As I've previously mentioned, I am trying to get a Novatel EVDO modem to work
consistently on a particular laptop. Sometimes it works, mostly it doesn't.
After much experimentation I have discovered that it apparently takes
about five minutes for the machine to realize that it has a modem, after which
it works.
See this from /var/log/messages on one of my computers:
Nov 26 12:20:09 mutt kernel: usb 7-2: new full speed USB device using
uhci_hcd and address 2
Nov 26 12:20:09 mutt kernel: usb 7-2: configuration #1 chosen from 1 choice
Nov 26 12:20:09 mutt kernel: usb 7-2: New USB device found, idVendor=1410,
idProduct=5010
Nov 26 12:20:09 mutt kernel: usb 7-2: New USB device strings: Mfr=1, Product=2,
SerialNumber=4
Nov 26 12:20:09 mutt kernel: usb 7-2: Product: Novatel Wireless CDMA
Nov 26 12:20:09 mutt kernel: usb 7-2: Manufacturer: Novatel Wireless Inc.
Nov 26 12:20:09 mutt kernel: usb 7-2: SerialNumber: 091087439150000
Nov 26 12:20:10 mutt kernel: Initializing USB Mass Storage driver...
Nov 26 12:20:10 mutt kernel: scsi6 : SCSI emulation for USB Mass Storage devices
Nov 26 12:20:10 mutt kernel: usbcore: registered new interface driver usb-storage
Nov 26 12:20:10 mutt kernel: USB Mass Storage support registered.
Nov 26 12:20:15 mutt kernel: scsi 6:0:0:0: CD-ROM Novatel Mass Storage
1.00 PQ: 0 ANSI: 2
Nov 26 12:20:15 mutt kernel: sr1: scsi-1 drive
Nov 26 12:20:15 mutt kernel: sr 6:0:0:0: Attached scsi generic sg2 type 5
Nov 26 12:20:16 mutt kernel: sr1: CDROM (ioctl) error, command: Get configuration 46 00
00 00 00 00 00 00 20 00
Nov 26 12:20:16 mutt kernel: sr: Sense Key : No Sense [current]
Nov 26 12:20:16 mutt kernel: sr: Add. Sense: No additional sense information
Nov 26 12:20:17 mutt kernel: sr1: CDROM (ioctl) error, command: Get configuration 46 00
00 00 00 00 00 00 20 00
Nov 26 12:20:17 mutt kernel: sr: Sense Key : No Sense [current]
Nov 26 12:20:17 mutt kernel: sr: Add. Sense: No additional sense information
Nov 26 12:20:17 mutt kernel: sr1: CDROM (ioctl) error, command: Get configuration 46 00
00 28 00 00 00 00 10 00
Nov 26 12:20:17 mutt kernel: sr: Sense Key : No Sense [current]
Nov 26 12:20:17 mutt kernel: sr: Add. Sense: No additional sense information
Nov 26 12:20:17 mutt kernel: sr1: CDROM (ioctl) error, command: Get configuration 46 00
00 20 00 00 00 00 18 00
Nov 26 12:20:17 mutt kernel: sr: Sense Key : No Sense [current]
Nov 26 12:20:17 mutt kernel: sr: Add. Sense: No additional sense information
Nov 26 12:20:17 mutt kernel: sr1: CDROM (ioctl) error, command: Get configuration 46 00
00 00 00 00 00 00 20 00
Nov 26 12:20:17 mutt kernel: sr: Sense Key : No Sense [current]
Nov 26 12:20:17 mutt kernel: sr: Add. Sense: No additional sense information
Nov 26 12:20:17 mutt gnome-keyring-daemon[2986]: adding removable location:
volume_label_Novatel_Mobilink at /media/Novatel Mobilink
Nov 26 12:20:17 mutt hald: mounted /dev/sr1 on behalf of uid 500
Nov 26 12:23:23 mutt ntpd[2242]: kernel time sync status change 4001
Nov 26 12:26:53 mutt kernel: usb 7-2: USB disconnect, address 2
Nov 26 12:26:53 mutt hald[2073]: forcibly attempting to lazy unmount /dev/sr1 as
enclosing drive was disconnected
Nov 26 12:26:53 mutt kernel: scsi 6:0:0:0: rejecting I/O to dead device
Nov 26 12:26:53 mutt gnome-keyring-daemon[2986]: removing removable location:
volume_label_Novatel_Mobilink
Nov 26 12:26:53 mutt hald: unmounted /dev/sr1 from '/media/Novatel Mobilink' on
behalf of uid 0
Nov 26 12:26:54 mutt kernel: usb 7-2: new full speed USB device using uhci_hcd and
address 3
Nov 26 12:26:55 mutt kernel: usb 7-2: configuration #1 chosen from 1 choice
Nov 26 12:26:55 mutt kernel: scsi7 : SCSI emulation for USB Mass Storage devices
Nov 26 12:26:55 mutt kernel: usb 7-2: New USB device found, idVendor=1410,
idProduct=4100
Nov 26 12:26:55 mutt kernel: usb 7-2: New USB device strings: Mfr=1, Product=2,
SerialNumber=4
Nov 26 12:26:55 mutt kernel: usb 7-2: Product: Novatel Wireless CDMA
Nov 26 12:26:55 mutt kernel: usb 7-2: Manufacturer: Novatel Wireless Inc.
