Dual monitors

Questions about hardware,drivers and peripherals
Forum rules
Before you post please read how to get help
Level 1
Level 1
Posts: 1
Joined: Wed Oct 29, 2008 11:17 am

Dual monitors

Postby heterosankari » Wed Oct 29, 2008 11:40 am

Well, i have dual monitors, and only 1.monitor works. My graphic card is Club CGA-P968TDV / Ati radeon 9600 pro. And when booting:
grub: are shown in both monitors
OS loading: second monitor says "Resolution too high"
desktop using: see images on http://www.gimp-suomi.org/sakari/monitors/

User avatar
Level 6
Level 6
Posts: 1057
Joined: Fri Feb 16, 2007 2:26 am

Re: Dual monitors

Postby grimdestripador » Wed Oct 29, 2008 11:58 am

For the monitor that says "OUT OF RANGE", you need to edit /etc/X11/xorg.conf
See the line about vertical and horizontal scanning frequencies. You need to set those to the specs of your monitor.

or the simplest approach is (from memory, not at linux station currently)

Code: Select all

sudo dpkg-reconfigure xserver-xorg -phigh

to revert to some generic settings like 1024x768. This will disable 3d acceleration, so if you want it yo'd need to...

Code: Select all

sudo dpkg-reconfigure xserver-xorg

then follow onscreen instructions (be sure to researching vertical and horizontal freq ahead of time)

Grub shows on both monitors, because the video card is still in boot up mode. As soon as the video card is initalized at startup, the settings you choose take effect. My experiance with ATi cards are mixed. But generally xinerama is the easiest way to get dual monitors. The second montor appears like a disco floor untill its memory buffer is initalized, which is done by either the 3D ATI binary drivers or configure xinerama to occupy that monitor

Return to “Hardware Support”

Who is online

Users browsing this forum: austin.texas, marlenejo and 3 guests