Support Ubuntu 20.04 LTS (Focal Fossa)

[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

[mrderooij]

I use a displaylink device (HP portreplicator 3005pr) to switch between Ubuntu desktop and windows laptop. Two monitors.
Issue with the desktop: clean install Ubuntu 20.04 and following displaylinks installation instructions for 5.3.1 driver. Works fine with one monitor connected to video out on the desktop and one one displaylink device.
Both on the displaylink device mouse movement okay, but reactions on actions to slow, serveral seconds (>5), reaction on typing also lagging behind.

Second try: clean install Ubuntu 20.04 and following display link instructions, but instead of libdrm-dev I used the non dev version. same behaviour, but reactions speed now increased tot a lag of 3 seconds when alle displays are on the displaylink device.
Video Both on Displaylink
Video One on Displaylink On on desktop video out

[snipe122]

Hi,

as I wrote in the other thread: don't know how it is for others, but for me the issue seems to be fixed. Can close my lid and still system is responsive...

I guess some recent Ubuntu patch fixed it again?

Update: Unfortunately the issue still exists. It seems it was by pure luck it was working that time. After reboot back to the old 5s lag when lid is closed... !

[mrderooij]

Hey,
checked the issue this morning. Same behaviour.

[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.

[mrderooij]

@jigglywiggly

Having problems? Please check https://www.displaylink.org/forum/sh...ad.php?t=67148

It is working fine so far.

[jigglywiggly]

Originally Posted by mrderooij

@jigglywiggly

Having problems? Please check https://www.displaylink.org/forum/sh...ad.php?t=67148

It is working fine so far.

Hmm, it says that is not for amd only machines which mine is, I will try it anyway though.
EDIT: Went ahead and tried it, rebooted it and it didn't do anything.