weird graphics problem on 9600m

Discussion in 'MacBook Pro' started by jhu2, Dec 6, 2008.

  1. jhu2 macrumors member

    Joined:
    Nov 6, 2007
    #1
    So first some background information.

    I usually don't run the MBP on the 9600, but day I thought hey might as well, I paid for it. I used it once or twice before to test it out but never more than 4-5 hours. Today I decided to run it the whole day, and really put it though some intense work. Before whenever I payed WoW, after a few mins it would shut itself down, a well documented issue on these forums as well as the apple forums. But today, I decided to keep the fans up, and low and behold, it didn't shut down.

    I didn't notice any issues throughout the whole day, until I started up fusion at night to do a quick convert using a program. The blue windows background had pixelated vertical lines across the whole screen. So I thought it was a windows issue. After I logged out of fusion, I noticed a few pixelated lines where ever there was a great contrast between colors. I monitored the cpu temp and it was a steady 70 degrees Celsius.

    The vertical lines became much worse, and then the whites started to flash yellow. I decided to restart osx still in 9600 mode, and it didn't help. I went back to 9400 and it fixed it. After 10 mins, I switched back to 9600 and it was gone. But it came back after 10 mins of use.

    Any one know what's going on? I've had this MBP for a little under a month now, and I'm sure I won't be able to get it replaced.

    notice the lines vertical lines in the blue and purple: http://farm4.static.flickr.com/3242/3088795118_1dd016e0c0.jpg?v=0
    notice the lines in the clouds: http://farm4.static.flickr.com/3223/3088795282_b0e60eb5d3.jpg?v=0
    and no lines on 9400m: http://farm4.static.flickr.com/3179/3087957759_d4b4dab116.jpg?v=0
     
  2. cg165 macrumors regular

    Joined:
    Jun 24, 2008
    #2
    Seems like a problem with the 9600m card. Call apple or take it into an apple store if you're near one.
     
  3. ManWithhat macrumors regular

    Joined:
    Jun 24, 2008
    #3
    My 9600 has had none of those problems, and I game all night on WoW. Definitely take it in to apple or RMA it. You paid a good price for that laptop.
     
  4. jhu2 thread starter macrumors member

    Joined:
    Nov 6, 2007
    #4
    a little update

    This morning I woke up and the lines were gone, so I decided to run it for a bit, and again after five minutes, they started appearing. Thinking maybe heat was the issue, I cranked up the fans, using smcfancontrol, and the lines started to disappear! So now, I'm pretty sure its the heat caused by the GPU thats causing the issue.

    I want to take it into the apple store asap, but I can't until I'm done with exams. Even after I'm done with exams, I need my laptop for work. I'm afraid, since I'm over the exchange period, they will take it for like 2 weeks while I am laptopless. But I'm pretty sure thats what its come to. I don't understand how a 2500 dollar laptop can break down so fast. *sigh*
     
  5. six.four macrumors 6502

    Joined:
    Oct 24, 2008
    #5
    my stock 9600m gets hotter than my 8600gt did overclocked - which concerns me greatly.

    I ran some benchmarks for kicks - and logged the GPU temps. For the 9600, it gets up to 96 C. My overclock 8600m never reached over 87 - and it was heavily overclocked.

    I have a suspicion this is due to the fans not kicking in. My 8600m would kick to the full 5 or 6k rpm when it got over 85C. The 9600m remains absolutely silent throughout the entire benchmark... - my guess is it never even reach 4krpms.

    all my tests were done in windows xp sp3 with the stock boot camp 9600m gt drivers.
     

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