Re: [BUG] Usb fingerprint sensor constantly resetting on MSI Prestige 16 Flip AI+ C3MTG

[Michal Pecio <michal.pecio@gmail.com>]

On Wed, 16 Sep 2026 21:17:30 +0800, EricLin wrote:
> I'm using fprint to operate this fingerprint sensor
> 
>     |__ Port 006: Dev 002, If 0, Class=Vendor Specific Class, Driver=[none], 12M
>         ID 27c6:6090 Shenzhen Goodix Technology Co.,Ltd.

This all sounds like some userspace driver is used.

And to me, this below looks like completely normal and successful USB2
device resume, followed by a reset initiated for unknown reason. 

[  240.364611] xhci_hcd 0000:00:14.0: clear USB_PORT_FEAT_SUSPEND
[  240.364612] xhci_hcd 0000:00:14.0: PORTSC 0663
# PLS is suspend, write resume
[  240.364616] xhci_hcd 0000:00:14.0: Set port 3-6 link state, portsc: 0x663, write 0x107e1
# PLS is resume, write U0
[  240.405029] xhci_hcd 0000:00:14.0: Set port 3-6 link state, portsc: 0x7e3, write 0x10601
[  240.405066] usb 3-6: usb auto-resume
# reached U0 state
[  240.405138] xhci_hcd 0000:00:14.0: Port change event, 3-6, id 6, portsc: 0x400603
[  240.405148] xhci_hcd 0000:00:14.0: handle_port_status: starting usb3 port polling.
[  240.446041] xhci_hcd 0000:00:14.0: Get port status 3-6 read: 0x603, return 0x40103
[  240.446119] xhci_hcd 0000:00:14.0: clear port6 suspend/resume change, portsc: 0x603
# this would be "finish reset-resume" if one was intended
# or "retry with reset-resume" if resume failed
# see drivers/usb/core/hub.c::finish_port_resume()
[  240.456987] usb 3-6: finish resume
[  240.457379] xhci_hcd 0000:00:14.0: set port reset, actual port 3-6 status  = 0x791

So maybe it's just the userspace software doing it for whatever reason
on every use. Guess you could run "strace -eioctl" on this program to
see if there is USBDEVFS_RESET each time the dmesg message shows up.

Or add dump_stack() in usb_reset_device(), recompile and see what pops
up. Probably ioctl syscall at the bottom of the call stack...

Regards,
Michal