USER@idefix:~$ lspci -nnk | grep "VGA\|'Kern'\|3D\|Display" -A2
01:05.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] RS880M [Mobility Radeon HD 4225/4250] [1002:9712]
Subsystem: Acer Incorporated [ALI] Device [1025:0429]
Kernel driver in use: radeon
USER@idefix:~$ xrandr --prop
Screen 0: minimum 320 x 200, current 1366 x 768, maximum 8192 x 8192
VGA-0 disconnected (normal left inverted right x axis y axis)
load detection: 1
range: (0, 1)
LVDS connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 256mm x 144mm
EDID:
00ffffffffffff0006af5c2000000000
01120103801a0e780a99859555569228
22505400000001010101010101010101
01010101010196195628500008301810
24000090100000180000000f00000000
00000000000000000020000000fe0041
554f0a202020202020202020000000fe
004231313658573032205630200a00f8
scaling mode: Full
supported: None, Full, Center, Full aspect
1366x768 60.0*+
1280x720 59.9
1152x768 59.8
1024x768 59.9
800x600 59.9
848x480 59.7
720x480 59.7
640x480 59.4
HDMI-0 disconnected (normal left inverted right x axis y axis)
underscan vborder: 0
range: (0, 128)
underscan hborder: 0
range: (0, 128)
underscan: off
supported: off, on, auto
coherent: 1
range: (0, 1)