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Date: Wed, 28 Feb 2007 06:55:47 +0200
From: "Vlad Dogaru" <ddvlad@gmail.com>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] Switched monitors, having resolution problems
In-Reply-To: <20070227190505.75a13782@pascal.spore.ath.cx>
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References: <bf0e048a0702271536s24117dcem1f7b7a8bef0a0aa@mail.gmail.com>
<200702280048.09785.volker.armin.hemmann@tu-clausthal.de>
<bf0e048a0702271603r5e2e195ft8535d1de401c0847@mail.gmail.com>
<200702280154.29946.volker.armin.hemmann@tu-clausthal.de>
<20070227190505.75a13782@pascal.spore.ath.cx>
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On 2/28/07, Dan Farrell <dan@spore.ath.cx> wrote:
> On Wed, 28 Feb 2007 01:54:29 +0100
> "Hemmann, Volker Armin" <volker.armin.hemmann@tu-clausthal.de> wrote:
>
> > On Mittwoch, 28. Februar 2007, Vlad Dogaru wrote:
> > > On 2/28/07, Hemmann, Volker Armin
> > > <volker.armin.hemmann@tu-clausthal.de>
> > wrote:
> > > > 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, and have changed
> > > > > DefaultDepth and Modes lines in xorg.conf accordingly. The
> > > > > console works at 1024x768 as usual, but I have compiled that
> > > > > into the framebuffer. Any suggestions?
> > > >
> > > > how about not using modelines at all?
> > >
> > > I've tried commenting out the modeline, to no avail, and the
> > > DefaultDepth, also with no result. I've checked the logs and found
> > > nothing out of place. Attatched is my xorg.conf, should anyone find
> > > it meaningful.
> > >
> > > Vlad
> > >
> > > > --
> > > > gentoo-user@gentoo.org mailing list
> >
> > well, you set no mode at all - modelines are something different ;)
> >
> > Section "Screen"
> > Identifier "Screen0"
> > Device "Card0"
> > Monitor "Monitor0"
> > #DefaultDepth 24
> > SubSection "Display"
> > Viewport 0 0
> > Depth 1
> > EndSubSection
> > SubSection "Display"
> > Viewport 0 0
> > Depth 4
> > EndSubSection
> > SubSection "Display"
> > Viewport 0 0
> > Depth 8
> > EndSubSection
> > SubSection "Display"
> > Viewport 0 0
> > Depth 15
> > EndSubSection
> > SubSection "Display"
> > Viewport 0 0
> > Depth 16
> > EndSubSection
> > SubSection "Display"
> > Viewport 0 0
> > Depth 24
> > #Modes "1280x1024"
> > EndSubSection
> > EndSection
> >
> > change that too something like:
> >
> >
> > Section "Screen"
> > Identifier "Screen0"
> > Device "Card0"
> > Monitor "Monitor0"
> > #DefaultDepth 24
> > SubSection "Display"
> > Viewport 0 0
> > Depth 1
> > EndSubSection
> > SubSection "Display"
> > Viewport 0 0
> > Depth 4
> > Modes "1280x1024" "1024x768" "800x600" "640x480"
> > EndSubSection
> > SubSection "Display"
> > Viewport 0 0
> > Depth 8
> > Modes "1280x1024" "1024x768" "800x600" "640x480"
> > EndSubSection
> > SubSection "Display"
> > Viewport 0 0
> > Depth 15
> > Modes "1280x1024" "1024x768" "800x600" "640x480"
> > EndSubSection
> > SubSection "Display"
> > Viewport 0 0
> > Depth 16
> > Modes "1280x1024" "1024x768" "800x600" "640x480"
> > EndSubSection
> > SubSection "Display"
> > Viewport 0 0
> > Depth 24
> > Modes "1280x1024" "1024x768" "800x600"
> > "640x480" EndSubSection
> > EndSection
> >
> > And add this to your modules section:
> > Load "ddc"
> I find myself in this situation often, and usually, looking up
> Horizontal Sync and Vertical Refresh frequencies for the make and model
> of the monitor (rarely tricky) and then setting them in xorg.conf
> solves the problem. For example:
>
> Section "Monitor"
> Identifier "Monitor0"
> VendorName "Monitor Vendor"
> ModelName "Monitor Model"
> HorizSync 31.5-64.3
> VertRefresh 50-90
> Modeline "1024x768" 85.00 1024 1032 1152 1360 768 784 787 823
> EndSection
>
> In this case I also used a modeline because the HorizSync and
> VertRefresh settings didn't work at 1024x768 without it.
I emerged ddcxinfo-knoppix and when I run it with -monitor, I get a
lot of modelines, along with some HorizSync and VertRefresh values.
These are what concern me:
Section "Monitor"
Identifier "Monitor0"
# HorizSync 28.0 - 78.0 # Warning: This may fry very old Monitors
HorizSync 28.0 - 96.0 # Warning: This may fry old Monitors
VertRefresh 50.0 - 75.0 # Very conservative. May flicker.
# VertRefresh 50.0 - 62.0 # Extreme conservative. Will flicker.
TFT default.
# Default modes distilled from
# "VESA and Industry Standards and Guide for Computer
Display Monitor
# Timing", version 1.0, revision 0.8, adopted September 17, 1998.
# $XFree86: xc/programs/Xserver/hw/xfree86/etc/vesamodes,v
1.4 1999/11/18 16:52:17 tsi Exp $
# 640x350 @ 85Hz (VESA) hsync: 37.9kHz
ModeLine "640x350" 31.5 640 672 736 832 350 382
385 445 +hsync -vsync
<snip modelines here>
Does this program guarantee that the settings really do work for my
monitor or are they just generic? I need to know, especially
considering the remarks about frying. Also, just checking to see I got
it correctly: I would comment out all but one modeline and use that
one, right? Again, are all modelines listed supported? (This lists
1920x1440@75 for a 17" monitor -- not by far a wiz with this, but...
is this right??)
Vlad
--
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Do mail me if something is wrong with my behaviour. Thank you.
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