So i gave up on fglrx driver due to unsupported GPUs now i'm on regular radeon drivers with 4 monitors on 14.04. I got them all to work perfectly fine with All Settings/Displays mirror mode but when if i try to uncheck Mirrored Display i get "The selected configuration for displays could not be applied/could not set the configuration for CRTC 64" pop up error and either both monitors 3&4 just freeze with last image, or 3 works but 4 just goes black with no signal
$ sudo lspci -nn | grep VGA
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] RV630 XT [Radeon HD 2600 XT] [1002:9588]
04:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] RV630 XT [Radeon HD 2600 XT] [1002:9588]
and
$ 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:c0000000-cfffffff memory:fe6e0000-fe6effff ioport:a000(size=256) memory:fe6c0000-fe6dffff
*-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@0000:04:00.0
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:47 memory:d0000000-dfffffff memory:fe9e0000-fe9effff ioport:d000(size=256) memory:fe9c0000-fe9dffff
more info
$ sudo xrandr
Screen 0: minimum 320 x 200, current 7680 x 1200, maximum 8192 x 8192
DVI-0 connected primary 1920x1200+0+0 (normal left inverted right x axis y axis) 519mm x 324mm
1920x1200 60.0*+
1600x1200 60.0
...more resolutions...
DIN disconnected (normal left inverted right x axis y axis)
DVI-1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 531mm x 299mm
1920x1080 60.0*+ 50.0 59.9
1920x1080i 60.1 50.0 60.0
...more resolutions...
DVI-1-2 connected 1920x1080+3840+0 527mm x 296mm
1920x1080 60.0*+ 50.0 59.9 30.0 30.0
1920x1080i 60.1 50.0 60.0
...more resolutions...
DIN-1-1 disconnected
DVI-1-3 connected 1920x1080+5760+0 527mm x 296mm
1920x1080 60.0*+ 50.0 59.9 30.0 30.0
1920x1080i 60.1 50.0 60.0
...more resolutions...
1920x1080 (0x45) 148.5MHz
h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 67.5KHz
v: height 1080 start 1084 end 1089 total 1125 clock 60.0Hz
...more resolutions...
Edit
ATI card with radeon driver, anyone?
