[Linux-fbdev-users] screen gets divided in 2

[Alberto A. <al...@ma...>]

I have an interesting problem.

I have a Gemini C1 graphics card, which is based on the
ET6000 chip but is adapted for fixed frequency monitors.

When I run a 2.4.17 kernel with fb enabled the screen gets
divided in half, changing the text to a rather short font so that
it shows the same contents on both halves of the screen.

I can log in and use the system normally, I can even
scrool after using cat on a long file. (both screen scroll
at the same time).

If I log in and switch to runlevel 5,  X windows fires up
normally and it doesn't have any of the splitting problems.

However switching back to a VT will exhibit the problems.

Any idea as to what I should be doing to fix the problem?
What files should I be looking at to figure out what is
going on?

I did download the fbset utility (is dated 1999) and looked
at the mode running:

[root@power linux]# /usr/sbin/fbset

mode "640x480-59"
    # D: 25.176 MHz, H: 31.469 kHz, V: 59.489 Hz
    geometry 640 480 640 480 4
    timings 39721 48 16 39 8 96 2
    rgba 6/0,6/0,6/0,0/0
endmode


Thanks,

Alberto