Re: [gentoo-user] Switched monitors, having resolution problems

["Vlad Dogaru" <ddvlad@gmail.com>]

On 3/1/07, Dan Farrell <dan@spore.ath.cx> wrote:
> On Wed, 28 Feb 2007 08:58:56 -0000
> "Nelson, David \(ED, PAR&D\)" <David.Nelson2@astrazeneca.com> wrote:
>
> > > -----Original Message-----
> > > From: Vlad Dogaru [mailto:ddvlad@gmail.com]
> > > Sent: 28 February 2007 04:56
> > > To: gentoo-user@lists.gentoo.org
> > > Subject: Re: [gentoo-user] Switched monitors, having
> > > resolution problems
> > >
> > > > > > > On Mittwoch, 28. Februar 2007, Vlad Dogaru wrote:
> > > > > > > > Hello all,
> > > > > > > >
> > > > > > > > I have just switched monitors and X now starts in
> > > > > > > > 640x480. I intend to make it work at 1280x1024...
> > > > > > > > [snip] ...Any suggestions?
>
> > I find I have to set "IgnoreEDID" "True" in my xorg.conf card options
> > to get it to work. I am not entirely sure why - but it works. I think
> > it ignores what the monitor says its settings are and then uses
> > settings you specified, but I could be wrong.
> something like that.  I don't usually set it, but I think that's mostly
> because the only time I have to specify settings myself is when the
> EDID or whatever isn't working properly.  Monitors' support for this
> mode-gathering stuff seems to vary inversely with it's age.  Many of
> the older ones I have refuse to help X configure them at all.
> >
> > PS: Can we please try to trim the emails down a little? Quoting
> > several paragraphs of settings makes for a long email ;) Cheers
> ++.  It's so true.
I'll add this to the list of things I learned today. Apologies for the
inconvenience.
>
> >Does this program guarantee that the settings really do work for my
> >monitor or are they just generic?
> I am not familiar with ddcxinfo-knoppix, but it probably lists modelines
> from up to 3 different sources.  The graphics card can supply a list of
> available resolutions -- that's where 1920x1440@75 came from I bet.
> The monitor's refresh rates can also be used to extrapolate possible
> modelines -- I don't know how to do this, but aside from this program,
> there are websites that can do so for you.  Finally, the VESA standard
> defines what would likely be called generic settings that are supported
> by any VESA-compliant monitor and graphics card (just about all of them
> you can still physically connect to new computers, nowadays). These
> standard values are a good place to start, as your monitor should work
> for them, and you should be able to find one (1280x1024@70, maybe)
> that your monitor supports and that looks nice and doesn't flicker too
> much, and performs well on your hardware.  the Modes line is meant to
> be a list of modeline names, so you may or may not need the @70 part
> depending on where the modeline came from.  the X logs should list many
> modelines which X  came up with after probing the hardware, and you
> probably want to use a name from the desired one of these.
I am now using a VESA-compatible modeline for 1280x1024@75 (not sure
about the last one). I just pasted it from ddcxinfo-knoppix, knowing
the monitor would work with these settings.

One more question, though. If I switch back to my older, smaller
monitor and forget to change the modeline, will it get fried? I seem
to see this warning quite often.

Thanks for the help,
Vlad
>
> Have you tried looking up online and entering the refresh rates
> manually?  I highly recommend doing so.
>
> Best of luck,
>    dan.
>
> --
> gentoo-user@gentoo.org mailing list
>
>


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