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Re: MT76x2U crashes XHCI driver on AMD Ryzen system

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To: Rosen Penev <rosenp@xxxxxxxxx>
Subject: Re: MT76x2U crashes XHCI driver on AMD Ryzen system
From: Lorenzo Bianconi <lorenzo.bianconi@xxxxxxxxxx>
Date: Sun, 13 Jan 2019 14:33:33 +0100
Cc: linux-wireless <linux-wireless@xxxxxxxxxxxxxxx>
In-reply-to: <83A1D243-9073-48D1-9F26-5A2581DCB829@gmail.com>
References: <CAKxU2N9o5WeUwFMUwwXKHaPj7R+oiSKV1c2n8RtXwGNZRtw5Sw@mail.gmail.com> <CAJ0CqmVNF83bWgc+LSQ3_i=zfp-sXC5Nf=nKfqB3SWa8r7sKdQ@mail.gmail.com> <83A1D243-9073-48D1-9F26-5A2581DCB829@gmail.com>

>
> Direct. No VM used. This is the only peripheral causing this issue.

Is the device connected to a usb3.0 port? If so, could you please try
to connect the dongle to a 2.0 one?
Could you please double check if IOMMU is enabled?

Regards,
Lorenzo

References:
- MT76x2U crashes XHCI driver on AMD Ryzen system
  - From: Rosen Penev
- Re: MT76x2U crashes XHCI driver on AMD Ryzen system
  - From: Lorenzo Bianconi
- Re: MT76x2U crashes XHCI driver on AMD Ryzen system
  - From: Rosen Penev

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