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I am new to CentOS7 and I am trying to extend my display. I have an Intel graphics chip. I connected the second display to the same graphics card and it is currently only mirroring the first display. I can find no evidence that the system even recognized it as a second screen. What do I have to do to use the second screen as extension?
Desktop environment: GNOME and XFCE
Kernel: 3.10.0-327.36.3.el7.x86_64
One screen is connected to a DisplayPort and one to DVI.
VGA compatible controller: Intel Corporation Sky Lake Integrated Graphics (rev 06)
When running
xrandr -q
I get this:
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 640 x 480, current 1680 x 1050, maximum 1680 x 1050
default connected primary 1680x1050+0+0 0mm x 0mm
1680x1050 0.00*
1280x1024 0.00
1024x768 0.00
800x600 0.00
640x480 0.00
What PC/laptop/motherboard/cpu? How do you connect? Which desktop environment are you using? Kernel version? – Apache – 2016-11-28T15:58:22.287
Desktop environment: GNOME and XFCE Kernel: 3.10.0-327.36.3.el7.x86_64 One screen is connected to a DisplayPort and one to DVI. VGA compatible controller: Intel Corporation Sky Lake Integrated Graphics (rev 06) – Andreas Tosstorff – 2016-11-28T17:44:44.863