gbishop/fpreader.md

Created June 3, 2026 17:13

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Lenovo Carbon X1 with Debian 13.5 fingerprint reader after suspend

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fpreader.md

Make the fingerprint reader work after suspend

I tried many different hacks suggested by various chatbots to no avail. I finally found https://mike.it-loops.com/item/32 and adapted it to my system. I used lsusb to learn the vendor id and port for the fingerprint reader.

Bus 003 Device 008: ID 06cb:00fc Synaptics, Inc. Prometheus Fingerprint Reader

Then I created this file /etc/udev/hwdb.d/61-autosuspend-fingerprint-reader.hwdb

usb:v06CBp00FC
 ID_AUTOSUSPEND=1
 ID_PERSIST=1

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Make the fingerprint reader work after suspend