[ltp] Last desperate attempt to show off my Debian Thinkpad at aconference

Alex Deucher linux-thinkpad@linux-thinkpad.org
Sat, 26 Feb 2005 16:13:07 -0500


On Sat, 26 Feb 2005 15:27:31 -0500, Brad Langhorst <brad@langhorst.com> wrote:
> On Fri, 2005-02-25 at 15:13 -0500, Alex Deucher wrote:
> 
> > > Okay. So I assume that means the second head needs to be connected when
> > > X starts, for it to be recognized? Is it possible to restart X to detect
> > > the new screen, without killing all the running applications on the
> > > existing screen?
> >
> > since X is not dynamically re-configurable, you can only have one
> > configuration per instance.  if you want to change it, you have to
> > restart X.  restarting X will disconnect all your X clients.
> 
> I have this trouble as well...
> I'd like to be able to
> 1) enable display :0.1 on the fly or
> 2) force display:0.1 to be enabled even though it's not detected during
> X startup
>  I get this if I don't have an external display plugged in"
> (WW) RADEON(1): Only one monitor detected, Second screen will NOT be
> created

just force mergedfb on and enter your crt2 hsync and vrefresh and your
metamodes.  that will force the other port on even if it's nto
detected.

> 
> I'm including the script I use for doing presentations...
> I call it like this: 'presentation.sh blah.sxi 640x480'
> 
> I do have one remaining problem with this setup:
> -my keyboard focus always stays in in the vncclient if I run it in
> fullscreen mode... I can work around this by starting a window manager
> in the vncserver or starting up a mouseable task manager so I can kill
> the fullscreen client when I'm done.
> 
> John: do you have this one solved?
> 
> - one caveat... if you use the openoffice quickstarter or have
> openoffice programs already running on the main display, the
> presentation will display on the main display. It's not possible (afaik)
> to start up a fresh copy of openoffice on :3.
> 
> cat ~/bin/presentation.sh
> #!/bin/sh
> res="$2"
> #set resolution to 1024x768 by default
> if [ -z "$res" ] ; then res="1024x768" ; fi
> echo "switching to $res"
> 
> xrandr -d :0.1 -s $res
> 
> #create a new instance of X for vnc
> vnc4server :3 -name 'presentation' -localhost -geometry $res
> 
> #put window of the presentation on the main display
> xvnc4viewer -Shared -UseLocalCursor :3 -passwd ~/.vnc/passwd &
> 
> #put a full screen version on the external display
> #xvnc4viewer -display :0.1 -Shared -UseLocalCursor :3 -passwd
> ~/.vnc/passwd &
> xvnc4viewer -display :0.1 -Shared -FullScreen -UseLocalCursor :3 -passwd
> ~/.vnc/passwd &
> 
> pres="$1"
> if [ -z "$pres" ] ; then
>     echo "not starting any presentation"
> else
>     echo "starting presentation: $1"
>     ooimpress -display :3 -show $1
> fi
> 
> #make sure that the screensaver doesn't kick in during the presentation
> while [ `pidof soffice.bin | wc -L` -gt 0 ]
> do xscreensaver-control -deactivate
> sleep 30
> done
> 
> --
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