Go Back   DisplayLink Forum > DisplayLink Graphics Technology > Linux and Open Source

Thread Tools Search this Thread Display Modes
Old 09-20-2017, 12:47 PM   #1
Junior Member
Join Date: Sep 2017
Posts: 3
Post DisplayLink USB3.0 to HDMI converter doesn't work when intel_iommu is enabled

I don't know why I post new thread several times but I still can not find it in this forum. I just register this account. Do I have the permission to start a new thread?

I have a DisplayLink product, i.e., WAVLINK UG35H5, which is a multi-display HDMI adapter or a USB3.0 to HDMI converter.
I encounter a problem with this DisplayLink adapter.
I run Ubuntu16.04.1 on i3-6100U machine. I need to turn on intel_iommu, however, it seems as if DisplayLink is not compatible with intel_iommu. When intel_iommu is enabled (intel_iommu=on), the extended monitor plugging to DVI-I-1-1 doesn't work. It shows a black screen while the primary monitor plugging to onboard DP port displays in a bad status of very low resolution. Besides, everytime when intel_iommu is enabled, there appears an error message at the Ubuntu user-login interface, i.e., “Could not switch the monitor configuration could not set the configuration for CRTC 226”.
There is one similar thread on the forum pertaining to iommu. But the solution is not useful for me since I need to enable intel_iommu but not to disable it.
Could anyone tell me how can I use this DisplayLink adapter with intel_iommu enabled?
Attached are log files collected by DLSupportTool.

Yu Zhang
Attached Files
File Type: zip DisplayLink_2017-09-20T10%3A58%3A51.249506.zip (714.4 KB, 0 views)
YuZhang is offline   Reply With Quote

black screen, intel_iommu, low resolution, ubuntu16.04.1, usb3.0 to hdmi converter

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT. The time now is 05:26 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.