我不断收到/var/log/messages ：
4/7/2016, 11:03:49 AM fprintd[3277] Launching FprintObject 4/7/2016, 11:03:49 AM fprintd[3277] ** Message: D-Bus service launched with name: net.reactivated.Fprint 4/7/2016, 11:03:49 AM fprintd[3277] ** Message: entering main loop 4/7/2016, 11:04:20 AM fprintd[3277] ** Message: No devices in use, exit
在以下系统上：
$ cat /etc/redhat-release CentOS Linux release 7.2.1511 (Core) $ uname -a Linux X 3.10.0-327.13.1.el7.x86_64 #1 SMP Thu Mar 31 16:04:38 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux $
即使服务被禁用：
$ systemctl status fprintd ● fprintd.service - Fingerprint Authentication Daemon Loaded: loaded (/usr/lib/systemd/system/fprintd.service; static; vendor preset: disabled) Active: inactive (dead) Docs: man:fprintd(1) Apr 07 11:05:27 X fprintd[4871]: Launching FprintObject Apr 07 11:05:27 X fprintd[4871]: ** Message: D-Bus service launched with name: net.reactivated.Fprint Apr 07 11:05:27 X fprintd[4871]: ** Message: entering main loop Apr 07 11:05:58 X fprintd[4871]: ** Message: No devices in use, exit Apr 07 11:18:22 X systemd[1]: Starting Fingerprint Authentication Daemon... Apr 07 11:18:22 X systemd[1]: Started Fingerprint Authentication Daemon. Apr 07 11:18:22 X fprintd[7010]: Launching FprintObject Apr 07 11:18:22 X fprintd[7010]: ** Message: D-Bus service launched with name: net.reactivated.Fprint Apr 07 11:18:22 X fprintd[7010]: ** Message: entering main loop Apr 07 11:18:52 X fprintd[7010]: ** Message: No devices in use, exit $
我如何真正禁用，所以这不会显示在我的日志中呢？
$ systemctl status dbus ● dbus.service - D-Bus System Message Bus Loaded: loaded (/usr/lib/systemd/system/dbus.service; static; vendor preset: disabled) Active: active (running) since Thu 2016-04-07 11:03:16 EDT; 57min ago Main PID: 904 (dbus-daemon) CGroup: /system.slice/dbus.service └─904 /bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation Apr 07 11:14:35 X dbus[904]: [system] Successfully activated service 'org.freedesktop.hostname1' Apr 07 11:14:35 X dbus-daemon[904]: dbus[904]: [system] Successfully activated service 'org.freedesktop.hostname1' Apr 07 11:16:25 X dbus-daemon[904]: dbus[904]: [system] Activating service name='org.freedesktop.problems' (using servicehelper) Apr 07 11:16:25 X dbus[904]: [system] Activating service name='org.freedesktop.problems' (using servicehelper) Apr 07 11:16:25 X dbus[904]: [system] Successfully activated service 'org.freedesktop.problems' Apr 07 11:16:25 X dbus-daemon[904]: dbus[904]: [system] Successfully activated service 'org.freedesktop.problems' Apr 07 11:18:22 X dbus-daemon[904]: dbus[904]: [system] Activating via systemd: service name='net.reactivated.Fprint' unit='fprintd.service' Apr 07 11:18:22 X dbus[904]: [system] Activating via systemd: service name='net.reactivated.Fprint' unit='fprintd.service' Apr 07 11:18:22 X dbus[904]: [system] Successfully activated service 'net.reactivated.Fprint' Apr 07 11:18:22 X dbus-daemon[904]: dbus[904]: [system] Successfully activated service 'net.reactivated.Fprint' $
我在CentOS主板上问了同样的问题（ fprintd：**讯息：没有使用的设备，退出 – CentOS ），但没有得到答案。
这项服务不是“禁用的”，而是“静态的”。 这意味着它不能直接启动，而是由systemd响应某个事件启动。
由于此服务旨在驱动指纹识别器，因此很可能会在控制台login尝试期间触发它。
如果您没有指纹识别器，也不打算永久拥有指纹识别器，那么即使卸载并重新安装，即使依赖性要求，也可以屏蔽该服务 ，使其永远不会启动：
systemctl mask fprintd.service
这些消息（相对）是无害的，可以忽略，只要你有额外的几KB的磁盘空间来存储它们。 如果您打算将来有一台指纹识别器，您可能希望保持此服务不变，或者至less仔细logging您已经屏蔽了该服务，以便将来您仍然知道这一点。
我们通过卸载软件包fprintd-pam和fprintd来解决这个问题，同时注释了引用/etc/pam.d/fingerprint-auth和/etc/pam.d/gdm-fingerprint文件上的指纹的行。