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View Full Version : 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/commit/74e289906dba95c0ad3208cfa6a57ba3042b930f

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
Hi,

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

https://github.com/DisplayLink/evdi/commit/74e289906dba95c0ad3208cfa6a57ba3042b930f

Cheers,
Michal

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