Even though I used IBM ThinkPad T43 for a month, I just have a chance to give a short talk and presentation in this week. So I have to show my slide on a projector. Anyway, Fn+F7 didn't work as expect like I did in BenQ as well as amdcccle which didn't help. Eventually, I find a right way through command line interface. Note that I use driver from ATI, fglrx 8.38.6.

The command I used is aticonfig. That's it. To activate clone mode, I run below command.

aticonfig --enable-monitor=lvds,crt1

After that I run below command to deactivate the clone.

aticonfig --enable-monitor=lvds

Tags: ati, ubuntu, linux, fglrx