Powerbook G4 17" vertical red lines
  • Cocoon
    Cocoon
    walkero
    Posts: 41 from 2006/3/1
    Hello all. I got a Powerbook G4 17" where I installed MOS 3.9, which I already registered.
    This computer has a Radeon9700M with 64MB of RAM, and I use it at a resolution of 1440x900. Unfortunately, there are some kind of red lines visible, depending the background color. For example, when I use the Mettalix wallpaper, there is a wierd circle of red and green colors.
    you can see the problem at the following photo.

    mos_colors.jpg

    This problem is not visible when I boot to MacOS.

    Do you believe that I must change something at my configuration? Is it a known problem of MOS? Is there a solution?

    Thank you all for your help.
  • »04.06.17 - 18:01
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  • Priest of the Order of the Butterfly
    Priest of the Order of the Butterfly
    koszer
    Posts: 627 from 2004/2/8
    From: Poland
    I'd try your Powerbook with an external display, to make sure it's not the panel issue.
  • »04.06.17 - 19:21
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  • Order of the Butterfly
    Order of the Butterfly
    Amigaharry2
    Posts: 495 from 2010/1/6
    From: EU-Austria (Wien)
    Try an older Radeon-driver (eg. from MOS 3.7).
    1xPeg2, PowerMac G5, PowerbookG4, 2x MacMiniG4, Efika (again), A3000T, A3000D and life is never boring.....
  • »04.06.17 - 19:36
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  • Cocoon
    Cocoon
    walkero
    Posts: 41 from 2006/3/1
    Thank you all for your replies. I install Chrysalis package and until now it seems it is resolved, as I don't see it anymore.
    I can't say where the problem was, but I wonder about the screen setup. I just saw that on this system the resolution is 1440x900 24bit, and I can't increase the color bit to 32bits. Is it logical?

    If this issue appear again, I will inform you guys.
  • »04.06.17 - 20:24
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  • Cocoon
    Cocoon
    walkero
    Posts: 41 from 2006/3/1
    double post... sorry

    [ Edited by walkero 04.06.2017 - 23:21 ]
  • »04.06.17 - 21:21
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  • Order of the Butterfly
    Order of the Butterfly
    Amigaharry2
    Posts: 495 from 2010/1/6
    From: EU-Austria (Wien)
    24 bit is the normal max resolution (>16 mill colors) for MOS.
    32 bit (24+8) is additional alpha channel (afaik) ...

    btw: 64MB VRAM isn't very much - I think you would run out of VRAM useing higher resolutions/depths, when useing more screens at a time...

    [ Editiert durch Amigaharry2 04.06.2017 - 22:55 ]
    1xPeg2, PowerMac G5, PowerbookG4, 2x MacMiniG4, Efika (again), A3000T, A3000D and life is never boring.....
  • »04.06.17 - 21:52
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  • Cocoon
    Cocoon
    walkero
    Posts: 41 from 2006/3/1
    Hello again. Today I started the machine and seemed to work just fine. I run the GfxSpeed performance checker and since then the problem came back. It happens now even if I restart the computer.

    Any clue?
  • »05.06.17 - 11:36
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  • MorphOS Developer
    jacadcaps
    Posts: 1488 from 2003/3/5
    From: Canada
    Sounds like an issue with the soldering of the graphics chip or micro cracks on the mobo - had the same problem with my old 17'' PB. Ended up replacing the mother board since attempts to fix this with a heat gun did not help.
  • »05.06.17 - 12:35
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  • Cocoon
    Cocoon
    walkero
    Posts: 41 from 2006/3/1
    Quote:

    jacadcaps wrote:
    Sounds like an issue with the soldering of the graphics chip or micro cracks on the mobo - had the same problem with my old 17'' PB. Ended up replacing the mother board since attempts to fix this with a heat gun did not help.


    If it was this issue, would it do the same under MacOS X, or even do it all the time under morphos? What I saw also is that if I reduce the colour bits, the wrong color lines move to an other position and are mostly green.
  • »06.06.17 - 21:56
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