Arch Linux

Kurolox

Member

Registered: 2015-09-15

Posts: 36

Fingerprint reader doesn't work after sleep

Greetings!

Just to keep it quick, I'm having the same issue as this old post in the forums.

https://bbs.archlinux.org/viewtopic.php?id=219121

Since the link given in said thread is dead, and googling only leads me to similar issues without fixes, or outdated fixes that depend on pm-utils, I'm hoping to find a solution here.

Now, explaining the issue with my own words, the fingerprint reader works as expected before and after suspend. When it doesn't work is right when waking up, which is a problem, because I also have an i3lock systemd unit that launches at the same time, and it won't recognize the fingerprint reader, so you can only log in with the password.

Here's the systemd unit I'm using to launch i3lock.

[Unit]
Description=Lock the screen on resume from suspend
Before=sleep.target
Before=suspend.target

[Service]
User=kuro
Type=Forking
Environment=DISPLAY=:0
ExecStart=/usr/bin/i3lock

[Install]
WantedBy=sleep.target
WantedBy=suspend.target

I've tried to make it run after fprintd.service, but it didn't work. The laptop model is a Thinkpad T460, and the fingerprint reader is 138a:0017 Validity Sensors, Inc. Fingerprint Reader, but I believe the issue is related to fprint and it's interaction when suspending rather than the fingerprint model itself.

Kurolox

Member

Registered: 2015-09-15

Posts: 36

Re: Fingerprint reader doesn't work after sleep

Bump

sterium

Member

Registered: 2017-10-12

Posts: 2

Re: Fingerprint reader doesn't work after sleep

Same problem!

Kurolox

Member

Registered: 2015-09-15

Posts: 36

Re: Fingerprint reader doesn't work after sleep

Bump

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,196

Re: Fingerprint reader doesn't work after sleep

These are active forums and, if anyone were able to help, an answer would be forthcoming.   
Do *not* bump : https://wiki.archlinux.org/index.php/Co … ct#Bumping
Do *not* make "me to" posts : https://wiki.archlinux.org/index.php/Co … mpty_posts

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Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
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How to Ask Questions the Smart Way

Bonnee

Member

From: Italy

Registered: 2016-10-18

Posts: 4

Re: Fingerprint reader doesn't work after sleep

On which kernel are all of you? I have the problem only on linux-ck (both 4.12 and 4.13 don't work) but stock is fine

Kurolox

Member

Registered: 2015-09-15

Posts: 36

Re: Fingerprint reader doesn't work after sleep

~ » pacman -Qi linux  
Name            : linux
Version         : 4.13.8-1
Description     : The Linux kernel and modules
Architecture    : x86_64
URL             : https://www.kernel.org/
Licenses        : GPL2
Groups          : base
Provides        : None
Depends On      : coreutils  linux-firmware  kmod  mkinitcpio>=0.7
Optional Deps   : crda: to set the correct wireless channels of your country
Required By     : virtualbox-guest-modules-arch
Optional For    : None
Conflicts With  : None
Replaces        : None
Installed Size  : 92.71 MiB
Packager        : Tobias Powalowski <tpowa@archlinux.org>
Build Date      : Wed 18 Oct 2017 11:51:27 AM CEST
Install Date    : Mon 23 Oct 2017 05:49:36 PM CEST
Install Reason  : Explicitly installed
Install Script  : Yes
Validated By    : Signature

~ » uname -a  
Linux Horus 4.13.8-1-ARCH #1 SMP PREEMPT Wed Oct 18 11:49:44 CEST 2017 x86_64 GNU/Linux