DisplayLink Forum - DisplayLink stopped working on 18.04

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- - DisplayLink stopped working on 18.04 (https://displaylink.org/forum/showthread.php?t=67228)

DisplayLink stopped working on 18.04

Came in today and my 2 Display Link Monitors are not working.
Dock: plugable ULTC4k (USB-C 4K)
uname -a:

Code:

xxxxxxx 5.4.0-42-generic #46~18.04.1-Ubuntu SMP Fri Jul 10 07:21:24 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

What I've tried:
connecting/disconnecting monitors and USB-C cable; cycling power on dock station; re-installing drivers (5.2.14).
Error on reinstalling:

Code:

ERROR (code 3): Failed to build evdi/5.2.14. Consult /var/lib/dkms/evdi/5.2.14/build/make.log for details..

The above-mentioned log has the following:

Code:

DKMS make.log for evdi-5.2.14 for kernel 5.4.0-42-generic (x86_64)

Thu Jul 23 13:39:02 EDT 2020

make KBUILD_VERBOSE=1 SUBDIRS=/var/lib/dkms/evdi/5.2.14/build SRCROOT=/var/lib/dkms/evdi/5.2.14/build CONFIG_MODULE_SIG= -C /lib/modules/5.4.0-42-generic/build modules

make[1]: Entering directory '/usr/src/linux-headers-5.4.0-42-generic'

make -f ./Makefile syncconfig

make -f ./scripts/Makefile.build obj=scripts/basic

rm -f .tmp_quiet_recordmcount

make -f ./scripts/Makefile.build obj=scripts/kconfig syncconfig

  flex -oscripts/kconfig/lexer.lex.c -L scripts/kconfig/lexer.l

/bin/sh: 1: flex: not found

scripts/Makefile.host:9: recipe for target 'scripts/kconfig/lexer.lex.c' failed

make[3]: *** [scripts/kconfig/lexer.lex.c] Error 127

make[3]: *** Waiting for unfinished jobs....

  bison -o scripts/kconfig/parser.tab.c --defines=scripts/kconfig/parser.tab.h -t -l scripts/kconfig/parser.y

/bin/sh: 1: bison: not found

scripts/Makefile.host:17: recipe for target 'scripts/kconfig/parser.tab.h' failed

make[3]: *** [scripts/kconfig/parser.tab.h] Error 127

Makefile:594: recipe for target 'syncconfig' failed

make[2]: *** [syncconfig] Error 2

Makefile:704: recipe for target 'include/config/auto.conf.cmd' failed

make[1]: *** [include/config/auto.conf.cmd] Error 2

make[1]: Leaving directory '/usr/src/linux-headers-5.4.0-42-generic'

Makefile:22: recipe for target 'all' failed

make: *** [all] Error 2

Also ran lsusb -d 17e9:
lsusb -d 17e9:

Code:

Bus 004 Device 004: ID 17e9:6012 DisplayLink

I'm attaching logs from troubleshooting tool as well.

Exact same issue here.

Same issue here with driver version 5.3.1.34.
Reinstalling the driver does not help.
With previous kernel the system is working properly.

Same issue after a kernel upgrade

I have the same issue after a kernel upgrade from 5.3.0-59-generic to 5.4.0-42-generic.

Downgrade kernel as a temp solution

I had to downgrade to the previous kernel to get my second monitor working again.

In case anyone runs into the same issue I did whereby switching to 5.3.0-X kernel brought up the monitors ok but made it run super slow. Turning the laptop monitor on solved the issue per

https://bugs.launchpad.net/ubuntu/+b...15/comments/12

A superwide monitor is starting to look good on days like today!

Any Update/ETA on fix for 5.0.42 kernel?

I'm not seeing any movement on this, should I be reporting to another channel (git, etc.)?

Hello,

Please make sure that you are not missing the tools necessary for the installation.
You have to run following command prior to installing the newest driver:

Code:

sudo apt install build-essential dkms

You can also check the following article: https://support.displaylink.com/know...on-ubuntu-20-0

Please give that a try and let me know if it helped.

