Dell D3100, XPS 13 dev. edition / Gentoo Linux

[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