I think you can just copy one of the Modeline's from that log and put
it in your XF86Config to specify it.  So under the monitor or modes
section of your config file, put the line you like best.

http://www.xfree86.org/4.4.0/XF86Config.5.html

On 5/15/05, Julio M. Merino Vidal <jmmv84@gmail.com> wrote:
> Hi all,
>=20
> [please CC any replies to me as I'm not subscribed to the list]
>=20
> I've updated a rather old NetBSD 3.0_BETA installation to one built from
> today's sources.  During the process, XFree86 got updated from 4.4.0 to
> 4.5.0, and now I only get 1024x768@75Hz, while I got 1024x768@85Hz
> before the update.  I need to go back to 85Hz because 75Hz bother me a
> lot, really.
>=20
> As I can see in the new XFree86.0.log, it's detecting all the supported
> rates at 1024x768 correctly:
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> (**) RADEON(0): *Preferred EDID mode "1024x768": 78.8 MHz, 60.0 kHz,
> 75.0 Hz
> (II) RADEON(0): Modeline "1024x768"   78.75  1024 1040 1136 1312  768
> 769 772 800
> (**) RADEON(0):  Default mode "1024x768": 94.5 MHz, 68.7 kHz, 85.0 Hz
> (II) RADEON(0): Modeline "1024x768"   94.50  1024 1072 1168 1376  768
> 769 772 808 +hsync +vsync
> (**) RADEON(0):  Default mode "1024x768": 78.8 MHz, 60.1 kHz, 75.1 Hz
> (II) RADEON(0): Modeline "1024x768"   78.80  1024 1040 1136 1312  768
> 769 772 800 +hsync +vsync
> (**) RADEON(0):  Default mode "1024x768": 75.0 MHz, 56.5 kHz, 70.1 Hz
> (II) RADEON(0): Modeline "1024x768"   75.00  1024 1048 1184 1328  768
> 771 777 806 -hsync -vsync
> [... some more with lower rates ...]
>=20
> Notice the second mode line, the one with the highest rates.  As I can
> see in the previous log file, it used that mode.  But now, it's using
> the first one.  The old file does not say "Preferred EDID mode"
> anywhere, so I suspect this has something to do.
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> Does anybody have a clue about what's happening and how can I fix it?
>=20
> Thanks,
>=20
> --
> Julio M. Merino Vidal <jmmv84@gmail.com>
> http://www.livejournal.com/users/jmmv/
> The NetBSD Project - http://www.NetBSD.org/
>=20
>=20


--=20
_Matt