Ubuntu 17.04 works

[ajbogh]

I upgraded my machine to 17.04 and installed the latest version of DisplayLink (1.3.43) but the display isn't working using the DVI connection on a Thinkpad Pro docking station.

Networking is also not working.

If there is a way to get the logs, please let me know the commands and I'll paste the responses here.

[ajbogh]

Networking was broken because Ubuntu decided to stop managing the network interface, so that wasn't related. I fixed it by creating a blank file for the network manager to see.

sudo touch /etc/NetworkManager/conf.d/10-globally-managed-devices.conf

The 3rd monitor that I have connected to the DisplayLink interface showed up in the displays tool, and I enabled it, however it still doesn't receive signal using a DVI to VGA converter.

[ajbogh]

It works!

I had 1.3.43 installed when it showed the monitor in displays and didn't turn it on, and that would have worked, but I decided to uninstall it anyway and install 1.3.52 instead to see if that was the problem.

After a reboot with the new kernel module installed I noticed the same issue -- display is enabled but not displaying anything. Then I decided to wiggle the DVI connection and found that it was ever-so-slightly off kilter. Once I fully seated the adapter the monitor turned on! Go figure.

[ajbogh]

Sadly, upon further testing, the DisplayLink monitor is only running at 1fps. There is some configuration that Ubuntu uses which is slowing the refresh rate. It may be related to various other Intel-based mouse flickering issues because my mouse is flickering as well.

Suggestions to disable vsync in ccsm don't help and drivers are all up to date.

[ajbogh]

The 1fps lag issue can be fixed by creating or editing the following configuration file (only with Intel-based graphics drivers). Make sure to install the Intel Graphics Update Tool for Linux.

This configuration also fixes most of the mouse flickering, yet it will still blink every once in awhile (seems to be when CPU is under load and the mouse is moved). The mouse problem is unrelated to DisplayLink.

/usr/share/X11/xorg.conf.d/20-intel.conf

Section "Device"
  Identifier "Intel Graphics"
  Driver "Intel"
  Option "AccelMethod" "sna"
  Option "TearFree" "true"
  Option "TripleBuffer" "true"
  Option "MigrationHeuristic" "greedy"
  Option "Tiling" "true"
  Option "ExaNoComposite" "false"
  Option "Pageflip" "true"
EndSection

Edit: Deduped some lines.

[displaylink-mlukaszek]

This is a very useful comment, thank you! I'll post this workaround to our forum for people using Intel.

[robmi77]

@ajbogh the Section in 20-intel.conf plus the empty file for the NetworkManager did the trick. Upgraded to 17.04, running 4.10.0-19-generic and evdi 1.3.52 with intel graphics.
2 external Monitors and a Targus USB docking station. All works as before (16.04).
Many thanks!

[ironman-hythloday]

I've actually just had to create the blank /etc/NetworkManager/conf.d/10-globally-managed-devices.conf file as well to get my Ethernet connection working... sadly, it kills my wifi connection. So, I can have EITHER wifi or wired, but not BOTH, like I used to.

[cmachler]

Just creating the /usr/share/X11/xorg.conf.d/20-intel.conf file from @ajbogh fixed the issue for me.
Cheers!

[aremai]

Is this fix with the /usr/share/X11/xorg.conf.d/20-intel.conf only working on Ubuntu 17.04 ?
At the moment I'm running on 16.04.2 LTS

[ajbogh]

@aremai the Intel.conf file should also work for 16.04. A little more tweaking might be needed to fix the flickering, but otherwise it should work.