Re: [gentoo-user] how to bring down the sync range of your monitor?

[Iain Buchanan <iaindb@netspace.net.au>]

On Wed, 2007-01-17 at 22:46 +0800, Chuanwen Wu wrote:
> I find my monitor work correctly in the 85Hz(the character is
> vague).And in windows,I set the sync range to 75Hz and then it's OK.
> But how to bring down the sync range to 75Hz in gentoo?

the monitor frequency you see in windows is "VertRefresh" from
xorg.conf.  You don't have to specify a range, you can also give a
discrete value.

> Now in my xorg.conf:
> 
>  HorizSync   31.5 - 57.0
>  VertRefresh 50-90
> 
> Even I change them to 20 - 40(HorizSync)  and 30 - 60(VertRefresh),the
>  frequency is still 85Hz.

be careful just randomly changing these values - you can sometimes to
bad things to your monitor.

To stop this, X probes your monitor (if it supports EDID) to get the
refresh and sync values it can display, and it won't let you set the
value outside this.

I would troll through /var/log/Xorg.0.log and see if you can see
anything interesting about EDID or sync, etc.

HTH!
-- 
Iain Buchanan <iaindb at netspace dot net dot au>

We question most of the mantras around here periodically, in case
you hadn't noticed.  :-)
             -- Larry Wall in <199705101952.MAA00756@wall.org>

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