Dual Monitor in notebook, VGA not allow to config 1920x1080

Hi everyone, im new at linux, rigth now im using manjaro for the first time and it still hard for me knowing that ive been ussing windows all my life =( .
here is the problem… i have connected a secondary monitor (VGA port) but im not allow to set the resolution to 1920x1080, the option does not appear.

ill try to be clearer with the issues that ive notice:

.My monitor supports 1920x1080 but the option does not appear.
.When i enter to screen settings the option of mirror screen is unnabled

as i said this is my firts time using linux so if you can guide me ill send all the information that needs

lspci -v
> `00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Kaveri [Radeon R6 Graphics] (prog-if 00 [VGA controller])

DeviceName: 16
Subsystem: Hewlett-Packard Company Device 221c
Flags: bus master, fast devsel, latency 0, IRQ 47, IOMMU group 0
Memory at c0000000 (64-bit, prefetchable) [size=256M]
Memory at d0000000 (64-bit, prefetchable) [size=8M]
I/O ports at 5000 [size=256]
Memory at d6800000 (32-bit, non-prefetchable) [size=256K]
Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities:
Kernel driver in use: radeon
Kernel modules: radeon, amdgpu
`

xrandr
Screen 0: minimum 320 x 200, current 2467 x 768, maximum 16384 x 16384
VGA-0 connected 1024x768+1443+0 (normal left inverted right x axis y axis) 0mm x 0mm
1024x768 60.00*
800x600 60.32 56.25
848x480 60.00
640x480 59.94
DisplayPort-0 disconnected (normal left inverted right x axis y axis)
eDP connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 309mm x 174mm
1366x768 59.99*+ 39.94
1280x720 59.97
1152x768 59.95
1024x768 59.95
800x600 59.96
848x480 59.94
720x480 59.94
640x480 59.94
DisplayPort-1 disconnected (normal left inverted right x axis y axis)
DisplayPort-2 disconnected (normal left inverted right x axis y axis)

Thanks!!