I have a Dell Latitude 5490 and two external monitors connected via a USB-C dock (Dell D6000). Both Xubuntu 18.04.1 and Windows 10 are installed on the laptop using dual boot.
The monitors are not detected by Xubuntu but they work fine with Windows 10. I have tried the suggested solution as listed below but with no luck. I have also updated the NVIDIA driver and used the latest one but did not make any difference. No luck with the X.Org X server driver either. Any suggestion is highly appreciated!
External monitor not detected with USB-C adapter
https://ubuntuforums.org/showthread.php?t=2393560 For this, I have been unable to find the similar option in the bios of my laptop.
External monitor not detected on Ubuntu 18.04
The output from xrandr
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192 eDP-1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 309mm x 174mm 1920x1080 60.02*+ 60.01 59.97 59.96 59.93 47.99 1680x1050 59.95 59.88 1600x1024 60.17 1400x1050 59.98 1600x900 59.99 59.94 59.95 59.82 1280x1024 60.02 1440x900 59.89 1400x900 59.96 59.88 1280x960 60.00 1440x810 60.00 59.97 1368x768 59.88 59.85 1360x768 59.80 59.96 1280x800 59.99 59.97 59.81 59.91 1152x864 60.00 1280x720 60.00 59.99 59.86 59.74 1024x768 60.04 60.00 960x720 60.00 928x696 60.05 896x672 60.01 1024x576 59.95 59.96 59.90 59.82 960x600 59.93 60.00 960x540 59.96 59.99 59.63 59.82 800x600 60.00 60.32 56.25 840x525 60.01 59.88 864x486 59.92 59.57 800x512 60.17 700x525 59.98 800x450 59.95 59.82 640x512 60.02 720x450 59.89 700x450 59.96 59.88 640x480 60.00 59.94 720x405 59.51 58.99 684x384 59.88 59.85 680x384 59.80 59.96 640x400 59.88 59.98 576x432 60.06 640x360 59.86 59.83 59.84 59.32 512x384 60.00 512x288 60.00 59.92 480x270 59.63 59.82 400x300 60.32 56.34 432x243 59.92 59.57 320x240 60.05 360x202 59.51 59.13 320x180 59.84 59.32 DP-1 disconnected (normal left inverted right x axis y axis) DP-2 disconnected (normal left inverted right x axis y axis) HDMI-1 disconnected (normal left inverted right x axis y axis)
