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    SubjectRe: Cant' switch to VESA VGA (I wanna see the grafik logo!)

    On Sun, 19 Jul 1998, Martin Mares wrote:

    > > i'm running Kernel 2.1.109 + 109ac2 + devfs on my test box here. The
    > > framebuffer device is a S3 Virge. I tried allready a few modes (600x640
    > > and 800x600 with 8, 15 and 16 bit colordepth). I calculated the numbers
    > > for "vga=" as follows:
    > >
    > > hex2dec( <number from linux/Documentation/fb/vesafb.txt> + 0x200 );
    > >
    > > So the decimal numbers are e.g. 788 (0x314) for 800x600 with 16 bit colors
    > > or 769 (0x301) for 640x480 with 8 bit colors. I get all the time a
    > > message like "you passed an undefined mode." - but the debuging message
    > > of "vga=ask" tells me the it dedected my card as a VESA VGA Card (what is
    > > right).
    > Are you sure your VGA BIOS supports VESA modes?

    Well, I have 2 VESA Text modes in the list if tell the kernel "vga=ask"
    and the kernel tells me that i have a vesa card in the headline of
    "vga=ask" (but i don't know if this means that it is a VESA 2.0 card
    which supports a linear frame buffer). The code after the "check_vesa"
    mark in linux/arch/i386/boot/video.S just returns if the mode is ok or
    not - what's about a more verbose message? ("badmdt" does not tell
    anything except that it does not work. :-)

    But I guess that the S3 Virge card is VESA 2 compatible (it's not a very
    old card). I can't find any manuals - so I'm not absolute sure about this.
    How can I find out if I can use my card or not?

    - clifford

    PS: Why is all this stuff written in pure assembler?
    It's so hard to read. :-)

    -- -- -- -- -- -- -- -- -- -- -- -- --
    Clifford Wolf
    magnet - Internet at Work IRC: efnet / clifford
    Director of System Development
    e-mail: email:

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