How to retrieve monitors configuration from the command line?
Solution 1
This is heavily dependent on the set up of the system. One way to get the information would be if xrandr
is being used:
xrandr --query
This will display something like:
Screen 0: minimum 320 x 200, current 3046 x 1050, maximum 8192 x 8192
VGA1 connected 1680x1050+1366+0 (normal left inverted right x axis y axis) 473mm x 296mm
1680x1050 60.0*+
1280x1024 75.0 60.0
1152x864 75.0
1024x768 75.1 60.0
800x600 75.0 60.3
640x480 75.0 60.0
720x400 70.1
LVDS1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 353mm x 198mm
1366x768 60.0*+
1360x768 59.8 60.0
1024x768 60.0
800x600 60.3 56.2
640x480 59.9
DP1 disconnected (normal left inverted right x axis y axis)
You could then use some text processing tool to pull out the resolution for each display.
Solution 2
You could try using the tool monitor-edid, which produces output like this
Name: DELL 2407WFP
EISA ID: DELa017
EDID version: 1.3
EDID extension blocks: 0
Screen size: 52.0 cm x 33.0 cm (24.25 inches, aspect ratio 16/10 = 1.60)
Gamma: 2.2
Digital signal
Max video bandwidth: 170 MHz
HorizSync 30-83
VertRefresh 56-76
# Monitor preferred modeline (60.0 Hz vsync, 74.0 kHz hsync, ratio 16/1)
ModeLine "1920x1200" 154 1920 1968 2000 2080 1200 1203 1209 1235 -hsyncc
This is useful if you don't want to have X running when you want to probe your monitor information.
Solution 3
xrandr
only works on newer X servers with the RandR extension. Granted, that should be true of everything these days, but in case not…
xdpyinfo
also prints out per-screen information, including dimension (pixel and physical size).
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Aikanaro
Updated on September 17, 2022Comments
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Aikanaro over 1 year
I am making a script that needs to access the computer's monitor(s) configuration. How can I do that? Is there a command or a file I could read where I can access this information?
At the moment, I do:
xwininfo -root
But I only have the total resolution and not the details. What I need is the resolution of each screen individually.
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Admin about 3 yearsWhen I use that I always get back
xwininfo: error: unable to parse display name ""
and I have no idea how to find out any display names...
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Aikanaro over 13 yearsxdpyinfo just detects one screen in my dual-monitor configuration (with a size which is the sum of both size, same thing as xwininfo -root). Is this normal?
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ephemient over 13 years@nbarraille: Depends on Zaphod mode. The new style setup has a single screen that all the monitors are arranged in, but the classic layout was to have a separate screen per monitor.
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fivedogit over 3 yearsIt would be helpful if you explained what this package is and how to get it. Links break, as yours has.
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jsbillings over 3 yearsI’m sorry my post from over 9 years ago had a broken link. I used google and found the git repo for the tool and replaced the link. The code parses several sources, so I suggest you look at it before it disappears too.