I have a Dell Inspirion 5520 laptop running Linux Mint 15 which has the following graphics cards
$ lspci | grep -i vga
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Thames XT [Radeon HD 7670M]
I've yet to find decent driver which will allow me to use 1 monitor which is connected via the VGA port, 1 monitor using the HDMI port and the laptop monitor. It seems to allow either 1 external monitor and the internal laptop monitor OR 2 external monitors without the internal laptop monitor.
Does anyone have any experience with multiple monitors on a multiheaded card?