Re: [regression] usb and thunderbould are misbehaving or broken due to iommu/vt-d change

From: Baolu Lu
Date: Sun Sep 01 2024 - 05:12:25 EST


On 2024/8/30 8:29, Tian, Kevin wrote:
From: Markus Rathgeb<maggu2810@xxxxxxxxx>
Sent: Thursday, August 29, 2024 4:34 PM

With respect to my previous comment I tested to fix it myself (I am
not a kernel hacker and do not know anything about iommu etc.).

After applying the following change to the v6.11-rc5 it seems to fix my
problem.
I can connect, disconnect and connect the dock and USB is working and
no DMAR error.

as said there was already a fix posted which is similar to below:

https://lore.kernel.org/linux-iommu/20240815124857.70038-1-baolu.lu@xxxxxxxxxxxxxxx/

Above patch has been merged in v6.11-rc6. Please try the latest kernel
version.

Thanks,
baolu