Dell D3100, XPS 13 dev. edition / Gentoo Linux

[mlukaszek]

This does not look right:

[ 112.616091] DMAR: Allocating domain for evdi.0 failed

Not sure what could be causing this exactly. Have you compiled your kernel with CONFIG_INTEL_IOMMU (a bit of a blind shot to be honest, but it's the first time I see something like this logged)?

Thanks,
Michal

[jb999]

Originally Posted by mlukaszek

This does not look right:

[ 112.616091] DMAR: Allocating domain for evdi.0 failed

Not sure what could be causing this exactly. Have you compiled your kernel with CONFIG_INTEL_IOMMU (a bit of a blind shot to be honest, but it's the first time I see something like this logged)?

Hi again,

your "blind shot" was right, after recompiling without IOMMU support it works...
Ill get a check for that flag added to the ebuild that is arround so it checks wheter the kernel has IOMMU support enabled and asks to disable it.

thanks and regards,
Jan

[YuZhang]

Hi,
With iommu enabled, is there any way to make the USB3.0 to HDMI converter work?
I meet the similar issue with intel_iommu=on. The extended monitor connecting to DVI-I-1-1 shows nothing but a black screen.

Thanks.
Yu Zhang

[geostar1024]

Originally Posted by mlukaszek

This does not look right:

[ 112.616091] DMAR: Allocating domain for evdi.0 failed

Not sure what could be causing this exactly. Have you compiled your kernel with CONFIG_INTEL_IOMMU (a bit of a blind shot to be honest, but it's the first time I see something like this logged)?

Thanks,
Michal

Any chance iommu support could simply be removed from the driver so that we don't have to disable iommu for the kernel? Note that currently it's impossible to use a DisplayLink adapter on a system that is passing through devices to VMs.