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Re: MT76x2U crashes XHCI driver on AMD Ryzen system

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>
> I have an ALFA AWUS036ACM and whenever I plug it in, the XHCI driver
> dies. This is on an ASRock X370 motherboard. Kernel 4.20 Arch Linux.
>
> After plugging in the adapter, the integrated wireless chip (Intel
> 3168) also dies. Disabling the motherboard wireless does not help.
> Here are two fairly similar logs. First with Intel 3168 and the second
> with it disabled in UEFI.
>

[...]

> Without iwlwifi:
>
> kernel: usb 1-14: new high-speed USB device number 3 using xhci_hcd
> kernel: usb 1-14: New USB device found, idVendor=0e8d, idProduct=7612,
> bcdDevice= 1.00
> kernel: usb 1-14: New USB device strings: Mfr=2, Product=3, SerialNumber=4
> usb 1-14: Product: Wireless
> kernel: usb 1-14: Manufacturer: MediaTek Inc.
> kernel: usb 1-14: SerialNumber: 000000000
> mtp-probe[1400]: checking bus 1, device 3:
> "/sys/devices/pci0000:00/0000:00:01.3/0000:03:00.0/usb1/1-14"
> mtp-probe[1400]: bus: 1, device: 3 was not an MTP device
> kernel: usb 1-14: reset high-speed USB device number 3 using xhci_hcd
> kernel: mt76x2u 1-14:1.0: ASIC revision: 76120044
> kernel: mt76x2u 1-14:1.0: ROM patch build: 20140408060640a
> kernel: xhci_hcd 0000:03:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT

Are you using the driver in a VM or directly in the host? This is an
error reported by AMD iommu driver

Regards,
Lorenzo



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