Recently, I got an error message with respect to the udev rule of my garmin GPS device:
udevd[133]: unknown key 'SYSFS{idVendor}' in /etc/udev/rules.d/51-garmin.rules:1
In a French forum (http://www.planet-libre.org/index.php?post_id=10937) I found a solution that might also be of interest to others. Apparently, the syntax of the udev rules has to be changed:
text
cd /etc/udev/rules.d
sed -i -e s/SYSFS/ATTR/g *.rules
SYSFS{}= will be removed in a future udev version, please use ATTR{}= to match the event device, or ATTRS{}= to match a parent device, in /lib/udev/rules.d