fprintd error: list_devices failed

Dalph · 2025-08-29 03:17:25

lsusb detects the fingerprint reader:
Bus 001 Device 006: ID 06cb:009a Synaptics, Inc. Metallica MIS Touch Fingerprint Reader

python validity is up and running:

sudo systemctl status python3-validity
● python3-validity.service - python-validity driver dbus service
Loaded: loaded (/usr/lib/systemd/system/python3-validity.service; enabled; preset: disabled)
Active: active (running) since Fri 2025-08-29 10:39:40 +08; 143ms ago
Invocation: 63e8ed8a609549a8b02551be720f9ac8
Main PID: 26138 (python3)
Tasks: 1 (limit: 18761)
Memory: 11.8M (peak: 11.8M)
CPU: 124ms
CGroup: /system.slice/python3-validity.service
└─26138 python3 /usr/lib/python-validity/dbus-service --debug

Aug 29 10:39:40 Name systemd[1]: python3-validity.service: Scheduled restart job, restart counter is at 39.
Aug 29 10:39:40 Name systemd[1]: Started python-validity driver dbus service.

when runnning fprintd-enroll it throws the error:

fprintd-enroll
list_devices failed:

output of dmesg | grep -i usb:

[ 0.022957] ACPI: SSDT 0x00000000CFFAF000 000678 (v02 LENOVO UsbCTabl 00001000 INTL 20160527)
[ 0.627800] ACPI: bus type USB registered
[ 0.627800] usbcore: registered new interface driver usbfs
[ 0.627800] usbcore: registered new interface driver hub
[ 0.627800] usbcore: registered new device driver usb
[ 1.011286] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 1
[ 1.013594] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 2
[ 1.013602] xhci_hcd 0000:00:14.0: Host supports USB 3.0 SuperSpeed
[ 1.013769] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.16
[ 1.013780] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.013785] usb usb1: Product: xHCI Host Controller
[ 1.013790] usb usb1: Manufacturer: Linux 6.16.3-arch1-1 xhci-hcd
[ 1.013794] usb usb1: SerialNumber: 0000:00:14.0
[ 1.014221] hub 1-0:1.0: USB hub found
[ 1.017936] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.16
[ 1.017946] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.017951] usb usb2: Product: xHCI Host Controller
[ 1.017956] usb usb2: Manufacturer: Linux 6.16.3-arch1-1 xhci-hcd
[ 1.017960] usb usb2: SerialNumber: 0000:00:14.0
[ 1.018253] hub 2-0:1.0: USB hub found
[ 1.020639] usbcore: registered new interface driver usbserial_generic
[ 1.020656] usbserial: USB Serial support registered for generic
[ 1.031651] usbcore: registered new interface driver usbhid
[ 1.031653] usbhid: USB HID core driver
[ 1.255197] usb 1-3: new full-speed USB device number 2 using xhci_hcd
[ 1.388600] usb 1-3: New USB device found, idVendor=058f, idProduct=9540, bcdDevice= 1.20
[ 1.388606] usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 1.388609] usb 1-3: Product: EMV Smartcard Reader
[ 1.388611] usb 1-3: Manufacturer: Generic
[ 1.493380] usb 2-3: new SuperSpeed USB device number 2 using xhci_hcd
[ 1.515625] usb 2-3: New USB device found, idVendor=0bda, idProduct=0316, bcdDevice= 2.04
[ 1.515628] usb 2-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1.515629] usb 2-3: Product: USB3.0-CRW
[ 1.515631] usb 2-3: Manufacturer: Generic
[ 1.515632] usb 2-3: SerialNumber: 20120501030900000
[ 1.528981] usb-storage 2-3:1.0: USB Mass Storage device detected
[ 1.529126] scsi host0: usb-storage 2-3:1.0
[ 1.529201] usbcore: registered new interface driver usb-storage
[ 1.619204] usb 1-7: new full-speed USB device number 3 using xhci_hcd
[ 1.743495] usb 1-7: New USB device found, idVendor=8087, idProduct=0a2b, bcdDevice= 0.10
[ 1.743498] usb 1-7: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 1.857215] usb 1-8: new high-speed USB device number 4 using xhci_hcd
[ 1.985656] usbcore: registered new interface driver uas
[ 1.991998] usb 1-8: New USB device found, idVendor=5986, idProduct=2113, bcdDevice=54.22
[ 1.992001] usb 1-8: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 1.992003] usb 1-8: Product: Integrated Camera
[ 1.992004] usb 1-8: Manufacturer: SunplusIT Inc
[ 2.106301] usb 1-9: new full-speed USB device number 5 using xhci_hcd
[ 2.231741] usb 1-9: New USB device found, idVendor=06cb, idProduct=009a, bcdDevice= 1.64
[ 2.231753] usb 1-9: New USB device strings: Mfr=0, Product=0, SerialNumber=1
[ 2.231759] usb 1-9: SerialNumber: 8c25b486d48b
[ 22.651804] usbcore: registered new interface driver btusb
[ 22.784854] usb 1-8: Found UVC 1.00 device Integrated Camera (5986:2113)
[ 22.808761] usbcore: registered new interface driver uvcvideo
[ 6604.726700] usb 1-9: USB disconnect, device number 5
[ 6604.970928] usb 1-9: new full-speed USB device number 6 using xhci_hcd
[ 6605.096138] usb 1-9: New USB device found, idVendor=06cb, idProduct=009a, bcdDevice= 1.64
[ 6605.096143] usb 1-9: New USB device strings: Mfr=0, Product=0, SerialNumber=1
[ 6605.096146] usb 1-9: SerialNumber: 8c25b486d48b

ouput of systemctl list-units | grep -i fprint:

open-fprintd.service loaded active running Open FPrint Daemon

I have no idea what could be the problem. Any help is appreciated.

Sincerely,
Dalph

seth · 2025-08-29 08:07:18

Please use [code][/code] tags. Edit your post in this regard.
Then don't grep for random string, grep if you specifically know what you're looking for exactly, otherwise actually look at the context, journal, service status, command output.

For reference, the OP seems to be using https://aur.archlinux.org/packages/open-fprintd meaning they most likely found https://github.com/nmikhailov/Validity90/issues/34 (or asked chatgpt )

Sanity check: the dmesg covers at least 2h, did you reboot after switching to open-fprintd?
(Not sure whether and how it's supposed to shadow the default fprintd service, the packages don't conflict)

Arch Linux

#1 2025-08-29 03:17:25

fprintd error: list_devices failed

#2 2025-08-29 08:07:18

Re: fprintd error: list_devices failed

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