Completely unusable in Ubuntu 20.04

[socken23]

I updated to Ubuntu 20.04 on my notebook. The update went smoothly, also installed the latest DisplayLink drivers. When on the dock, the notebook is completely unusable. Every click and typing is delayed by a few seconds.

As soon as I disconnect the dock, everything is back to normal again.

[jarsal]

Same here.
New script works for me, external monitors are working now, but they are unsable.
After connecting dock, cpu usage is above 100% and external monitors are laggy, unsable.
Graphics cards: Radeon Vega 8 Graphics/Radeon RX 560X. Everything is working correctly on windows.

[caitifty]

Same here. Brand new install of ubuntu 20.04 on a brand new dell xp13. Installed the 5.3.1 driver; it works, but glacially slowly - type a command in terminal, sit back, wait three or four seconds for it to display.

[ashishbnv@gmail.com]

same issue for me also.

I created a separate thread here without realising about this thread.

https://displaylink.org/forum/showthread.php?t=67110

[troem]

Hi all,

After upgrading Ubuntu from 18.10 to 20.04 and installing latest driver the performance is extremely poor.

It is ok, if I extend the display to second screen. If I am using the second screen as single display, the performance absolutely unacceptable and you cannot work like this.

[caitifty]

Ok, an update. If I plug my xp13 laptop with a fresh install of 20.04 into my dell displaylink dock (D6000) and *don't* turn off the laptop monitor, everything is fast and useable. It's only if you either use the display settings to turn off the laptop screen (as you normally would for a docked laptop configuration) or physically close the lid of the laptop that everything goes glacial. Not a perfect fix, but at least it makes things workable again.

[Bbar747]

I am using the new dell xps 9300 connect to the dell d6000 running ubuntu 20.04 and unfortunately this is run extremely slow. On ubuntu 18 it all worked just great and now on the 20.04 its a nightmare . I have to leave my lid open to be able to work using the monitor. Thank you

[sproell]

I have the very same issue on my Dell XPS 13 9380 with a fresh Ubuntu 20.04.1 installation. It works well as long as the laptop display is in use. When I turn off the laptop display and want to use only the two monitors attached to my USB-C dock, the system becomes unusable.

* OpenGL version string: 4.6 (Compatibility Profile) Mesa 20.1.5 - kisak-mesa PPA
* DisplayLink 5.3.1

It worked well on the same machine using Ubuntu 18.04.

*Fix*

Applying the XServer patch seems to solve the problem: https://www.displaylink.org/forum/sh...ad.php?t=67148

[thopiekar]

Originally Posted by Bbar747

I am using the new dell xps 9300 connect to the dell d6000 running ubuntu 20.04 and unfortunately this is run extremely slow. On ubuntu 18 it all worked just great and now on the 20.04 its a nightmare . I have to leave my lid open to be able to work using the monitor. Thank you

Don't know how it was in Ubuntu 18.XX, but I'm really pleased with the performance on Ubuntu 20.04 now. I'm collecting all my efforts in a Debian package, which allows to install the driver incl evdi and only requires a reboot.
If there is anyone who has a workaround or whatever solution for the throttle after a closed lid, please let me know!
Apart from that all works nicely (including asking for license agreements and a clear note that I'm not owner of the software included in my package).

[kishornfumble]

same issue is with me.