How can I set up dual monitor display with ATI driver?
I have 11.10 running on a system76 laptop. without the proprietary driver i was able to set up a second monitor (samsung 19") with extended display.
when i activate the proprietary driver, the only display setting that works is "mirror". when i pick to extend the display at the proper resolution (1280:1084, samsung) (1600:900, laptop) for each screen I get the following:
required virtual size does not fit available size: requested=(2880, 1024), minimum=(320, 200), maximum=(1600, 1600).
when i try to execute the resolutions that are set at default, after unchecking the "mirror screens" button (1152:864, samsung) (1600:900, laptop) i get the following:
requested position/size for CRTC 148 is outside the allowed limit: position=(1152, 0), size=(1152, 864), maximum=(1600, 1600)
Type in this command, to open the AMD Catalyst Control Center
gksudo amdcccle
- Go to Display manager > There you must see your monitors.
- Click on the Monitor you want to setup display on
- Go to Multiple Screen Tab
- Change the display mode to your choice
- Apply this and restart
Open a terminal and type:
gksudo gedit /etc/X11/xorg.conf
In the sub-section "display" add this code or modify if already exist:
virtual 2880 1024
Where 2880 and 1024 are the value returned by the error: required virtual size does not fit available size: requested=(2880, 1024), minimum=(320, 200), maximum=(1600, 1600).
Restart the computer.
Then you will be able to extend your desktop without issue.