If a Linux system isn't booting anymore after the TRACE32 USB driver files 10-lauterbach.rules was installed, then please check, whether an irritating CR character is inside this file or not.
A check can be done with command:
cat -et /etc/udev/rules.d/10-lauterbach.rules
No ^M should be displayed at all.
In the directory /dev/lauterbach/trace32 you can find a lot of links from system devices which shouldn't exists there (e.g. audio, disk, dvd, ..)
# conversion steps
# if package tofrodos isn't already installed
sudo apt-get install tofrodos
# converts all CF+LF pairs to LF
sudo fromdos -d 10-lauterbach.rules