The following is the content of /etc/udev/rules.d/99-usb-serial.rules. As you can see the last two items relate to a mag reader and special keyboard. According to these rules the the mag reader should be ttyUSB3 and the keyboard ttyUSB4 but this morning the site called and said the keyboard and mag reader stopped working. When I checked the mag reader was ttyUSB5 and the keyboard ttyUSB6. So how can this be happening? Is there something wrong with how I configured the rules? Does the file have to have a particular name?
SUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="kt_lcd_mo_4x40", SYMLINK+="ttyUSB0"
SUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="kt_pmp_mnet_stat2", ATTRS{serial}=="FT640VEE", SYMLINK+="ttyUSB1"
SUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="kt_pmp_mnet_stat2", ATTRS{serial}=="FT5PWZOO", SYMLINK+="ttyUSB2"
SUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="kt_magr_idtech_sp", SYMLINK+="ttyUSB3"
SUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="kt_keyb_stern_4x11", SYMLINK+="ttyUSB4"
Here is the content of the /usr/lib/udev/rules.d/77-mm-usb-serial-adapters-greylist.rules What is its function?
# do not edit this file, it will be overwritten on update
ACTION!="add|change|move", GOTO="mm_usb_serial_adapters_greylist_end"
SUBSYSTEM!="usb", GOTO="mm_usb_serial_adapters_greylist_end"
ENV{DEVTYPE}!="usb_device", GOTO="mm_usb_serial_adapters_greylist_end"
# Belkin F5U183 Serial Adapter
ATTRS{idVendor}=="050d", ATTRS{idProduct}=="0103", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
# FTDI-based serial adapters
# FTDI does USB to serial converter ICs; and it's very likely that they'll
# never do modems themselves, so it should be safe to add a rule only based
# on the vendor Id.
ATTRS{idVendor}=="0403", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
# Devices using Microchip's VID
ATTRS{idVendor}=="04d8", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
# ATEN Intl UC-232A (Prolific)
ATTRS{idVendor}=="0557", ATTRS{idProduct}=="2008", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
# Prolific USB to Serial adapter
ATTRS{idVendor}=="067b", ATTRS{idProduct}=="2303", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
# Magic Control Technology Corp adapters
ATTRS{idVendor}=="0711", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
# Cygnal Integrated Products, Inc. CP210x
ATTRS{idVendor}=="10c4", ATTRS{idProduct}=="ea60", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
ATTRS{idVendor}=="10c4", ATTRS{idProduct}=="ea71", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
# QinHeng Electronics HL-340
ATTRS{idVendor}=="1a86", ATTRS{idProduct}=="7523", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
# Atmel Corp. LUFA USB to Serial Adapter Project (Arduino)
ATTRS{idVendor}=="03eb", ATTRS{idProduct}=="204b", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
# Netchip Technology, Inc. Linux-USB Serial Gadget (CDC ACM mode)
ATTRS{idVendor}=="0525", ATTRS{idProduct}=="a4a7", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
# Cypress Serial-USB devices
ATTRS{idVendor}=="04B4", ATTRS{idProduct}=="0002", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
ATTRS{idVendor}=="04B4", ATTRS{idProduct}=="0003", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
ATTRS{idVendor}=="04B4", ATTRS{idProduct}=="0004", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
ATTRS{idVendor}=="04B4", ATTRS{idProduct}=="0005", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
ATTRS{idVendor}=="04B4", ATTRS{idProduct}=="0006", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
ATTRS{idVendor}=="04B4", ATTRS{idProduct}=="0007", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
ATTRS{idVendor}=="04B4", ATTRS{idProduct}=="0009", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
ATTRS{idVendor}=="04B4", ATTRS{idProduct}=="000A", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
LABEL="mm_usb_serial_adapters_greylist_end"
