On Tue, Oct 23, 2007 at 09:34:10PM -0000, fremm wrote:
> Yes, I try both the "auto adjust" function (excellent for an instant and
> global settings) and I also try to adjust the "focus" function. But at
> the maximum, the black left part is still 6 cm wide and the right one 1
> cm. Anyway, there is no problem with these settings with Feisty for
> instance.

Okay, thanks for ruling that out.  So it's definitely a modeline issue.

Btw, note that 1680x1050 is 16:10 not 16:9.  (Not sure if this is
important to the issue, but worth noting.)

For the modeline, there's a few things to try.  First, try specifying
your actual Horiz and Vert freq ranges:

 Section "Monitor"
        Identifier      "PW201"
        Option          "DPMS"
        HorizFreq       31.47 - 80.0
        VertRefresh     56.0  - 75.0
 EndSection

This might be enough of a clue to Xorg to get the modeline right, but
I'm guessing not.

Next, try specifying a new modeline.  You can generate your own modeline
using online tools.  Here is one that looks like it may better fit your
monitor's parameters:

 Modeline "[EMAIL PROTECTED]" 146.25  1680 1712 2264 2296  1050 1071 1081 1103
 # Horizontal sync frequency: 63.69 kHz

And change the SubSection in your Screen section to this:

    SubSection "Display"
               Depth    24
               Modes    "[EMAIL PROTECTED]"
    EndSubSection

Let me know how that looks.

Bryce

-- 
contracted screen with 1680x1050 resolution
https://bugs.launchpad.net/bugs/148208
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