Multi-Screens Issue

Question

Greeting all, just installed Ubuntu 16.04 LTS my PC use a intel graphic display with two monitors. But I can't detect the second monitor.

xrander output:

Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
DP1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
VGA1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 477mm x 268mm
   1920x1080     60.00*+
   1680x1050     59.95  
   1600x900      60.00  
   1280x1024     75.02    60.02  
   1440x900      59.89  
   1280x800      59.81  
   1152x864      75.00  
   1280x720      60.00  
   1024x768      75.08    70.07    60.00  
   832x624       74.55  
   800x600       72.19    75.00    60.32    56.25  
   640x480       75.00    72.81    66.67    60.00  
   720x400       70.08  
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

xrandr output with two monitors:

Screen 0: minimum 8 x 8, current 3200 x 1080, maximum 32767 x 32767
DP1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected 1280x1024+1920+0 (normal left inverted right x axis y axis) 0mm x 0mm
   1280x1024     75.02* 
VGA1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 477mm x 268mm
   1920x1080     60.00*+
   1680x1050     59.95  
   1600x900      60.00  
   1280x1024     75.02    60.02  
   1440x900      59.89  
   1280x800      59.81  
   1152x864      75.00  
   1280x720      60.00  
   1024x768      75.08    70.07    60.00  
   832x624       74.55  
   800x600       72.19    75.00    60.32    56.25  
   640x480       75.00    72.81    66.67    60.00  
   720x400       70.08  
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

Any advise?

open a terminal and type the command xrandr. Edit your answer to include the output of this command. — Organic Marble, May 16 '16 at 18:34
Based on xrandr I see only one monitor and that's plugged into the VGA port. How is the 2nd monitor connected? — Organic Marble, May 16 '16 at 19:13
Correct and the VGA port is showing the other screen connect through DVI port. — user544735, May 16 '16 at 19:19
Hmm, I don't see a DVI port listed in the xrandr output. On my system it's listed as DVI-0. Are you sure that your card supports this output? It appears that your card has DisplayPort, HDMI, and VGA outputs. — Organic Marble, May 16 '16 at 19:21
When I'm trying: xrandr --output HDMI1 --mode 1024x768 --same-as VGA1 it's duplicate the screen to both monitors. is there any way to split it? — user544735, May 16 '16 at 19:30
I think there is a graphical way in Ubuntu. Check the Systems Setting items. I use Lubuntu, so I have to use a command like xrandr --output VGA-0 --left-of DVI-0 --primary. This moves the image on VGA to the left of the DVI image and sets it as the primary monitor. — Organic Marble, May 16 '16 at 19:36
Cool, it's working if I'm doing the following:
xrandr --addmode HDMI1 1280x800 xrandr --output HDMI1 --mode 1280x800 --right-to VGA1

Is there any automatclly way on doing this? I do not want to do it everytime I'm rebooting — user544735, May 16 '16 at 19:41
I made a script that runs when I log in. That's pretty easy to do in Lubuntu, I think you can add it to the Startup Items in Ubuntu. How about I post the results of this conversation as an answer? — Organic Marble, May 16 '16 at 19:46

score 0 · Answer 1 · answered May 16 '16 at 19:48

0

Based on the xrandr output you posted, it looks like your card or driver does not support the DVI output. Try using one of the other outputs, and make a simple xrandr script to configure your monitors at login.

My login script is just one line like this:

xrandr --output VGA-0 --left-of DVI-0 --primary

I called it lxde-setup.sh and added it to the startup actions.

answered May 16 '16 at 19:48

Organic Marble

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Is there any way I can setup a different resolution to each screen? – user544735 May 16 '16 at 19:55
xrandr can do a lot of things. there is a --newmode and --addmode options that lets you add resolutions that aren't listed in xrandr. You can use the cmd cvt [width] [height] [hz] to create the data you need. Not every resolution is possible on every card. See this question http://askubuntu.com/questions/377937/how-to-set-a-custom-resolution and this question http://askubuntu.com/questions/63681/how-can-i-make-xrandr-customization-permanent/63855 – Organic Marble May 16 '16 at 19:59
And, if this information helps you, please consider accepting the answer by clicking the grey check mark! – Organic Marble May 16 '16 at 20:00
Is there any way to give each screen a diffrent resolution? – user544735 May 16 '16 at 20:06
I managed to see now in both screen but I'm stuck on the part of the resultion. I've looked on the link you sent and It didn't helped me. – user544735 May 16 '16 at 20:23
I might be able to suggest something if you run xrandr again with both monitors working and paste the output into your question. – Organic Marble May 16 '16 at 20:47
I've added it to the orignial post. – user544735 May 17 '16 at 03:36
What you added does not show anything connected to the HDMI port. – Organic Marble May 17 '16 at 14:14
You are correct, but still I can't work with two monitors. This is very strange... – user544735 May 17 '16 at 17:41

Multi-Screens Issue

1 Answers1