      Dependencies:          Satisfied

     

    ATIFramebuffer:

     

      Version:          1.6.6

      Last Modified:          8/3/09 2:04 AM

      Get Info String:          ATIFramebuffer 1.6.6.25 (7429)

      Kind:          Intel

      Architectures:          i386, x86_64

      64-Bit (Intel):          Yes

      Location:          /System/Library/Extensions/ATIFramebuffer.kext

      Kext Version:          6.0.6

      Load Address:          0xffffff7f816fa000

      Valid:          Yes

      Authentic:          Yes

      Dependencies:          Satisfied

     

    ATIRadeonX2000:

     

      Version:          7.18.18

      Last Modified:          6/24/11 2:14 AM

      Get Info String:          ATIRadeonX2000 7.18.18 11019

      Kind:          Intel

      Architectures:          i386, x86_64

      64-Bit (Intel):          Yes

      Location:          /System/Library/Extensions/ATIRadeonX2000.kext

      Kext Version:          7.1.8

      Load Address:          0xffffff7f8140c000

      Valid:          Yes

      Authentic:          Yes

      Dependencies:          Satisfied

     

    ATISupport:

     

      Version:          1.6.6

      Last Modified:          8/3/09 2:05 AM

      Get Info String:          ATISupport 1.6.6.25 (7429)

      Kind:          Intel

      Architectures:          i386, x86_64

      64-Bit (Intel):          Yes

      Location:          /System/Library/Extensions/ATISupport.kext

      Kext Version:          6.0.6

      Load Address:          0xffffff7f813c7000

      Valid:          Yes

      Authentic:          Yes

      Dependencies:          Satisfied

     

    Note that ATIRadeonX2000 is the Lion version, and the other three are the 10.6.2 versions.  Maybe that's the problem?  If I copy over the X2000 kext as well, the machine won't boot.  What do things look like for others?

     

    BTW, my Hardware -> Graphics/Displays section is:

     

    ATI Radeon HD 2600 Pro:

     

      Chipset Model:          ATI Radeon HD 2600 Pro

      Type:          GPU

      Bus:          PCIe

      PCIe Lane Width:          x16

      VRAM (Total):          256 MB

      Vendor:          ATI (0x1002)

      Device ID:          0x9583

      Revision ID:          0x0000

      ROM Revision:          113-B2250L-259

      EFI Driver Version:          01.00.259

      Displays:

    iMac:

      Resolution:          1680 x 1050

      Pixel Depth:          32-Bit Color (ARGB8888)

      Main Display:          Yes

      Mirror:          Off

      Online:          Yes

      Built-In:          Yes

     

    Thanks,

    Joe

  • 1,093. Re: 24" iMac Screen Freezes since 10.6.3 update - pls help!
    swmaster Level 1 Level 1 (0 points)

    alu imac 7,1 here with hd2400xt, running 10.7.4 now with the 10.6.2 ati kexts.

     

    imac:~ bat$ kextstat | grep ATI

       85    2 0xffffff7f80e5d000 0x45000    0x45000    com.apple.kext.ATISupport (6.0.6) <77 9 8 7 5 4 3 1>

       86    0 0xffffff7f80ea2000 0xca000    0xca000    com.apple.kext.ATI2400Controller (6.0.6) <85 77 9 8 5 4 3 1>

       94    0 0xffffff7f810cf000 0x261000   0x261000   com.apple.ATIRadeonX2000 (7.1.8) <78 77 9 7 6 5 4 3 1>

       99    0 0xffffff7f81360000 0x12000    0x12000    com.apple.kext.ATIFramebuffer (6.0.6) <85 77 9 8 7 5 4 3 1>

     

    everything is ok now, youtube / any other flv videos work. so does 3d intensive gaming.

  • 1,094. Re: 24" iMac Screen Freezes since 10.6.3 update - pls help!
    KrzysiuTurek Level 1 Level 1 (0 points)

    After Apple release 10.7.3 and 10.7.4 update I notice that I must do kext fix TWICE. After first fix system works ok but only several days. Can anyone confirm it?

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