On my linux box (uname -a Linux gate 3.2.0-0.bpo.2-amd64 #1 SMP Fri Jun 29 20:42:29 UTC 2012 x86_64 GNU/Linux) I've got USB modem WeTelecom WM-D300 that has "zeroCD" option. ZeroCD USB id for it is 22de:6803, and modem device has 22de:6801 usb id. I've created usb_modeswitch rule for it and tested that this rule is working well:
Aug 11 23:03:14 gate kernel: [ 609.832373] usb 1-1: usbfs: process 6081 (usb_modeswitch) did not claim interface 0 before use
Aug 11 23:03:14 gate kernel: [ 609.949352] usb 1-1: USB disconnect, device number 2
Aug 11 23:03:15 gate kernel: [ 610.596344] usb 1-1: new high-speed USB device number 5 using ehci_hcd
Aug 11 23:03:15 gate kernel: [ 610.759964] usb 1-1: New USB device found, idVendor=22de, idProduct=6801
Aug 11 23:03:15 gate kernel: [ 610.759978] usb 1-1: New USB device strings: Mfr=3, Product=2, SerialNumber=0
Aug 11 23:03:15 gate kernel: [ 610.759987] usb 1-1: Product: Wetelecom Mobile Products
Aug 11 23:03:15 gate kernel: [ 610.759994] usb 1-1: Manufacturer: WeTelecom Incorporated
Aug 11 23:03:16 gate kernel: [ 611.820404] option 1-1:1.0: GSM modem (1-port) converter detected
Aug 11 23:03:16 gate kernel: [ 611.820760] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB3
Aug 11 23:03:16 gate kernel: [ 611.820876] option 1-1:1.1: GSM modem (1-port) converter detected
Aug 11 23:03:16 gate kernel: [ 611.821095] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB4
Aug 11 23:03:16 gate kernel: [ 611.821204] option 1-1:1.2: GSM modem (1-port) converter detected
Aug 11 23:03:16 gate kernel: [ 611.821418] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB5
So, I made a small udev config to allow automatic hotplugging for this device:
ACTION!="add|change", GOTO="modem_rules_end"
SUBSYSTEM!="usb", GOTO="modem_rules_end"
LABEL="modem_rules_begin"
# WeTelecom WM-D300
ATTRS{idVendor}=="22de", ATTRS{idProduct}=="6803", RUN+="usb_modeswitch '%b/%k'"
LABEL="modem_rules_end"
And it's not working. After I reconnect the modem, it becomes completely unavailable. usb-devices shows that it has usbfs driver and usb_modeswitch cannot switch it even from command line. udev failed to switch as well but after reboot it works just fine - till the next physical reconnect. Here's the udev log when I plug the modem in:
Aug 11 22:42:11 gate logger: usb_modeswitch: using overriding config file /etc/usb_modeswitch.d/22de:6803; make sure this is intended
Aug 11 22:42:11 gate logger: usb_modeswitch: please report any new or corrected settings; otherwise, check for outdated files
Aug 11 22:42:11 gate logger: usb_modeswitch: using overriding config file /etc/usb_modeswitch.d/22de:6803; make sure this is intended
Aug 11 22:42:11 gate logger: usb_modeswitch: please report any new or corrected settings; otherwise, check for outdated files
Aug 11 22:42:11 gate usb_modeswitch: switching device 22de:6803 on 001/006
Aug 11 22:42:11 gate usb_modeswitch: switching device 22de:6803 on 001/006
Aug 11 22:42:11 gate kernel: [ 1495.864235] usb 1-1: usbfs: process 8485 (usb_modeswitch) did not claim interface 0 before use
Aug 11 22:42:11 gate kernel: [ 1495.864309] usb 1-1: usbfs: process 8485 (usb_modeswitch) did not claim interface 0 before use
Aug 11 22:42:16 gate logger: usb_modeswitch: switched to 22de:6803 on 001/006
Aug 11 22:42:19 gate logger: usb_modeswitch: switched to 22de:6803 on 001/006
So, my question is: why and how? Why it's working from command line and how to make it working by udev? Please help. Thanx in advance!
