Using an LCD projector and Monitor displays simultaneously
 

Hi,

I recently installed kubuntu edgy eft on a HP pavilion DV 6000 laptop which has an nVIDIA graphics card. When I tried to connect the laptop to an LCD projector, the display is available only on the laptop's monitor or the projector but not both. Also, when I switch the display from one device to another, the X server gets automatically restarted.

How do I configure it in such a way that the display is available both on the monitor and the projector at the same time? Also, the X server should not restart when I change the display device because I usually setup things as I want before connecting it to the projector.

I'd prefer the steps to use "nvidia-xconfig" because, I have problems with the xorg.conf that the "System Settings" module of kubuntu creates.

http://www.linuxquestions.org/questi...d.php?t=533514

Post # 8 of this thread shows my xorg.conf file.
Without knowing which nVidia card or driver you are using, I can't be very specific, but in my case, I have a GeForce4 MX440, which is a 'dual head' card.
I have it set up with this file, which allows me to have the second output of my card connected to a television, so I can watch movies on the TV, while using the computer on my monitor.
It is set up in this file as"Dual Screens using Xinerama", but with very few modifications, you can adjust this file, or at least copy the parts you need, to set up your laptop using the 'Clone' option, which if I am not mistaken, is what you want: you want the same thing on the monitor as is on the projector, correct?
Also, I recommend going to the nVidia website and if you haven't already, download the README file which corresponds to your driver or card, and specifically look into the options "Xinerama", "Twinview" and "Configuring TV-Out".
Hope this points you in the right direction :)

Hi chandru.in,

I'd solve this problem with the following command (as root)
then you will see your screen extent.

if you want make both screen using clone mode, edit xorg.conf
change
Option "TwinViewOrientation" "RightOf"
to
Option "TwinViewOrientation" "Clone"

Again, ctrl-alt-backspace!
Thats all and Good Luck!

Regards,
Ks

Dear Chandru

I am a lecturer at University and currently using Kubuntu 7.04. I added some configuration on my xorg.conf in order to get dual display on my notebook and LCD projector. Here some lines were added (please see BOLD CHARACTERS):

Section "Device"
identifier "Intel Corporation Mobile 945GM/GMS/940GML Express Integrated Graphics Controller"
boardname "Intel 945"
busid "PCI:0:2:0"
driver "i810"
screen 0
vendorname "Intel"
Option "MonitorLayout" "NONE,LFP+CRT"
Option "DevicePresence" "true"
Option "CheckLid" "false"
EndSection

Section "Monitor"
identifier "Generic Monitor"
vendorname "Generic"
modelname "1024x768 @ 60 Hz"
HorizSync 31.5-48.5
VertRefresh 50-70
modeline "640x480@60" 25.2 640 656 752 800 480 490 492 525 -vsync -hsync
modeline "800x600@56" 36.0 800 824 896 1024 600 601 603 625 +hsync +vsync
modeline "800x600@60" 40.0 800 840 968 1056 600 601 605 628 +hsync +vsync
modeline "1024x768@60" 65.0 1024 1048 1184 1344 768 771 777 806 -vsync -hsync
gamma 1.0
EndSection

Section "Screen"
Identifier "Default Screen"
Device "Intel Corporation Mobile 945GM/GMS/940GML Express Integrated Graphics Controller"
Monitor "Generic Monitor"
DefaultDepth 24
SubSection "Display"
depth 24
virtual 1024 768
modes "1024x768@60" "800x600@60" "800x600@56" "640x480@60"
EndSubSection
EndSection

For some new LCD Projectors it works well, but for older ones I got message "unsupported signal" or something like that. Or sometime it shows but flickering.
It seems that the projector doesn't catch-up the frequency.

regards
Surahyo

Thanks for all your replies. kstan's solution worked for me. The command I entered was: