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I am trying to use two monitors on Ubuntu 20.04.4 with the wavlink UG7602HC USB3.0/USB-C to HDMI Dual Display Adapter (Model: WL-UG7602HC):

$ uname -a
Linux 5.13.0-27-generic Ubuntu SMP x86_64 x86_64 x86_64 GNU/Linux

CPU: Intel i5-7400 (4) @ 3.500GHz 
GPU: Intel HD Graphics 630

I install the DisplayLink software on Ubuntu 20.04 (as described here) the download from DisplayLink support for Ubuntu now available

Distribution discovered: Ubuntu 20.04.4 LTS
WARNING: Version 1.10.1 of EVDI kernel module is already running.

The device is already connected to the system:

$ lsusb                         
Bus 002 Device 010: ID 090c:0768 Silicon Motion, Inc. - Taiwan (formerly Feiya Technology Corp.) SMI USB Display

When I try to connect the two monitors, Nothing happens.

The two monitors, have the following resolutions:

Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384
HDMI-1 disconnected (normal left inverted right x axis y axis)
DP-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 509mm x 286mm
   1920x1080     60.00*+
   1680x1050     59.95  
   1280x1024     75.02    60.02  
   1440x900      74.98    59.89  
   1280x960      60.00  
   1280x800      59.81  
   1152x864      75.00  
   1024x768      75.03    70.07    60.00  
   800x600       75.00    60.32  
   640x480       75.00    59.94  
DVI-I-4-4 disconnected (normal left inverted right x axis y axis)
DVI-I-3-3 disconnected (normal left inverted right x axis y axis)
DVI-I-2-2 disconnected (normal left inverted right x axis y axis)
DVI-I-1-1 disconnected (normal left inverted right x axis y axis)

For some reason, the computer does not detect the monitors.

Someone has some idea how to fix this?

Any suggestion is welcome :)

Thank you!

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  • $ Linux 5.13.0-27-generic #29~20.04.1-Ubuntu SMP x86_64 x86_64 x86_64 GNU/Linux Commented Apr 26, 2022 at 1:57
  • Thanks for the reply! I already did what you describe above. Commented Apr 26, 2022 at 2:33
  • This is a big problem! Problem not solve yet :( wavlink display is so expensive! This is bad. Commented Apr 27, 2022 at 2:20

2 Answers 2

1

I downloaded the Latest Official Driver from https://www.synaptics.com/products/displaylink-graphics/downloads/ubuntu. It was a zip file containing two files, the first being instructions and the second being:

$ file displaylink-driver-5.7.0-61.129.run 
displaylink-driver-5.7.0-61.129.run: POSIX shell script executable (binary data)

After chmod 700 on that .run file and running it, it installed some packages and asked me to create a password. It then rebooted and asked me for that same password. The two monitors (plus my laptop) started working.

0

I had the same problem and I was able to solve it in the following way:

  • disable Secure Boot in UEFI

  • uninstall DisplayLink driver -> sudo displaylink-installer --uninstall

  • Install the driver again (downloaded from the official display page)

  • restart computer

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  • There's no need to uninstall/reinstall, that's an unfortunate symptom of "Windows mentality". Commented Jul 19, 2022 at 20:43
  • Although you do not believe it. it was necessary to do the process with a windows mentality. without uninstalling the driver the monitor was not detected and when I reinstalled it it worked
    – pokez
    Commented Jul 20, 2022 at 21:14

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