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BogdanSikach

Member

Registered: 2017-11-10

Posts: 2

I see only one of two monitors (multi-monitor situation in i3 wm).

I am using i3 window manager.
I have two monitors: LVDS --- internal laptop monitor and VGA-0 --- external monitor.

xrandr

output is:

Screen 0: minimum 320 x 200, current 2646 x 1024, maximum 16384 x 16384
LVDS connected 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
   1366x768       60.0*+
   1280x720       59.9 
   1152x768       59.8 
   1024x768       59.9 
   800x600        59.9 
   848x480        59.7 
   720x480        59.7 
   640x480        59.4 
VGA-0 connected primary 1280x1024+1366+0 (normal left inverted right x axis y axis) 376mm x 301mm
   1280x1024      60.0*+   75.0 
   1152x864       75.0 
   1024x768       75.1     70.1     60.0 
   832x624        74.6 
   800x600        72.2     75.0     60.3     56.2 
   640x480        75.0     72.8     66.7     60.0 
   720x400        70.1

Then if I type, for example,

xrandr --output VGA-0 --auto --right-of LVDS --primary

I can see only one monitor working: VGA-0 (the LVDS becomes dark).
It seems that I can move workspaces between monitors though.

How to fix it?

EDIT: When I close and open my laptop the LVDS is alive. Is it kind of reset? If so how to do it properly?

Last edited by BogdanSikach (2017-11-10 12:13:54)

MFserver

Member

From: Sweden

Registered: 2011-10-28

Posts: 46

Website

Re: I see only one of two monitors (multi-monitor situation in i3 wm).

Try something like

xrandr --output VGA-0 --auto --right-of LVDS --primary --output LVDS --auto

It seems strange that xrandr would turn off the LVDS monitor if you set the VGA as primary, but give it a try.

Also what graphics card and drivers do you have?

---

Sometimes, when I'm trying to get any audio software or hardware working with my system, I wonder why I ditched Windows. But every time I work at a windows computer, I remember it again.

BogdanSikach

Member

Registered: 2017-11-10

Posts: 2

Re: I see only one of two monitors (multi-monitor situation in i3 wm).

The same thing. My laptop monitor gets dark. When I close laptop and open again both monitors awake and all work fine. How to "reset" in a proper way?
BTW,

VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Trinity [Radeon HD 7640G]
    Subsystem: Lenovo Device 3970
    Kernel driver in use: radeon