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Toshiba Satellite not detecting VGA connection

Machine:   System: TOSHIBA product: Satellite C75D-B v: PSCLEU-003002
Mobo: TOSHIBA model: Portable PC v: MP Bios: Insyde v: 1.10 date: 04/30/2014essor

Graphics: Card: Advanced Micro Devices [AMD/ATI] Mullins [Radeon APU A4-6000 with R2 Graphics] Display Server: X.Org 1.16.0 drivers: fbdev,ati,radeon (unloaded: vesa)
           Resolution: 1600x900@0.00hz
GLX Renderer: Gallium 0.4 on llvmpipe (LLVM 3.4, 128 bits) GLX Version: 3.0 Mesa 10.2.4

CPU: Quad core AMD A6-6310 APU with AMD Radeon R4 Graphics (-MCP-) cache: 8192 KB
           Clock Speeds: 1: 1000 MHz 2: 1600 MHz 3: 1000 MHz 4: 1000 MHz

lspci | grep VGA 00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Mullins [Radeon APU A4-6000 with R2 Graphics]

xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1600 x 900, current 1600 x 900, maximum 1600 x 900
default connected primary 1600x900+0+0 0mm x 0mm
   1600x900       0.00*

I am in the testing branch, using KDE.

I could also post xorg log, but it is very big, will do if somebody requests it.


The problem is that this laptop does not detect a VGA monitor plugged into it, and I need an additional monitor for work purposes. I have been told that a fix could be to load kernel 3.16, but it is still in experimental and I don't want to compromise stability of system.
I still did not test plugging in a HDMI monitor.
In older hardware the KDE display applet detects immediately additional monitor and offers to configure it, in this one it only displays default monitor, no other options.
Please help.
Thanks in advance.

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