Best regards,
Katarzyna

Quote:

Originally Posted by KatarzynaKowalczyk (Post 90471)

Hello,

Please make sure that you are not missing the tools necessary for the installation.
You have to run following command prior to installing the newest driver:

Code:

sudo apt install build-essential dkms

You can also check the following article: https://support.displaylink.com/know...on-ubuntu-20-0

Please give that a try and let me know if it helped.

Best regards,
Katarzyna

Hello,

i have both packages installed and the driver version 5.3.1 is installed and working properly together with the older kernel 5.3.0-62.
It stopped working with the delivery of the newest ubuntu 18.04 kernel version 5.4.0-42.

I tried again to uninstall der displaylink driver. Reboot with the newest kernel. Install all updates. Ensure that build-essential and dkms is installed and tried again to install the displaylink driver as described in article 1944022-how-to-install-displaylink-software-on-ubuntu-20-0 with the same result.
If i switch back to the older kernel it directly start working again.

It seems to be that the driver is incompatible with the actual ubuntu 18.04 kernel.

BR
Stefan

Stopped working, ubuntu 18.04 dell d6000

I get the same issue as the people above.
Came into the office and everything worked, but after installation off all pending updates there is no picture on the two connected monitors.

Quote:

Originally Posted by KatarzynaKowalczyk (Post 90471)

Hello,

Please make sure that you are not missing the tools necessary for the installation.
You have to run following command prior to installing the newest driver:

Code:

sudo apt install build-essential dkms

You can also check the following article: https://support.displaylink.com/know...on-ubuntu-20-0

Please give that a try and let me know if it helped.

Best regards,
Katarzyna

Hi Katarzyna,

I noticed in the above reply you linked to the docs relating to the latest (Ubuntu 20) driver, however this thread relates to Ubuntu 18.04. Was that a typo, or are you suggesting that for Ubuntu 18.04 under kernel 5.4 we should be using the latest DisplayLink driver (which isn't listed as being compatible with 18.04)?

In case it's helpful, I'm also experiencing this issue after a reboot (so I assume some updates have now completed on restart), and am seeing the following error from the DisplayLink service:

Code:

Starting DisplayLink Driver Service...

modprobe: FATAL: Module evdi not found in directory /lib/modules/5.4.0-42-generic

Quick update in case it helps anyone:

After reading the previous reply linking to the docs for the latest driver version (which only states it is compatible with Ubuntu 20.04), I also found someone had solved this issue by installing the latest driver on 18.04 (in this thread on the AskUbuntu Forums).

I've now tried that myself, and can confirm DisplayLink is again working, and both of my external monitors are functioning as expected.

Greetings.

This is still broken, per my previous posting:

https://www.displaylink.org/forum/sh...ad.php?t=67160

Per the above:

Quote:

Originally Posted by KatarzynaKowalczyk (Post 90471)

Hello,

Please make sure that you are not missing the tools necessary for the installation.
You have to run following command prior to installing the newest driver:

Code:

sudo apt install build-essential dkms

You can also check the following article: https://support.displaylink.com/know...on-ubuntu-20-0

Please give that a try and let me know if it helped.

Best regards,
Katarzyna

That generated the following:

dpkg: error processing archive xserver-xorg-core_1.20.8-2ubuntu2_amd64.deb (--install):
conflicting packages - not installing xserver-xorg-core
Errors were encountered while processing:
xserver-xorg-core_1.20.8-2ubuntu2_amd64.deb

Solution provided here:

https://forums.linuxmint.com/viewtopic.php?t=322361

...was to upgrade to Ubuntu 20.04, which is not a viable option for me at this juncture.

The following was recommended:

Quote:

Originally Posted by schMick (Post 90501)

Does not function.

I don't see any other recent mention on this forum for a resolution for 18.04, hence checking to see the status of this.