Re: Matrox G400 Dualhead

From: J Brook (jbk@postmark.net)
Date: Sat Mar 31 2001 - 12:46:38 EST

  • Next message: Douglas Gilbert: "Re: add-single-device won't work in 2.4.3"

    > I have a similar problem with my G450, booting into the framebuffer,
    > then loading xdm and working in X, and then switching back to the
    > console. I may have another detail to add in that when I switch back
    > to the console from X, my monitor blanks and displays the warning
    > that the frequencies are out of range.

     I think I have a work around. Boot up 2.4.3 with the framebuffer
    enabled as normal. Log in as root and use the fbset program to change
    the settings for all the framebuffers.
    eg.

    fbset -a 1024x768-70

    or whatever works for you. fbset has its own man page.

    This makes everything hunky-dory for me, in that after running fbset
    I
    can go in and out of X without ever losing the video signal.

     Petr, I had a look at the drivers/video/matrox subdir and there's no
    difference between 2.4.2 and 2.4.3, however there are differences in
    the drivers/video dir to do with framebuffers. The files that have
    been changed in drivers/video/ are:
      creatorfb.c
      fbmem.c
      fonts.c
      modedb.c
      sbus.c

     I know nothing about the nature of the changes that have been made
    though!

     It does seem to be a kernel problem rather than a X4.0.3 problem
    seeing as how 4.0.3 works fine under 2.4.2, and that using fbset on
    the framebuffer console in 2.4.3 solves the problem.

         John
    ----------------
    jbk@postmark.net
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