I have a Dell Latitude Laptop E6440. The laptop have two interfaces, VGA and HDMI. I connect an external monitor to the VGA port, but when I ran the xfce4-display-settings I see only one monitor (the laptop one ofcourse).
How can I make it to recognize the second monitor ? I already tried booting when it is connected. Still no help.
Here is some info:
I am using Xubuntu 14.04:
Linux 3.13.0-30-generic #54-Ubuntu SMP Mon Jun 9 22:45:01 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
I have a dual graphic adapter: One is:
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
Second one is:
01:00.0 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Sun XT [Radeon HD 8670A/8670M/8690M]
xxx@dellorian:~$ xrandr 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 1600x900+0+0 0mm x 0mm 1600x900 77.0*
Here is my /var/log/Xorg.0.log post: http://paste.ubuntu.com/7730096/