Hey, so I am accually running Zorin 18 beta for this now (Zorin 17 never even found the fingerprint module) but other wise think its a more general issue. So whenever I save my fingerprint and then lock the device and try to use it- it gets deleted... not sure why but went though the logs and found this:
`ct 04 12:09:50 samgo-galaxy-book fprintd[4807]: Device reported an error during identify: Print was not found on the devices storage.
Oct 04 12:09:50 samgo-galaxy-book fprintd[4807]: Deleted stored finger 4 for user sam as it is unknown to device.
Oct 04 12:09:50 samgo-galaxy-book fprintd[4807]: Deleted stored finger 1 for user samgo as it is unknown to device.
Oct 04 12:10:23 samgo-galaxy-book fprintd[4807]: Authorization denied to :1.85 to call method 'EnrollStart' for device 'Egis Technology (LighTuning) Match-on-Chip': Not Authorized: net.reactivated.fprint.device.enroll
Oct 04 12:11:02 samgo-galaxy-book fprintd[4807]: Device reported an error during verify: Print was not found on the devices storage.
Oct 04 12:11:02 sam-galaxy-book fprintd[4807]: Device Egis Technology (LighTuning) Match-on-Chip reported that a passed print did not exist during action 2, but we verified the local storage!
Oct 04 12:11:02 samgo-galaxy-book fprintd[4807]: Deleted stored finger 9 for user samgo as it is unknown to device.
Oct 04 12:11:48 samgo-galaxy-book fprintd[4807]: Authorization denied to :1.142 to call method 'Claim' for device 'Egis Technology (LighTuning) Match-on-Chip': Device was already claimed
Oct 04 12:14:22 samgo-galaxy-book fprintd[4807]: Authorization denied to :1.146 to call method 'Claim' for device 'Egis Technology (LighTuning) Match-on-Chip': Device was already claimed
Oct 04 12:14:22 samgo-galaxy-book fprintd[4807]: Authorization denied to :1.147 to call method 'Claim' for device 'Egis Technology (LighTuning) Match-on-Chip': Device was already claimed
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Loveing Zorin 18 Beta so far!
" The error "Authorization denied to .142 to call method 'Claim' for device 'Egis Technology (LighTuning) Match-on-Chip': Device was already claimed" indicates that the fingerprint device is currently in use by another process or user session, preventing the current request from claiming it. This is a common issue in Linux systems using the fprintd daemon for fingerprint authentication, where only one process can claim a device at a time. The error can occur if another application or the system daemon has already claimed the device, or if there is a conflict between user sessions or background processes.
To resolve this, you can try stopping the fprintd service to release any existing claims:
sudo service fprintd stop
After stopping the service, attempt to claim the device again. If the issue persists, ensure no other fingerprint-related processes are running, such as those launched by the desktop environment (e.g., GNOME or KDE). Additionally, check for any pending system updates or known bugs related to fprintd and gnome-shell , as this specific error has been reported and fixed in newer versions of Ubuntu (e.g., in the "plucky" release). If the device is claimed by a different user session, logging out and back in, or restarting the system, may also resolve the conflict.
Does Your System run in Wayland or X11? You can check that in Settings>About. When it runs in Wayland, you could try it with swtiching to X11/Xorg.
To do that, go to the Login Screen, not the Lock Screen. Simply reboot for that. On the Login Screen, click on Your Profile so that the Password Field appears. When it is appeared, You should see in the bottom right Corner a Gear Icon. Click on it and choose the Option ''Zorin Desktop on Xorg'' and then log in.
Did You looked if the Manufacturer offers any Drivers? And is Your Machine an old one or a new one? When it is a relatively new one, it could be that You need a newer Kernel.
No I just realised, I found the wiki of which drivers work on Samsung Books and it shows that linux dosent support the fingerprint driver... then how is it working rn? Honestly idk im still kinda unexperianced in linux.
RIght when i entered verify it just desited to make no-match, i didnt even touch it. Logs just say it dosent know it
Oct 07 13:12:51 sam-galaxy-book fprintd[6568]: Device reported an error during verify: Print was not found on the devices storage.
Oct 07 13:12:51 sam-galaxy-book fprintd[6568]: Deleted stored finger 7 for user sam as it is unknown to device.
Oct 07 13:14:01 sam-galaxy-book polkitd[911]: Operator of unix-session:2 successfully authenticated as unix-user:sam to gain TEMPORARY authorization for action net.reactivated.fprint.device.enroll for system-bus-name::1.170 [fprintd-enroll] (owned by unix-user:sam)
Oct 07 13:14:16 sam-galaxy-book polkitd[911]: Operator of unix-session:2 successfully authenticated as unix-user:sam to gain TEMPORARY authorization for action net.reactivated.fprint.device.enroll for system-bus-name::1.173 [fprintd-enroll] (owned by unix-user:sam)
Oct 07 13:14:40 sam-galaxy-book fprintd[6568]: Device reported an error during verify: Print was not found on the devices storage.
Oct 07 13:14:40 sam-galaxy-book fprintd[6568]: Device Egis Technology (LighTuning) Match-on-Chip reported that a passed print did not exist during action 2, but we verified the local storage!
Oct 07 13:14:40 sam-galaxy-book fprintd[6568]: Deleted stored finger 7 for user sam as it is unknown to device.
When it isn't supported ... then it will not work (properly). You could try it with a newer Kernel wich maybe supports Your Device ... but that is only a Guess.