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    apple powerbook g4 ATI Mobility graphics issue

    I have installed Kubunto on an Apple Macintosh Powerbook G4. With a little tweaking I have got Xorg running at the correct screen resolution, with the open source ATI driver.

    When I start X (kdm) there is a quality problem of the screen. Fonts have bits missing and images display with edges that have a noisy saturation effect. If I switch to a text prompt (Ctl-Alt-F1 and back again to Ctl-Alt-F7, the effect disappears.

    The effect is visible with the various sub drivers of the open source ati driver ('radeon', 'ati' are the only ones that work, so I left it back at the install default, of 'ati'.

    The binary blob driver for ATI is, I suspect, a binary blob for x86, at any rate, the installer failed.

    The man page for the driver has a confusing list of possible options, none which appear very relevent, too many to randomly try.... well I guess it may come to that...

    What could cause this problem?

    Happy Australia Day Weekend...
    Richard

    #2
    Re: apple powerbook g4 ATI Mobility graphics issue

    in adept or synaptic try searching for

    xorg-driver-fglrx

    its the Video driver for ATI graphics accelerators ...

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      #3
      Re: apple powerbook g4 ATI Mobility graphics issue

      Thanks for your suggestion.

      .*fglrx.* is not found (at least for the PPC architecture)

      I also came accross this at gentoo.org:

      [quote]ATI's closed source drivers are not supported on the PPC or Alpha, so you cannot use the 3D features of the R300 Graphics Processing Unit (GPU)/quote]

      Regards
      Richard

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