DisplayLink 3100 / Ubuntu 16.04

[dougvanhorn]

Unable to get a monitor recognized through the DisplayLink device.

Behavior: I plug the monitor into the DisplayLink. Mouse & Keyboard operate fine, Display is not recognized.

I plug the monitor into the Laptop HDMI, Display is recognized and works fine.


D3100
XPS 15 Non-Touch
Ubuntu 16.04 LTS
Linux 4.4.0-22-generic #40-Ubuntu SMP Thu May 12 22:03:46 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
Nvidia 364.19

$ lsmod |grep evdi
evdi 40960 1
drm_kms_helper 139264 3 evdi,i915_bpo,nvidia_drm
syscopyarea 16384 2 evdi,drm_kms_helper
sysfillrect 16384 2 evdi,drm_kms_helper
sysimgblt 16384 2 evdi,drm_kms_helper
drm 360448 12 evdi,i915_bpo,drm_kms_helper,nvidia_drm

$ sudo service displaylink status
● displaylink.service - DisplayLink Manager Service
Loaded: loaded (/lib/systemd/system/displaylink.service; enabled; vendor preset: enabled)
Active: active (running) since Mon 2016-05-16 15:19:36 CDT; 26min ago
Process: 1314 ExecStartPre=/sbin/modprobe evdi (code=exited, status=0/SUCCESS)
Main PID: 1423 (DisplayLinkMana)
Tasks: 34 (limit: 512)
CGroup: /system.slice/displaylink.service
└─1423 /usr/lib/displaylink/DisplayLinkManager

May 16 15:19:36 carbon systemd[1]: Starting DisplayLink Manager Service...
May 16 15:19:36 carbon systemd[1]: Started DisplayLink Manager Service.



I'm unsure of how to provide additional debugging. I can attach the /var/log/displaylink logs if you like.

[mlukaszek]

Looks like you're using a proprietary driver for your NVIDIA card. This is unfortunately not a supported configuration, but you may try to force "power saving mode" - let me know if this helps.

Logs can be gathered using a Linux Support Tool - see http://support.displaylink.com/knowledgebase/articles/757047-how-can-i-report-ubuntu-issues-to-displaylink

Thanks,
Michal

[djtecha]

Is there any ETA on when this will support these proprietary drivers? Kind of a shame to not be able to use the better GPU here.

[mlukaszek]

You can try to enable KMS for NVIDIA proprietary driver, making it compatible with modesetting. AFAIK this is not the default. Let us know if it works.

Cheers,
Michal