Support Ubuntu 20.04 LTS (Focal Fossa)

micsnare · 05-16-2020, 08:24 AM

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 · 05-22-2020, 08:49 AM

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 · 05-24-2020, 11:34 AM

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 · 06-04-2020, 02:35 PM

Hey,
checked the issue this morning. Same behaviour.

05-22-2020, 08:49 AM	#2
mrderooij Junior Member Join Date: May 2020 Posts: 5	Desktop Displaylink behaviour 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

05-24-2020, 11:34 AM	#3
snipe122 Junior Member Join Date: Feb 2019 Posts: 27	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... ! Last edited by snipe122; 05-26-2020 at 05:31 AM.

06-04-2020, 02:35 PM	#4
mrderooij Junior Member Join Date: May 2020 Posts: 5	issue checked this morning, no progress Hey, checked the issue this morning. Same behaviour.

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05-16-2020, 08:24 AM	#1
micsnare Junior Member Join Date: Dec 2016 Posts: 14	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