Hello,

I am facing a similar issue with a YubiKey 5C.

If you insert the Yubikey when prompted by the browser and then touch it, the login will fail. This was working with snapd 2.61.2. The Yubikey must be plugged-in before launching the browser otherwise the login will fail.

From my testing, this happen only with snapd 2.62 with browsers installed via snap (tested with Firefox and Chromium). Reverting to 2.61.2 fixes this issue.

Here are my logs:

Apr 22 10:33:06 ubuntu kernel: usb 1-2: new full-speed USB device number 8 using ohci-pci
Apr 22 10:33:07 ubuntu kernel: usb 1-2: New USB device found, idVendor=1050, idProduct=0407, bcdDevice= 5.27
Apr 22 10:33:07 ubuntu kernel: usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Apr 22 10:33:07 ubuntu kernel: usb 1-2: Product: YubiKey OTP+FIDO+CCID
Apr 22 10:33:07 ubuntu kernel: usb 1-2: Manufacturer: Yubico
Apr 22 10:33:07 ubuntu kernel: input: Yubico YubiKey OTP+FIDO+CCID as /devices/pci0000:00/0000:00:06.0/usb1/1-2/1-2:1.0/0003:1050:0407.000C/input/input13
Apr 22 10:33:07 ubuntu kernel: hid-generic 0003:1050:0407.000C: input,hidraw1: USB HID v1.10 Keyboard [Yubico YubiKey OTP+FIDO+CCID] on usb-0000:00:06.0-2/input0
Apr 22 10:33:07 ubuntu kernel: hid-generic 0003:1050:0407.000D: hiddev0,hidraw2: USB HID v1.10 Device [Yubico YubiKey OTP+FIDO+CCID] on usb-0000:00:06.0-2/input1
Apr 22 10:33:07 ubuntu mtp-probe[14219]: checking bus 1, device 8: "/sys/devices/pci0000:00/0000:00:06.0/usb1/1-2"
Apr 22 10:33:07 ubuntu mtp-probe[14219]: bus: 1, device: 8 was not an MTP device
Apr 22 10:33:07 ubuntu (udev-worker)[14217]: 1-2: Process '/usr/lib/snapd/snap-device-helper snap_cups_cupsd' failed with exit code 1.
Apr 22 10:33:07 ubuntu (udev-worker)[14217]: 1-2: Process '/usr/lib/snapd/snap-device-helper snap_cups_ippeveprinter' failed with exit code 1.
Apr 22 10:33:07 ubuntu systemd[1]: Reached target smartcard.target - Smart Card.
Apr 22 10:33:07 ubuntu systemd[1136]: Reached target smartcard.target - Smart Card.
Apr 22 10:33:07 ubuntu (udev-worker)[14217]: 1-2:1.0: Process '/usr/lib/snapd/snap-device-helper snap_cups_cupsd' failed with exit code 1.
Apr 22 10:33:07 ubuntu (udev-worker)[14218]: 1-2:1.1: Process '/usr/lib/snapd/snap-device-helper snap_cups_cupsd' failed with exit code 1.
Apr 22 10:33:07 ubuntu (udev-worker)[14217]: 1-2:1.0: Process '/usr/lib/snapd/snap-device-helper snap_cups_ippeveprinter' failed with exit code 1.
Apr 22 10:33:07 ubuntu (udev-worker)[14224]: 1-2:1.2: Process '/usr/lib/snapd/snap-device-helper snap_cups_cupsd' failed with exit code 1.
Apr 22 10:33:07 ubuntu (udev-worker)[14224]: 1-2:1.2: Process '/usr/lib/snapd/snap-device-helper snap_cups_ippeveprinter' failed with exit code 1.
Apr 22 10:33:07 ubuntu (udev-worker)[14218]: 1-2:1.1: Process '/usr/lib/snapd/snap-device-helper snap_cups_ippeveprinter' failed with exit code 1.
Apr 22 10:33:07 ubuntu (udev-worker)[14218]: hidraw2: Process '/usr/lib/snapd/snap-device-helper snap_firefox_firefox' failed with exit code 1.
Apr 22 10:33:07 ubuntu (udev-worker)[14234]: hidraw1: Process '/usr/lib/snapd/snap-device-helper snap_firefox_firefox' failed with exit code 1.
Apr 22 10:33:07 ubuntu (udev-worker)[14218]: hidraw2: Process '/usr/lib/snapd/snap-device-helper snap_firefox_geckodriver' failed with exit code 1.
Apr 22 10:33:07 ubuntu (udev-worker)[14234]: hidraw1: Process '/usr/lib/snapd/snap-device-helper snap_firefox_geckodriver' failed with exit code 1.
Apr 22 10:33:07 ubuntu (udev-worker)[14240]: hiddev0: Process '/usr/lib/snapd/snap-device-helper snap_cups_cupsd' failed with exit code 1.
Apr 22 10:33:07 ubuntu (udev-worker)[14240]: hiddev0: Process '/usr/lib/snapd/snap-device-helper snap_cups_ippeveprinter' failed with exit code 1.
Apr 22 10:33:07 ubuntu (udev-worker)[14217]: 1-2:1.1: Process '/usr/lib/snapd/snap-device-helper snap_cups_cupsd' failed with exit code 1.
Apr 22 10:33:07 ubuntu (udev-worker)[14217]: 1-2:1.1: Process '/usr/lib/snapd/snap-device-helper snap_cups_ippeveprinter' failed with exit code 1.
Apr 22 10:33:07 ubuntu (udev-worker)[14237]: 1-2:1.0: Process '/usr/lib/snapd/snap-device-helper snap_cups_cupsd' failed with exit code 1.
Apr 22 10:33:07 ubuntu (udev-worker)[14237]: 1-2:1.0: Process '/usr/lib/snapd/snap-device-helper snap_cups_ippeveprinter' failed with exit code 1.
Apr 22 10:33:07 ubuntu mtp-probe[14261]: checking bus 1, device 8: "/sys/devices/pci0000:00/0000:00:06.0/usb1/1-2"
Apr 22 10:33:07 ubuntu mtp-probe[14261]: bus: 1, device: 8 was not an MTP device
Apr 22 10:33:07 ubuntu (udev-worker)[14237]: 1-2: Process '/usr/lib/snapd/snap-device-helper snap_cups_cupsd' failed with exit code 1.
Apr 22 10:33:07 ubuntu (udev-worker)[14237]: 1-2: Process '/usr/lib/snapd/snap-device-helper snap_cups_ippeveprinter' failed with exit code 1.

I am running Ubuntu 23.10, kernel 6.5.0-27-generic