Primary monitor is a 22" Dell widescreen, with a Gateway FPD1520 to the right.
The resolution is 3904x864, which is a good resolution (4.5185 ratio), but the screen is smaller than the desktop size. By measuring a screenshot, the best desktop size should be 2307x770.
1024x480 is bad (2.13333 ratio).
Video card is a ATI,
Launch the ATI catalyst control center, linux edition:
$ sudo amdcccle
tried to change configuration by command line using
$ sudo aticonfig --initial=dual-head --overlay-type=Xv --desktop-setup=horizontal,reverse --resolution=0,2300x770
but it crashed the display output
The following package is not installed:
$ sudo dpkg-reconfigure xserve-xorg
I have backed up my xorg.conf:
$ sudo cp /etc/X11/xorg.conf /etc/X11/xorg.conf_date
to stop the current GUI shell, use either
$ sudo /etc/init.d/gdm stop
OR
$ sudo /etc/init.d/kdm stop
and then
$ sudo /etc/init.d/gdm start
OR
$ sudo /etc/init.d/kdm start
to resume the GUI
Alternatively, use ctrl-alt-backspace to restart X11. Warning to windows users: ctrl-alt-del will reboot linux systems.
I haven't figured out what this does:
$ sudo xinit -- :2
and then new desktop is at "ctrl-alt-F9" and old desktop is at ctrl-alt-F7