Modem installation on GL-AR300M

Poccapx · 2018-08-16T10:59:59.768Z

After acquiring the great GL-AR300M router, i’m trying to get my 3G modem Option Globetrotter GI0505 to work with it. However, i always receive the Please plug in your modem message.

By running dmesg | grep usb it seems that it is detected only as a USB drive, and ls /dev/ doesn’t show any ttyUSB / -HSO devices. If usb-modeswitch is run with usbmode -l, it does say that there is a Found device: 0af0:d055 (Manufacturer: “Option Wireless Technology”, Product: “Globetrotter GI0505”, Serial: “Serial Number”), but the -s flag doesn’t seem to modeswitch anything. The modem is present in the usbmode.json file.

Help please, what is missing here?

Poccapx · 2018-08-20T10:14:41.445Z

So what could be the problem here? The modem is present in the usbmode.json file, but it is still not switching.

glitch · 2018-08-20T13:28:52.415Z

Have you tried it in a PC?

Poccapx · 2018-08-22T19:06:49.766Z

Yes, it works fine on my Linux PC. Which logs (or something more) can i provide to compare?

alzhao · 2018-08-24T09:14:01.051Z

Sorry I am not an expert on this.

ROOter firmware has good support of modems ROOter by Of Modems and Men
But there is no firmware for AR300M.

Poccapx · 2018-08-26T08:09:54.516Z

Aye, i also thought of Rooter, and even tried its firmware, but it doesn’t install. However, even if it would work, it’s an overkill – my modem is supported by usb-modeswitch and is working fine on big Linux, so it has to be possible to get it to work on Open WRT too.

On real usb-modeswitch logging can be enabled. I haven’t found a way to do so on the version of usb-modeswitch which is used by Open WRT. Here’s the log file from a Linux PC where the modem works fine:

USB_ModeSwitch log from Sun Aug 26 09:47:34 2018

Use global config file: /etc/usb_modeswitch.conf


Started via upstart
Raw args from udev: /1-1.2

Bus ID for device not given by udev.
 Trying to determine it from kernel name (1-1.2) ...
Use top device dir /sys/bus/usb/devices/1-1.2

USB dir exists: /sys/bus/usb/devices/1-1.2

SCSI dir exists: /sys/bus/usb/devices/1-1.2
Warning: SCSI attribute "vendor" not readable.
Warning: SCSI attribute "model" not readable.
Warning: SCSI attribute "rev" not readable.
Check class of first interface ...
 Device is in install mode.
Use interface (null)
----------------
USB values from sysfs:
  idVendor	0af0
  idProduct	d055
  manufacturer	Option Wireless Technology
  product	Globetrotter GI0505
  serial	Serial Number
  bNumConfigurations	1
  bConfigurationValue	1
  devnum	4
  busnum	1
----------------
bNumConfigurations is 1 - don't check for active configuration
Found packed config collection /usr/share/usb_modeswitch/configPack.tar.gz
Searching entries named: /usr/share/usb_modeswitch/0af0:d055*
Searching overriding entries named: /etc/usb_modeswitch.d/0af0:d055*
SCSI attributes not needed, move on.

Extract config 0af0:d055 from collection /usr/share/usb_modeswitch/configPack.tar.gz
config: TargetClass set to ff
config: NoDriverLoading is set to active
Driver will not be handled by usb_modeswitch
! matched, now switching
Unbinding driver
Command to be run:
/usr/sbin/usb_modeswitch -W -D -s 20 -c /run/usb_modeswitch/current_cfg -u -1 -b 1 -g 4 -v 0af0 -p d055 2>&1

Verbose debug output of usb_modeswitch and libusb follows
(Note that some USB errors are expected in the process)
--------------------------------

Read config file: /run/usb_modeswitch/current_cfg

 * usb_modeswitch: handle USB devices with multiple modes
 * Version 2.2.5 (C) Josua Dietze 2015
 * Based on libusb1/libusbx

 ! PLEASE REPORT NEW CONFIGURATIONS !

DefaultVendor=  0x0af0
DefaultProduct= 0xd055
TargetClass=    0xff
MessageContent="55534243785634120100000080000601000000000000000000000000000000"
NeedResponse=0
Success check enabled, max. wait time 20 seconds
System integration mode enabled

Use given bus/device number: 001/004 ...
Look for default devices ...
 bus/device number matched
  found USB ID 0af0:d055
   vendor ID matched
   product ID matched
   device class 08 not matching target
   count device
 Found devices in default mode (1)
Use interface number 0
Use endpoints 0x01 (out) and 0x81 (in)

USB description data (for identification)
-------------------------
Manufacturer: Option Wireless Technology
     Product: Globetrotter GI0505
  Serial No.: Serial Number
-------------------------
Looking for active driver ...
 OK, driver detached
Set up interface 0
Use endpoint 0x01 for message sending ...
Trying to send message 1 to endpoint 0x01 ...
 OK, message successfully sent
Reset response endpoint 0x81
 Could not reset endpoint (probably harmless): -99
Reset message endpoint 0x01
 Could not reset endpoint (probably harmless): -99
ok:busdev
--------------------------------
(end of usb_modeswitch output)
Check success of mode switch for max. 20 seconds ... Read attributes ...
USB dir exists: /sys/bus/usb/devices/1-1.2
Warning: USB attribute "serial" not readable.
 All attributes matched
Mode switching was successful, found 0af0:d055 (Option Wireless Technology: Globetrotter GI0505)Doing no driver check or bind for this device
Check for AVOID_RESET_QUIRK kernel attribute
 AVOID_RESET_QUIRK activated

All done, exit