Date: Wed, 8 Oct 2008 12:05:54 +0100 From: "Jeremy Hooks" <jeremyhooks@googlemail.com> To: "Anton Shterenlikht" <mexas@bristol.ac.uk> Cc: freebsd-questions@freebsd.org Subject: Re: detecting monitor's sync and refresh rate? Message-ID: <bf2fbe6d0810080405g686783beuf301f45d3e6d8a75@mail.gmail.com> In-Reply-To: <20081008083923.GB88736@mech-cluster238.men.bris.ac.uk> References: <20081007115504.GA78610@mech-cluster238.men.bris.ac.uk> <44abdgf880.fsf@be-well.ilk.org> <20081008083923.GB88736@mech-cluster238.men.bris.ac.uk>
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I cheated a little and pulled this out of openSUSE 11's monitor database:
#==============================================
# 1024X768@60HZ
#----------------------------------------------
--> LCD:1024X768@60HZ {
Option=DPMS
Hsync=31-60
Modeline="1024x768" 65.0 1024 1048 1184 1344 768 771 777 806 -hsync -vsync
Vsync=30-60
}
That should be about right for your 15" LCD monitor if it supports
1024x768@60Hz - quite common for 15" monitors. You'll notice modeline
matches the last modeline in your logs. It might not be optimal, but it
should work if your monitor is VESA compliant.
Another option, if you have the Windows driver disk, would be to extract the
.inf file and get the settings from that.
2008/10/8 Anton Shterenlikht <mexas@bristol.ac.uk>
> On Tue, Oct 07, 2008 at 04:42:07PM -0400, Lowell Gilbert wrote:
> > Anton Shterenlikht <mexas@bristol.ac.uk> writes:
> >
> > > I've a monitor (Mobi M15MPC) with no docs.
> > > I've searched the net but cannot find any info on sync and refresh rate
> for it.
> > > I've done Xorg -configure, but testing with X -config xorg.conf.new
> > > shows screen shifted to the side and very nasty blinking, from which
> > > I deduced that perhaps I need to specify correct sync, refresh and
> mode.
> > >
> > > Are there any commands to get sync and refresh from the monitor?
> >
> > If X can't probe the monitor for its settings, I wouldn't trust any
> > other method of probing it either.
> >
> > Not to overlook the obvious: are the settings written on the back of
> > the monitor?
>
> no, nothing there.
>
> Can I make anything from this fragment of /var/log/Xorg.0.log:
>
> (II) intel(0): Printing DDC gathered Modelines:
> (II) intel(0): Modeline "1024x768"x0.0 65.00 1024 1048 1184 1184 768
> 771 777
> 806 -hsync -vsync (54.9 kHz)
> (II) intel(0): Modeline "800x600"x0.0 40.00 800 840 968 1056 600 601
> 605 628
> +hsync +vsync (37.9 kHz)
> (II) intel(0): Modeline "640x480"x0.0 25.20 640 656 752 800 480 490 492
> 525
> -hsync -vsync (31.5 kHz)
> (II) intel(0): Modeline "720x400"x0.0 28.32 720 738 846 900 400 412 414
> 449
> -hsync +vsync (31.5 kHz)
> (II) intel(0): Modeline "1024x768"x0.0 65.00 1024 1048 1184 1344 768
> 771 777
> 806 -hsync -vsync (48.4 kHz)
>
>
> > You can always try Google...
>
> so far no luck
>
> thanks
> anton
>
> --
> Anton Shterenlikht
> Room 2.6, Queen's Building
> Mech Eng Dept
> Bristol University
> University Walk, Bristol BS8 1TR, UK
> Tel: +44 (0)117 928 8233
> Fax: +44 (0)117 929 4423
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