Bsrgvty

I would like to find a wallpaper that best suits my resolution. How can I get the resolution just by writing commands in the command line?

Taken from this answer:

xdpyinfo | grep dimensions

Or to get just the resolution:

xdpyinfo | awk '/dimensions/print $2'

OR

xdpyinfo | grep -oP 'dimensions:s+KS+'

I would just use xrandr:

$ xrandr 
Screen 0: minimum 320 x 200, current 3520 x 1200, maximum 32767 x 32767
LVDS1 connected 1600x900+1920+0 (normal left inverted right x axis y axis) 310mm x 174mm
 1600x900 60.0*+
 1440x900 59.9 
 1360x768 59.8 60.0 
 1152x864 60.0 
 1024x768 60.0 
 800x600 60.3 56.2 
 640x480 59.9 
VGA1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 connected primary 1920x1200+0+0 (normal left inverted right x axis y axis) 518mm x 324mm
 1920x1200 60.0*+
 1920x1080 60.0 50.0 59.9 24.0 24.0 
 1920x1080i 60.1 50.0 60.0 
 1600x1200 60.0 
 1280x1024 75.0 60.0 
 1152x864 75.0 
 1280x720 60.0 50.0 59.9 
 1024x768 75.1 60.0 
 800x600 75.0 60.3 
 720x576 50.0 
 720x480 60.0 59.9 
 640x480 75.0 60.0 59.9 
 720x400 70.1 
HDMI2 disconnected (normal left inverted right x axis y axis)
HDMI3 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
DP3 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

Here I have two screens, the resolution are:

• 1600x900 (laptop)


• 1920x1200 (monitor)

To get only the resolution of your primary monitor, you can also use this python oneliner:

$ python3 -c 'from gi.repository import Gdk; screen=Gdk.Screen.get_default(); 
geo = screen.get_monitor_geometry(screen.get_primary_monitor()); 
print(geo.width, "x", geo.height)'
1920 x 1200

To get the resolution of your extanded desktop (for a multi monitor setup):

$ python3 -c 'from gi.repository import Gdk; screen=Gdk.Screen.get_default(); 
print(screen.get_width(), "x", screen.get_height())'
3520 x 1200

The request was for the resolution. That is given by

xdpyinfo | grep resolution

You can also use:

 xrandr | grep ' connected'

Example of output on one of my machines:

LVDS connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 193mm

For what it's worth, when using multiple connected displays and/or offsets with TwinView then xdpyinfo will give you the resolution of the entire set of displays the way they are configured. If you require the resolution of a single monitor or a monitor connected to one of the display ports you need to use xrandr. However, even in that configuration xrandr can be unreliable and not show the resolution. See this example entry from my X windows config file:

Option "MetaModes" "DP-1: 1440x900 +0+0, DP-3: 1440x900 +1568+0, DP-5: 1440x900 +3136+0"

The xrandr output looks like this:

DVI-D-0 disconnected primary (normal left inverted right x axis y axis)
HDMI-0 disconnected (normal left inverted right x axis y axis)
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 connected 1440x900+0+0 (normal left inverted right x axis y axis) 410mm x 256mm
 1440x900 59.89*+
 1280x1024 60.02
 1280x960 60.00
 1280x800 59.81
 1280x720 60.00
 1152x864 75.00
 1024x768 70.07 60.00
 800x600 75.00 60.32 56.25
 640x480 75.00 72.81 59.94
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 connected (normal left inverted right x axis y axis)
 1440x900 59.89 + 74.98
 1280x1024 60.02
 1280x960 60.00
 1280x800 59.81
 1280x720 60.00
 1152x864 75.00
 1024x768 70.07 60.00
 800x600 75.00 60.32 56.25
 640x480 75.00 72.81 59.94
DP-4 disconnected (normal left inverted right x axis y axis)
DP-5 connected 1440x900+1568+0 (normal left inverted right x axis y axis) 410mm x 256mm
 1440x900 59.89*+
 1280x1024 60.02
 1280x960 60.00
 1280x800 59.81
 1280x720 60.00
 1152x864 75.00
 1024x768 70.07 60.00
 800x600 75.00 60.32 56.25
 640x480 75.00 72.81 59.94

You can see that DP-3 isn't showing a resolution on the line that a grep for "connected" would show. So the best, most consistent, and reliable command I've found for identifying the resolution of any individual connected display is:

/usr/bin/xrandr --query|/usr/bin/grep -A 1 connected|grep -v connected

which produces this:

 1440x900 59.89*+
--
 1440x900 59.89*+ 74.98
--
 1440x900 59.89*+

At that point, it's pretty trivial to pick out the different resolutions or grep for only one port.