Re: [gentoo-user] Re: How to set monitor refresh rate in xorg

[Mrugesh Karnik]

Robert S wrote:
I've looked at that - the "Monitor" section in my xorg.conf looks like this:
Section "Monitor"
        Identifier   "Dell"
        HorizSync    31.0 - 54.0
        VertRefresh  50.0 - 120.0
EndSection
In other words, it allows a VertRefresh rate of up to 120.  I looked
at the Dell specs.  It still does not do 87 by default.
On 4/24/05, Matan Peled <[EMAIL PROTECTED]> wrote:
Robert S wrote:
I've just installed a new Dell monitor.  I've set the vert/horiz
refresh rates using the manufacturers' specs (congrats to Dell for
making these easily available).
When I get into X I get a refresh rate of 60Hz by default, but I'm
able to increase this to 87 using the KDE control center.
How do I enable the refresh rate of 87 in /etc/X11/xorg.conf?  There
doesn't seem to be a refresh rate option there.  Presumably I'd only
get the rate of 87Hz for users who have it set up in their KDE
settings and it wouldn't be available with other window managers.
RTFM.
Namely, man xorg.conf,
this part ( Monitor section ) in particular:
      VertRefresh  vertrefresh-range
             gives  the range(s) of vertical refresh frequencies supported
by
             the monitor.  vertrefresh-range may be a comma separated list
of
             either  discrete  values or ranges of values.  A range of
values
             is two values separated by a dash.  By default the values are
in
             units  of Hz.  They may be specified in MHz or kHz if MHz or
kHz
             is added to the end of the line.  The data given here is used
by
             the Xorg server to determine if video modes are within the
spec-
             ifications of the monitor.  This information should be
available
             in  the monitor's handbook.  If this entry is omitted, a
default
             range of 43-72Hz is used.
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[Name      ]   ::  [Matan I. Peled    ]
[Location  ]   ::  [Israel            ]
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IIRC, xorg guesses the correct refresh rate automatically according to 
the frequencies you input. Having said that, I wonder if it varies with 
the resolution? (Not an expert with monitors!) I've been able to use 
1024 with 75 Hz refresh rate, but at 1280, it drops to 60 
automatically... Just curious, most probably I'm wrong...
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