915resolution

O. Sinclair o.sinclair at gmail.com
Tue Sep 19 08:26:07 BST 2006


Dear Derek, I have always found top-posting easier to read and deal with but
will follow your wish. The rest of my reply is then at the end of this mail

On 18/09/06, Derek Broughton <news at pointerstop.ca> wrote:
>
> O. Sinclair wrote:
>
> Please don't top-post.  It makes having a discussion difficult.
>
> > OK here goes, a rather long output from xorg.conf - this is after I
> > fiddled with hardware settings in "Display" section... but still no luck
> > on 1400 * 1050
>
> > Section "Monitor"
> >   identifier "Generic Monitor"
> >   vendorname "Dell"
> >   modelname "Dell 1400x1050 Laptop Display Panel"
> >   HorizSync 31.5-90.0
> >   VertRefresh 59.0-75.0
> >   modeline  "640x480 at 60" 25.2 640 656 752 800 480 490 492 525 -vsync
> >   -hsync
> >   modeline  "640x480 at 72" 31.5 640 664 704 832 480 489 491 520 -vsync
> >   -hsync
>
> OK, first, where did all these come from?  You don't have vsyncs of 72 &
> 75
> on an LCD monitor.  You only need the 60Hz values.
>
> >   modeline  "1280x1024 at 75" 135.0 1280 1296 1440 1688 1024 1025 1028
> > 1066 +hsync +vsync
> >   modeline  "1280x960 at 60" 102.1 1280 1360 1496 1712 960 961 964 994
> > -hsync +vsync
>
> Do you have a widescreen model?  Dell widescreens are 16:10 ratio, normal
> screens are 4:3.  1280x960 isn't either, so again probably not necessary.
>
> ...
>
> > Section "Screen"
> >   Identifier "Default Screen"
> >   Device "Intel Corporation 82852/855GM Integrated Graphics Device"
> >   Monitor "Generic Monitor"
> >   DefaultDepth 24
> >   DefaultDepth 16
>
> These can't both be right - but I'm not sure which takes precedence.  I'd
> be
> prepared to bet that it's the "16" value, because then you don't have any
> modes specified!
>
> >   SubSection "Display"
> >     depth 24
> >     virtual 1920 1440
>
> Do you know what that does?  If not, you'll probably want to get rid of
> it.
>
> >     modes "1280x1024 at 75" "1280x960 at 60" "1152x864 at 75" "1280x1024 at 60"
> > "1024x768 at 60" "1280x960 at 75" "1024x768 at 70" "1400x1050 at 60" "1024x768 at 75"
> > "1400x1050 at 75" "832x624 at 75" "1600x1200 at 65" "800x600 at 60" "1600x1200 at 60"
> > "800x600 at 75" "1600x1200 at 70" "800x600 at 72" "1792x1344 at 60" "640x480 at 75"
> > "1856x1392 at 60" "640x480 at 72" "1920x1440 at 60" "640x480 at 60"
> >   EndSubSection
> > EndSection
>
> It's much simpler to get rid of most of that.  My xorg.conf, which _does_
> support widescreen, simply has:
>
> Section "Monitor"
>         Identifier      "Laptop Monitor"
>         Option          "DPMS"
>         # 1280x800 @ 60.00 Hz (GTF) hsync: 49.68 kHz; pclk: 83.46 MHz
>         Modeline "1280x800_60"  83.46  1280 1344 1480 1680  800 801 804
> 828  -HSync +Vsync
>         HorizSync       45.0 - 51.0
>         ModelName       "LCD Panel 1280x800"
> EndSection
>
> Section "Screen"
>         Identifier      "Default Screen"
>         Device          "Intel Video Card"
>         Monitor         "Laptop Monitor"
>         DefaultDepth    24
>         SubSection "Display"
>                 Depth           24
>                 Modes           "1280x800_60" "1024x768"
>         EndSubSection
> EndSection
>
> You shouldn't need any modelines for standard resolutions - pretty well
> anything at 4:3 ratio - I doubt you even need a Modeline in the screen
> section for 1280x1024.  The default resolutions are simply specified
> as "1280x1024" instead of "1280x1024 at 60" or "1280x1024_60".
> >
> >
> > On 18/09/06, Derek Broughton <news at pointerstop.ca> wrote:
> >>
> >> What does:
> >>
> >> # gtf 1400 1050 60
> >>
> >> say?  If it shows you anything, you shouldn't need 915resolution.
>
> Things _would_ go easier if you just answer the questions we ask...
> --
> Well,
>
I don't really UNDERSTAND this xorg.conf thing, OK. So am very happy for
support but please don't expect me to try and explain HOW the stuff got
there. I simply changed the monitor setting to Dell Laptop 1400 * 1050 in
"Display" settings Hardware settings and that is what came it out of it.
the "gtf 1400 1050 60" gives this output;
"1400x1050 @ 60.00 Hz (GTF) hsync: 65.22 kHz; pclk: 122.61 MHz
  Modeline "1400x1050_60.00"  122.61  1400 1488 1640 1880  1050 1051 1054
1087  -HSync +Vsync"

Sinclair
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