Dell D520 and strange X coordinates

[Michael George]

On Sun, Oct 14, 2012 at 02:59:27PM +0200, Thomas L?bking wrote:
> On Mittwoch, 10. Oktober 2012 22:17:47 CEST, Michael George wrote:
> > I have Fedora 17 installed on a Dell Latitude D520.  I can boot it into
> > runlevel 5 just fine as a laptop and I can run the default KDE window
> > manager.  I like to use CTWM, so I use the Custom option.  It all works
> > fine.
> >
> > When I put it into the docking station, I have two video outputs, one
> > VGA and one DVI.  If I boot into the default desktop, they both work as
> > expected.  However, if I start into the Custom desktop, my ctwm desktop
> > comes up fine, but it seems that there are 1024 pixels of width off to
> > the left of the left screen that isn't visible.
> 

Thomas, thank you for your response.  I have been busy at work and this
is a side-endeavor, so I haven't had a chance to look at the system
until today.

> What's the output of xrandr -q?
This is the output of "xrandr -q" with ctwm running:
-------------------------------------------------------------------------
Screen 0: minimum 320 x 200, current 3584 x 1024, maximum 4096 x 4096
LVDS1 connected (normal left inverted right x axis y axis)
   1024x768       60.0 +
   800x600        60.3     56.2  
   640x480        59.9  
VGA1 connected 1280x1024+1024+0 (normal left inverted right x axis y axis) 376mm x 301mm
   1280x1024      60.0*+   75.0  
   1280x960       60.0  
   1280x800       74.9     59.8  
   1152x864       75.0  
   1280x768       74.9     59.9  
   1024x768       75.1     70.1     60.0  
   1024x576       60.0  
   800x600        72.2     75.0     60.3     56.2  
   848x480        60.0  
   640x480        72.8     75.0     60.0  
   720x400        70.1  
DVI1 connected 1280x1024+2304+0 (normal left inverted right x axis y axis) 376mm x 301mm
   1280x1024      60.0*+   75.0  
   1280x960       60.0  
   1280x800       74.9     59.9  
   1152x864       75.0  
   1280x768       74.9     60.0  
   1024x768       75.1     70.1     60.0  
   1024x576       60.0  
   800x600        72.2     75.0     60.3     56.2  
   848x480        60.0  
   640x480        72.8     75.0     60.0  
   720x400        70.1  
TV1 unknown connection (normal left inverted right x axis y axis)
   848x480        59.9 +
   640x480        59.9 +
   1024x768       59.9  
   800x600        59.9  
-------------------------------------------------------------------------

I think it's the LVDS1 screen that is the problem.  The output looks
very similar with KDE running, but it must somehow ignore that first
screen.  I do not notice the TV1 output being a problem.

> CTWM seems err... "matured" (aka old) - it can pot. not cope with xrandr driven multiscreen setups.

CTWM just works with X11, so the config issue is in X11.  I am using
CTWM with no problems under gentoo and have been for years.

> Can you move the pointer out of the visible area and to you have a dead area on the right (ie. is the desktop just shifted to the left?)

No, to look at the screen it looks normal, but all the stuff that is
placed at coordinates in the first 1024 pixels to the left is not
visible.

Thank you again for your assistance!

-- 
-Michael

Rident stolidi verba Latina.
                        -Ovid