fglrx and extended desktop

[qwertz123]

Hello, I need help with some ubuntu configurations...

I am using buntu 9.04 64-bit and got an ati radeon HD3850 graphic card My primary monitor is a 22" Samsung with a native resolution of 1680x1050. Everything is working smoothly with the configuration posted beneath:


a@b:~$ fglrxinfo
display: :0.0 screen: 0
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: ATI Radeon HD 3850
OpenGL version string: 2.1.8575
a@b:/etc/X11$ cat xorg.conf
# xorg.conf (X.Org X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the xorg.conf manual page.
# (Type "man xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# Note that some configuration settings that could be done previously
# in this file, now are automatically configured by the server and settings
# here are ignored.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
# sudo dpkg-reconfigure -phigh xserver-xorg

Section "Monitor"
Identifier "Configured Monitor"
EndSection

Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
DefaultDepth 24
EndSection

Section "Module"
Load "glx"
EndSection

Section "Device"
Identifier "Configured Video Device"
Driver "fglrx"
EndSection
BUT the card has 2 DVI output and I want to connect a spare eizo TFT with a resolution of 1280x1024 and use it as extended desktop ont the right of my Samsung TFT. I have tried adopting my xorg.conf but failed miserably. When I plug in both monitors (using the current xorg.conf), I get twice the same desktop with a resolution of 1280x1024 and it is running really slow. How do I have to tweak the xorg.conf to use my monitors as extended desktop feature with the same well performance of a single TFT?

It would be really appreciated if you could help me. I suppose it isn't really much that need to get changed with my xorg.conf http://www.ubuntu-forum.de/wcf/images/smilies/biggrin.png

Thanks you very much!
qwertz123

PS: I have posted the same thread on the german ubuntu board. Just in case they can help me on that matter I will update this thread immediatly.
http://www.ubuntu-forum.de/artikel/45585/fglrx-und-erweiterter-desktop.html

[qwertz123]

Noone knows? :(

[qwertz123]

It is a pitty noone could help, but I found a solution working for me using xrandr:


a@b:~$ xrandr
Screen 0: minimum 320 x 200, current 2960 x 1050, maximum 2960 x 1050
DFP1 connected 1680x1050+0+0 (normal left inverted right x axis y axis) 474mm x 296mm
1680x1050 59.9*+
1400x1050 60.0
1280x1024 75.0 75.0 60.0 60.0
1440x900 59.9 59.9
1280x960 60.0 60.0
1152x864 75.0 75.0 60.0 60.0
1280x768 59.9
1280x720 60.0
1024x768 75.0 75.0 70.1 70.1 60.0 60.0
800x600 72.2 72.2 75.0 75.0 70.0 60.3 60.3 56.2 56.2
720x480 60.0
640x480 75.0 72.8 72.8 75.0 60.0
640x432 60.0
640x400 75.1 59.9
512x384 60.0 74.9
400x300 75.0 60.7
320x240 75.6 60.0
320x200 75.5 60.1
DFP2 connected 1280x1024+1680+0 (normal left inverted right x axis y axis) 338mm x 270mm
1280x1024 60.0*+
1280x960 60.0
1152x864 60.0
1280x768 59.9
1280x720 60.0
1024x768 60.0
800x600 60.3
720x480 60.0
640x480 60.0
640x432 60.0
640x400 59.9
512x384 60.0
400x300 60.7
320x240 60.0
320x200 60.1
CRT1 disconnected (normal left inverted right x axis y axis)
CRT2 disconnected (normal left inverted right x axis y axis)
TV disconnected (normal left inverted right x axis y axis)
COMPONENT_VIDEO disconnected (normal left inverted right x axis y axis)My new xorg.conf:


a@b:~$ cat /etc/X11/xorg.conf
# xorg.conf (X.Org X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the xorg.conf manual page.
# (Type "man xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# Note that some configuration settings that could be done previously
# in this file, now are automatically configured by the server and settings
# here are ignored.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
# sudo dpkg-reconfigure -phigh xserver-xorg

Section "Monitor"
Identifier "Configured Monitor"
EndSection

Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
DefaultDepth 24
SubSection "Display"
Virtual 2960 1050
EndSubSection
EndSection

Section "Module"
Load "glx"
EndSection

Section "Device"
Identifier "Configured Video Device"
Driver "fglrx"
EndSection
And the xrandr start script 45custom_xrandr-settings:


a@b:~$ cat /etc/X11/Xsession.d/45custom_xrandr-settings
xrandr --output DFP1 --auto
xrandr --output DFP2 --auto --right-of DFP1
]Finally, I can enjoy the extended desktop! :)