just installed recently an Arch-Linux with bspwm on my laptop :
Dell XPS 9560
And got my 3 screens working :
- Laptop eDP1 screen res. 1920x1080
- Acer HDMI1 screen res. 1920x1080
- Samsung DP2 screen res. 1024x768
Problem occur with the Samsung screen, xrandr return very limited resolutions choices; the monitor normally works in HD resolution (1920x1080 as well).
Here is the return of my xrandr :
[nox@nox:http/sandra]$ xrandr
(04-11 11:45)
Screen 0: minimum 8 x 8, current 4864 x 1080, maximum 32767 x 32767
eDP1 connected primary 1920x1080+2944+0 (normal left inverted right x axis y axis) 350mm x 190mm
1920x1080 59.93*+
1400x1050 59.98
1600x900 60.00
1280x1024 60.02
1280x960 60.00
1368x768 60.00
1280x720 60.00
1024x768 60.00
1024x576 60.00
960x540 60.00
800x600 60.32 56.25
864x486 60.00
640x480 59.94
720x405 60.00
640x360 60.00
DP1 disconnected (normal left inverted right x axis y axis)
DP2 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
1024x768 60.00*
800x600 60.32 56.25
848x480 60.00
640x480 59.94
HDMI1 connected 1920x1080+1024+0 (normal left inverted right x axis y axis) 510mm x 290mm
1920x1080 60.00*+
1280x1024 60.02
1440x900 59.90
1280x800 59.91
1152x864 75.00
1024x768 70.07 60.00
800x600 60.32 56.25
640x480 66.67 59.94
720x400 70.08
HDMI2 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
To configure my two Acer & Samsung screens, i'm using commands :
xrandr --output HDMI1 --mode 1920x1080 --left-of eDP1
xrandr --output DP2 --mode 1024x768 --left-of HDMI1
For DP2, if I try to force use 1920x1080 resolution it returns error :
xrandr: cannot find mode 1920x1080