looked like hell, with moires and aliased vertical lines. My modeline
looked like this:
# 1280x1024 @ 61 Hz, 64.2 kHz hsync
Modeline "1280x1024"
110 1280 1328 1512 1712 1024 1025 1028 1054
Since the flat screen really
wants to have exactly the right pixel
frequency, as a shot in the dark
I added these lines right above that
one:
Modeline "1280x1024" 108 1280
1328 1512 1712 1024 1025 1028 1054
Modeline "1280x1024" 108.5 1280 1328
1512 1712 1024 1025 1028 1054
Modeline "1280x1024" 109 1280 1328 1512 1712
1024 1025 1028 1054
Modeline "1280x1024" 109.5 1280 1328 1512 1712 1024
1025 1028 1054
I changed only the pixel clock - it's close enough that
the other
parameters didn't need adjustment. And right now my display
says it's
How is ModeLine chosen?
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
I just got my fancy new 1280x1024 17" flatscreen set up, and it
looked like hell, with moires, aliased vertical lines, etc.. As seems to
be the case after running XF86Config originally, I had several 1280x1024
ModeLines in my XF86Config file. The closest modeline
looked like this:
# 1280x1024 @ 61 Hz, 64.2 kHz hsync
Modeline "1280x1024" 110 1280 1328 1512 1712 1024 1025 1028 1054
Since the flat screen really wants to have *exactly* the right pixel
frequency, as a shot in the dark I added these lines right above that
one:
Modeline "1280x1024" 108 1280 1328 1512 1712 1024 1025 1028 1054
Modeline "1280x1024" 108.5 1280 1328 1512 1712 1024 1025 1028 1054
Modeline "1280x1024" 109 1280 1328 1512 1712 1024 1025 1028 1054
Modeline "1280x1024" 109.5 1280 1328 1512 1712 1024 1025 1028 1054
I changed only the pixel clock - it's close enough that the other
parameters didn't need adjustment - and things look very good now..
right now my display says it's getting 63.9 kHz horzontal sync - almost
perfect. (The display wants 63.98 H and 60.02 V.)
My question is: In the presence of several 1280x1024 modelines, how is
the modeline chosen? Is XF86 even using the XF86Config file? The
XF86COnfig-4 files doesn't have any modelines in it. I don't see
anything in the log file except "(II) NVIDIA(0): Setting mode "1280x1024""
This is XFree86 4.2.0, the one that comes with RedHat 7.3, and the
NVidia-supplied driver to a Geforce2.
Thanks,
-W Sanders
www.wsanders.net
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