how to use multi-display under normal user? - ati, fglrx

[pd1986]

Hello, I would like get multi-display under the normal user when I connect another monitor. The graphic card is ATI, I use fglrx driver.

In fact, the catalyst control tool (amdcccle) could do this if I have the administrator permission. So if I log in by root and start the X server, I could get the multi-display by changing the display option in catalyst control tool (amdcccle). It works if I change the option in X server environment and restart the X server. It works perfectly.

But if I log in by my own account, a normal user, I could do nothing if I only run amdcccle. I couldn't get multi-display even if I run sudo amdcccle. For exemple, I run sudo amdcccle under X-server and change the display option to multi-display, and restart the X server. It doesn't work, and if I run amdcccle ( under normal user, not sudo ), the display option is still unchanged.

I find catalyst control tool very convinient, I hope there is an solution which allow me to make some changes and get multi-display by amdcccle. If someone has a solution which need some text-form changes in files, it will be great too.

Thank you in advance.

[pd1986]

I tried several times recently, sometimes it works if I run "sudo amdcccle", sometimes it doesn't and it ask me to restart the X server to make the configuration work. I don't why. Maybe the problem is related of desktop environment? I run xfce in my laptop.

[sobhan]

i use the open source driver and i dont have any problem for dual screen it automaticly work's

[pd1986]

[BillyD]

Not sure if this is still an issue for you, but I just sorted this out myself yesterday after lots of googling and playing with xorg files.

Here is what ended up working for me:

/etc/X11/xorg.conf

[pd1986]