Arch Linux

Skeer

Member

Registered: 2009-09-17

Posts: 20

[SOLVED] xrandr connects 2 outputs, but only 1 physically shows up

So the output of my xrandr is:

Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 16384 x 16384
DisplayPort-1 disconnected (normal left inverted right x axis y axis)
DisplayPort-2 disconnected (normal left inverted right x axis y axis)
HDMI-2 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 480mm x 270mm
   1920x1080     60.00*+  50.00    59.94  
   1920x1080i    60.00    50.00    59.94  
   1680x1050     59.88  
   1400x1050     59.95  
   1600x900      59.98  
   1280x1024     75.02    60.02  
   1440x900      59.90  
   1280x800      59.91  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.08    60.00  
   800x600       75.00    60.32  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    60.00    59.94  
   720x400       70.08  
DVI-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 509mm x 286mm
   1920x1080     60.00*+
   1680x1050     59.88  
   1600x900      59.98  
   1280x1024     60.02  
   1440x900      59.90  
   1280x720      59.97  
   1024x768      60.00  
   800x600       60.32  
   640x480       60.00  
   720x400       70.08

But I can only get 1 monitor to physically turn on.

I am using awesome-wm, and it seems to behave like a dual head setup (2 screens are created, etc)

I tried:

xrandr --output DVI-0 --auto --output HDMI-2 --auto

or

xrandr --output DVI-0 --auto --output HDMI-2 --auto --right-of DVI-0

And that will only turn on 1 monitor. However, if I turn either outputs off, then the monitor will switch to the corresponding connected output.

Does anyone have any idea on how I can have both monitors on at the same time?

Last edited by Skeer (2015-06-07 15:36:02)

Skeer

Member

Registered: 2009-09-17

Posts: 20

Re: [SOLVED] xrandr connects 2 outputs, but only 1 physically shows up

I experiemented with xrandr a bit, and I can get both monitors to show up if at least 1 of them is running in 1680x1050.

xrandr --output DVI-0 --mode 1680x1050 --output HDMI-0 --mode 1680x1050 --right-of DVI-0

or

xrandr --output DVI-0 --mode 1680x1050 --output HDMI-0 --mode 1920x1080 --right-of DVI-0

But whenever I specify both to be 1920x1080, only 1 monitor will work.

Edit: This guy seems to have the same problems...

Edit 2: Updating to linux 4.0.5 seems to have solved the issue

Last edited by Skeer (2015-06-07 15:35:20)