Subject: How to increase refresh rate under X11?
To: None <netbsd-users@NetBSD.org>
From: Julio M. Merino Vidal <jmmv84@gmail.com>
List: netbsd-users
Date: 05/15/2005 17:27:46
Hi all,

[please CC any replies to me as I'm not subscribed to the list]

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.

As I can see in the new XFree86.0.log, it's detecting all the supported
rates at 1024x768 correctly:

(**) 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 ...]

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.

Does anybody have a clue about what's happening and how can I fix it?

Thanks,

-- 
Julio M. Merino Vidal <jmmv84@gmail.com>
http://www.livejournal.com/users/jmmv/
The NetBSD Project - http://www.NetBSD.org/