Disable IOMMU support for DisplayLink driver

geostar1024 · 05-31-2019, 10:41 PM

Having IOMMU on causes the DisplayLink driver to malfunction (turning it off allows all connected adapters to function normally). This is a simple request to disable IOMMU support in the driver so that linux systems that use virtualization can still use DisplayLink adapters on the host.

mlukaszek · 06-13-2019, 07:12 PM

Hi,

A pull request that should address this has recently been merged into the devel branch of evdi project.

https://github.com/DisplayLink/evdi/...a57ba3042b930f

Cheers,
Michal

rharrison · 07-06-2019, 02:36 PM

I don't think the commit is working. I build the driver from the devel branch and still had to disable iommu to get anything to work.

rharrison · 07-22-2019, 04:06 PM

The latest release of the driver does seem to be working. Perhaps there was an issue with the way I built from the devel branch.

geostar1024 · 02-01-2020, 07:23 PM

Quote:

Originally Posted by mlukaszek

Hi,

A pull request that should address this has recently been merged into the devel branch of evdi project.

https://github.com/DisplayLink/evdi/...a57ba3042b930f

Cheers,
Michal

Many thanks! 5.2.14 is playing very nicely with my IOMMU setup.

05-31-2019, 10:41 PM	#1
geostar1024 Junior Member Join Date: May 2019 Posts: 4	Disable IOMMU support for DisplayLink driver Having IOMMU on causes the DisplayLink driver to malfunction (turning it off allows all connected adapters to function normally). This is a simple request to disable IOMMU support in the driver so that linux systems that use virtualization can still use DisplayLink adapters on the host.

06-13-2019, 07:12 PM	#2
mlukaszek Senior Member Join Date: Feb 2010 Posts: 386	Hi, A pull request that should address this has recently been merged into the devel branch of evdi project. https://github.com/DisplayLink/evdi/...a57ba3042b930f Cheers, Michal

07-06-2019, 02:36 PM	#3
rharrison Junior Member Join Date: Mar 2019 Posts: 2	I don't think the commit is working. I build the driver from the devel branch and still had to disable iommu to get anything to work.

07-22-2019, 04:06 PM	#4
rharrison Junior Member Join Date: Mar 2019 Posts: 2	The latest release of the driver does seem to be working. Perhaps there was an issue with the way I built from the devel branch.