Kubuntu 22.10下启用指纹解锁及PolicyKit认证失败求助

大家好，我在Kubuntu 22.10上碰到了指纹解锁的麻烦——明明已经注册了2个指纹，但它们既不显示在系统设置里，也完全没法用来解锁。想请教下有没有朋友遇到过类似情况，或者能给我点排查的方向？

设备信息 #

我用的是4代ThinkPad X1 Yoga，通过lsusb查到指纹识别器的详情如下：

Bus 001 Device 017: ID 06cb:00bd Synaptics, Inc. Prometheus MIS Touch Fingerprint Reader

Device Descriptor:
bLength                18
bDescriptorType         1
bcdUSB               2.00
bDeviceClass          255 Vendor Specific Class
bDeviceSubClass        16
bDeviceProtocol       255
bMaxPacketSize0         8
idVendor           0x06cb Synaptics, Inc.
idProduct          0x00bd Prometheus MIS Touch Fingerprint Reader
bcdDevice            0.00
iManufacturer           0
iProduct                0
iSerial                 1 2d92cfb68025
bNumConfigurations      1
Configuration Descriptor:
bLength                 9
bDescriptorType         2
wTotalLength       0x0027
bNumInterfaces          1
bConfigurationValue     1
iConfiguration          0
bmAttributes         0xa0
  (Bus Powered)
  Remote Wakeup
MaxPower              100mA
Interface Descriptor:
bLength                 9
bDescriptorType         4
bInterfaceNumber        0
bAlternateSetting       0
bNumEndpoints           3
bInterfaceClass       255 Vendor Specific Class
bInterfaceSubClass      0
bInterfaceProtocol      0
iInterface              0
Endpoint Descriptor:
bLength                 7
bDescriptorType         5
bEndpointAddress     0x01  EP 1 OUT
bmAttributes            2
  Transfer Type            Bulk
  Synch Type               None
  Usage Type               Data
wMaxPacketSize     0x0040  1x 64 bytes
bInterval               0
Endpoint Descriptor:
bLength                 7
bDescriptorType         5
bEndpointAddress     0x81  EP 1 IN
bmAttributes            2
  Transfer Type            Bulk
  Synch Type               None
  Usage Type               Data
wMaxPacketSize     0x0040  1x 64 bytes
bInterval               0
Endpoint Descriptor:
bLength                 7
bDescriptorType         5
bEndpointAddress     0x83  EP 3 IN
bmAttributes            3
  Transfer Type            Interrupt
  Synch Type               None
  Usage Type               Data
wMaxPacketSize     0x0008  1x 8 bytes
bInterval               4
Device Status:     0x0000
  (Bus Powered)

指纹存储目录状态 #

执行sudo ls -l /var/lib/fprint/$USER/后看到：

total 0
drwx------ 1 root root 24 Jan 30 22:52 synaptics

服务日志报错信息 #

查看journalctl -u fprintd.service的日志，发现了好几条认证相关的错误：

Jan 30 22:52:21 Kuroneko-ThinkPadX1Yoga4th systemd[1]: Starting Fingerprint Authentication Daemon...
Jan 30 22:52:22 Kuroneko-ThinkPadX1Yoga4th systemd[1]: Started Fingerprint Authentication Daemon.
Jan 30 22:52:25 Kuroneko-ThinkPadX1Yoga4th fprintd[104093]: Authorization denied to :1.1537 to call method 'Release' for device 'Synaptics Sensors': Device was not claimed before use
Jan 30 22:53:49 Kuroneko-ThinkPadX1Yoga4th fprintd[104093]: Authorization denied to :1.1537 to call method 'EnrollStop' for device 'Synaptics Sensors': Device was not claimed before use
Jan 30 22:53:49 Kuroneko-ThinkPadX1Yoga4th fprintd[104093]: Authorization denied to :1.1537 to call method 'Release' for device 'Synaptics Sensors': Device was not claimed before use
Jan 30 22:54:19 Kuroneko-ThinkPadX1Yoga4th systemd[1]: fprintd.service: Deactivated successfully.

目前我还没找到解决办法，希望有经验的朋友能帮忙分析下问题出在哪，或者该怎么调整配置？

备注：内容来源于stack exchange，提问作者YamiYukiSenpai