Support Ubuntu 20.04 LTS (Focal Fossa)

[rjbathgate]

Originally Posted by Stofe7

@rjbathgate, can you compare with "mirror" settings please? I curious about your case.
In my case if I choose mirror, then it will be a kind of usable scenario, but of course I lost the external monitor highest resolution. So the exact case is, Linux screen mode is mirror, resolution is set to the highest one of the internal screen, lid off.

In mirror mode, there is near to no lag, but the resolution achieved makes it pointless (1080 on a 37inch ultrawide monitor...!)

[Stofe7]

Thank you, agree.

[marijic.silvio]

I am using Wavlink WL-UG69PD2 with Dell Latitude 5590 and LG 34U" (3440 x 1440). I faced same issue this morning after upgrade to Ubuntu 20.04 and after upgrading to latest display link driver and switching from Xorg to Wayland I am able to extend screen with external display running above mentioned resolution with no noticeable lag.

Hope it helps someone.

[spences10]

I've been following this thread, I used the support tool to add my zip but don't seem to be able to add files, maybe I need to build up cred on here first? Not sure.

Anyways, my issue is the same.

I have two external monitors going through a DispplayLink box, I upgraded to 20.04 and the screens lag when trying to turn off the built in monitor

My hardware is a Asus Transformer 3 Pro T303UA

Maybe if the mods approve me I can add the support zip?

[bben81]

hi,
i use a lenovo thinkpad L460 with ubuntu 20.04 and dual boot windows 10 with an usb3 targus dockstation. When i use ubuntu 20.04, I have the same problem if I close the laptop screen. In mirror or extended mode, no slowdown.
Under windows, no problem whatever the mode used.

[xitiomet]

I'm also experiencing extreme lag under ubuntu 20.04, using the latest displaylink driver 5.3.1.34

Everything worked fine in 19.04 with displaylink 5.2.14

[micsnare]

Dear friends,

I have been experiencing this issue for quite some time, since I run Arch Linux (rolling-release with always the most recent updates) therefore I run into these problems often and always very early.
I have identified this problem already over a month ago.
This seems to be a problem with the evdi-component that is installed with the displaylink driver (it's a dependency).

Someone has reported this upstream (with the Displaylink developers), since the displaylink driver depends on it.

@JakubDabrowski and @mlukaszek (Michal)

PLEASE REACH OUT TO ME. I'M HAPPY TO COLLABORATE TO GET THIS FIXED WITH YOU.

Here's the link to the evdi-bug report:
https://github.com/DisplayLink/evdi/issues/181

By the way, see the links below.... I have reported similar behaviour in the past quite often:

https://displaylink.org/forum/showthread.php?t=66906
https://displaylink.org/forum/showthread.php?t=65346
https://displaylink.org/forum/showthread.php?t=65281
https://displaylink.org/forum/showthread.php?t=65296

[McGregor80]

I just installed the USB to HDMI extension to may Ubuntu 20.04 LTS. Installed displaylink-driver-5.3.1.34.run. It's a thinkPad laptop with closed screen which is connected through docking station to one DisplayPort screen and one VGA screen.

The USB screen is displaying correctly.
The issue i have is that as soon as i use mouse the cursor starts to jump around and sometimes pixeling. I can't perform basic operations like grab and drag as the cursor location changes. When not using mouse it seems to be stable.

Changing the refresh rate for the USB to HDMI screen from 60 to 50Hz decreased the scale of the issue a little bit, but the problem persists.
Tried to move the mouse to another USB port and even change the mouse

Is there any solution for that ?

[jigglywiggly]

I am using Ubuntu 20.04, Wayland, an rx5700
5.3.1 is the displaylink version

Installation was a breeze, however performance is very bad. I am on a dl 6950
On Windows performance is great, here however it's not usable.

I am using Wayland.
Monitor setup:
Left: 1080p Potrait
Center: 1440p 144hz (On primary gpu)
Right: 4k 60hz

This is a desktop system, I can plug all the displays into the rx5700 and it works fine, but I am testing this device.

There is extreme lag moving the mouse/dragging windows.