Nov 26 12:26:55 mutt kernel: usb 7-2: SerialNumber: 091087439151000
Nov 26 12:26:55 mutt kernel: usbcore: registered new interface driver usbserial
Nov 26 12:26:55 mutt kernel: usbserial: USB Serial support registered for generic
Nov 26 12:26:55 mutt kernel: usbcore: registered new interface driver usbserial_generic
Nov 26 12:26:55 mutt kernel: usbserial: USB Serial Driver core
Nov 26 12:26:55 mutt kernel: usbserial: USB Serial support registered for GSM modem
(1-port)
Nov 26 12:26:55 mutt kernel: option 7-2:1.0: GSM modem (1-port) converter detected
Nov 26 12:26:55 mutt kernel: usb 7-2: GSM modem (1-port) converter now attached to
ttyUSB0
Nov 26 12:26:55 mutt kernel: option 7-2:1.1: GSM modem (1-port) converter detected
Nov 26 12:26:55 mutt kernel: usb 7-2: GSM modem (1-port) converter now attached to
ttyUSB1
Nov 26 12:26:55 mutt kernel: option 7-2:1.2: GSM modem (1-port) converter detected
Nov 26 12:26:55 mutt kernel: usb 7-2: GSM modem (1-port) converter now attached to
ttyUSB2
Nov 26 12:26:55 mutt kernel: option 7-2:1.3: GSM modem (1-port) converter detected
Nov 26 12:26:55 mutt kernel: usb 7-2: GSM modem (1-port) converter now attached to
ttyUSB3
Nov 26 12:26:55 mutt kernel: usbcore: registered new interface driver option
Nov 26 12:26:55 mutt kernel: option: USB Driver for GSM modems: v0.7.2
Nov 26 12:27:00 mutt kernel: scsi 7:0:0:0: Direct-Access Novatel MMC Storage
2.31 PQ: 0 ANSI: 2
Nov 26 12:27:00 mutt kernel: sd 7:0:0:0: [sdb] Attached SCSI removable disk
Nov 26 12:27:00 mutt kernel: sd 7:0:0:0: Attached scsi generic sg2 type 0
Nov 26 12:29:54 mutt kernel: usb 7-2: USB disconnect, address 3
Nov 26 12:29:54 mutt kernel: option1 ttyUSB0: GSM modem (1-port) converter now
disconnected from ttyUSB0
Nov 26 12:29:54 mutt kernel: option 7-2:1.0: device disconnected
Nov 26 12:29:54 mutt kernel: option1 ttyUSB1: GSM modem (1-port) converter now
disconnected from ttyUSB1
Nov 26 12:29:54 mutt kernel: option 7-2:1.1: device disconnected
Nov 26 12:29:54 mutt kernel: option1 ttyUSB2: GSM modem (1-port) converter now
disconnected from ttyUSB2
Nov 26 12:29:54 mutt kernel: option 7-2:1.2: device disconnected
Nov 26 12:29:54 mutt kernel: option1 ttyUSB3: GSM modem (1-port) converter now
disconnected from ttyUSB3
Nov 26 12:29:54 mutt kernel: option 7-2:1.3: device disconnected
As you can see, it took six minutes before the device somehow reset itself and
the machine realized that it had a modem attached.
What's going on here?
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