My GPU has two DVIouts so i have two monitors, but it's being treated as one logical screen i.e. one DISPLAY :0 and i can drag windows from one monitor to another. How can i run them like two separate displays/screens so the windows wouldn't cross from DISPLAY :0.0 to :0.1 in ubuntu 14.04?
$ lspci | grep VGA 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV630 XT [Radeon HD 2600 XT]
$ sudo lshw -c video *-display description: VGA compatible controller product: RV630 XT [Radeon HD 2600 XT] vendor: Advanced Micro Devices, Inc. [AMD/ATI] physical id: 0 bus info: pci@0000:01:00.0 version: 00 width: 64 bits clock: 33MHz capabilities: pm pciexpress msi vga_controller bus_master cap_list rom configuration: driver=radeon latency=0 resources: irq:46 memory:d0000000-dfffffff memory:fe7e0000-fe7effff ioport:b000(size=256) memory:fe7c0000-fe7dffff