video issue with new install (3.0.1) on 604e/180 with 1705 monitor - Powerpc

This is a discussion on video issue with new install (3.0.1) on 604e/180 with 1705 monitor - Powerpc ; Hi there, I could definitely use a hand. I've just installed Yellow Dog 3.0.1 on my 604e/180 (104Mb, 4Mb VRAM) and the install went peachy (when I replaced the CDROM with a more recent one). But the moment it goes ...

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Thread: video issue with new install (3.0.1) on 604e/180 with 1705 monitor

  1. video issue with new install (3.0.1) on 604e/180 with 1705 monitor

    Hi there,

    I could definitely use a hand. I've just installed Yellow Dog 3.0.1
    on my 604e/180 (104Mb, 4Mb VRAM) and the install went peachy (when I
    replaced the CDROM with a more recent one).

    But the moment it goes into the X Window Server things go a bit south.
    I get half a display, predominantly in green/purple and yellow. Makes
    me a bit cross-eyed to use it.

    I really don't understand why the anaconda looked so great during the
    install and the video choice is so poor under X11. I chose "Generic OF
    video" (that's what it came with after a probe) - though it only selected
    2Mb video, 1024x768 res with thousands of colors, and the Apple Multiscan 1705
    monitor.

    So, to summarize, I can use the video it's set at currently - barely -
    but I'm trying to figure out what the right choice is.

    Any help would be much appreciated.

    thanks much,
    Stefan Fielding-Isaacs

  2. Re: video issue with new install (3.0.1) on 604e/180 with 1705 monitor

    stefan isaacs wrote:

    > I get half a display, predominantly in green/purple and yellow. Makes
    > me a bit cross-eyed to use it.


    Friendly advice (not criticism, just a tip): you need to also identify
    the exact video card make and model (mentioned in dmesg or Apple System
    Profiler), if you want to give people who don't have your hardware/setup
    (probably most people reading this) the info they need to help you.

    I don't have your exact hardware or video card, but (next best thing)
    I've run into the exact symptoms you describe using an Old World box
    from around this era that has an IMS TT video running on YDL 3's 2.4
    kernel . . . whenever I try to run it at a videomem/resolution higher
    than what the kernel recognizes (in my case, 3912k max out of 8192k
    total). Basically, the 2.4 kernel rewrite hosed some of the Old World
    video hardware detection routines at boot, so you have to set the MacOS
    side to the kernel's (implicit and undocumented) maximum usable videomem
    by trial and error - for me, that's 1152x870@millions (with an annoying
    6-pixel underscan for width) . . . or 1024x768@millions (no odd side
    effects). Once you have this, you need to check the no video drivers
    box in BootX, and then run the X setup program from console/command line
    as root when you log in on the linux side.

    BTW, you can run higher resolutions at thousands of colors, but you may
    have to change the 16 bit color in your XFree86 conf file to 15 by hand.
    At the end of all that fiddling, you'll have a single "fixed" but
    usable resolution - with accelaration even, if you have a driver for
    your card (if it's an IMS, you won't and you'll have to get/compile it).

    You can also do end runs around the issue by going back to a 2.2 kernel
    or the Xpmac driver, but IMO the hassle created outweighs the benefits.

    > I really don't understand why the anaconda looked so great during the
    > install and the video choice is so poor under X11. I chose "Generic OF
    > video" (that's what it came with after a probe) - though it only selected
    > 2Mb video, 1024x768 res with thousands of colors, and the Apple Multiscan 1705
    > monitor.


    YDL cheats and uses a different, earlier/smaller version of X during
    install, uses minimalist and likely-to-succeed 640x480x15 or 800x600x15
    resolutions during install, and doesn't attempt acceleration by default
    during install (at least on my card). It flies high by aiming low.

    Hope this helped,

    D.


  3. Re: video issue with new install (3.0.1) on 604e/180 with 1705 monitor

    stefan_isaacs@yahoo.com (stefan isaacs) wrote in message news:<56aa769d.0311081141.8df27e3@posting.google.com>...
    > Hi there,
    >
    > I could definitely use a hand. I've just installed Yellow Dog 3.0.1
    > on my 604e/180 (104Mb, 4Mb VRAM) and the install went peachy (when I
    > replaced the CDROM with a more recent one).
    >
    > But the moment it goes into the X Window Server things go a bit south.
    > I get half a display, predominantly in green/purple and yellow. Makes
    > me a bit cross-eyed to use it.
    >
    > I really don't understand why the anaconda looked so great during the
    > install and the video choice is so poor under X11. I chose "Generic OF
    > video" (that's what it came with after a probe) - though it only selected
    > 2Mb video, 1024x768 res with thousands of colors, and the Apple Multiscan 1705
    > monitor.
    >
    > So, to summarize, I can use the video it's set at currently - barely -
    > but I'm trying to figure out what the right choice is.
    >
    > Any help would be much appreciated.
    >
    > thanks much,
    > Stefan Fielding-Isaacs



    To partially answer my own question - I got the box running last night
    (after 5-6hrs of twiddling settings) with 832x624x32 using the fbdev
    driver.

    I do not have a video card, just the 4Mb VRAM DIMMs that it comes with -
    of which the kernel only seems to recognize 2Mb (when it autoprobes).
    Resolutions less than 32 give me this weird colormap problem - green and
    purple windows, almost illegible.

    So I'll continue to hunt for higher resolutions, but perhaps this will
    help some other soul.

    This PowerMac is based on the Catalyst design - also used in the PowerMac
    7200. However, the "platinumfb" didn't work worth a damn. I've been
    unable to determine the graphic chipset used on the mobo, either.

    thanks,
    Stefan

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