systemd udev.conf 5 udev.conf Configuration for device event managing daemon /etc/udev/udev.conf systemd-udevd8 expects its main configuration file at /etc/udev/udev.conf. It consists of a set of variables allowing the user to override default udev values. All empty lines or lines beginning with '#' are ignored. The following variables can be set: udev_log The log level. Valid values are the numerical syslog priorities or their textual representations: err, info and debug. In addition, systemd-udevd can be configured by command line options and the kernel command line (see systemd-udevd8). systemd-udevd8, udev7, udevadm8