On Fri, 22 Jul 2011 00:37:49 +0200 Francesco Poli wrote: [...] > Would it be a useful test, if I tried to purge usb-modeswitch and then > plug the modem again to see if /dev/ttyUSB0 shows up (and what other > interfaces are exposed)?
I decided to perform the test. After purging usb-modeswitch and usb-modeswitch-data (and rebooting the box, just to be sure...), I plugged the Huawei E169 modem into a USB port. Here's what I saw in /var/log/syslog: kernel: [ 4786.724046] usb 7-2: new full speed USB device number 2 using uhci_hcd kernel: [ 4786.890095] usb 7-2: New USB device found, idVendor=12d1, idProduct=1001 kernel: [ 4786.890098] usb 7-2: New USB device strings: Mfr=1, Product=2, SerialNumber=1 kernel: [ 4786.890101] usb 7-2: Product: HUAWEI Mobile kernel: [ 4786.890103] usb 7-2: Manufacturer: ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ kernel: [ 4786.890105] usb 7-2: SerialNumber: ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ udevd[6056]: failed to execute '/lib/udev/mtp-probe' 'mtp-probe /sys/devices/pci0000:00/0000:00:1d.1/usb7/7-2 7 2': No such file or directory kernel: [ 4787.271523] usbcore: registered new interface driver uas kernel: [ 4787.297428] Initializing USB Mass Storage driver... kernel: [ 4787.299119] scsi4 : usb-storage 7-2:1.0 kernel: [ 4787.299287] usbcore: registered new interface driver usb-storage kernel: [ 4787.299290] USB Mass Storage support registered. kernel: [ 4787.740076] usb 7-2: USB disconnect, device number 2 kernel: [ 4788.036038] usb 7-2: new full speed USB device number 3 using uhci_hcd kernel: [ 4788.256090] usb 7-2: New USB device found, idVendor=12d1, idProduct=1001 kernel: [ 4788.256093] usb 7-2: New USB device strings: Mfr=1, Product=2, SerialNumber=1 kernel: [ 4788.256096] usb 7-2: Product: HUAWEI Mobile kernel: [ 4788.256098] usb 7-2: Manufacturer: ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ kernel: [ 4788.256100] usb 7-2: SerialNumber: ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ udevd[6069]: failed to execute '/lib/udev/mtp-probe' 'mtp-probe /sys/devices/pci0000:00/0000:00:1d.1/usb7/7-2 7 3': No such file or directory kernel: [ 4788.268412] scsi8 : usb-storage 7-2:1.3 kernel: [ 4788.349958] usbcore: registered new interface driver usbserial kernel: [ 4788.349976] USB Serial support registered for generic kernel: [ 4788.350491] usbcore: registered new interface driver usbserial_generic kernel: [ 4788.350494] usbserial: USB Serial Driver core kernel: [ 4788.374657] USB Serial support registered for GSM modem (1-port) kernel: [ 4788.375037] option 7-2:1.0: GSM modem (1-port) converter detected kernel: [ 4788.376294] usb 7-2: GSM modem (1-port) converter now attached to ttyUSB0 kernel: [ 4788.376317] option 7-2:1.1: GSM modem (1-port) converter detected kernel: [ 4788.377437] usb 7-2: GSM modem (1-port) converter now attached to ttyUSB1 kernel: [ 4788.377457] option 7-2:1.2: GSM modem (1-port) converter detected kernel: [ 4788.377619] usb 7-2: GSM modem (1-port) converter now attached to ttyUSB2 kernel: [ 4788.377964] usbcore: registered new interface driver option kernel: [ 4788.377967] option: v0.7.2:USB Driver for GSM modems kernel: [ 4789.272108] scsi 8:0:0:0: CD-ROM HUAWEI Mass Storage 2.31 PQ: 0 ANSI: 2 kernel: [ 4789.275092] scsi 8:0:0:1: Direct-Access HUAWEI SD Storage 2.31 PQ: 0 ANSI: 2 kernel: [ 4789.288108] sr1: scsi-1 drive kernel: [ 4789.288260] sr 8:0:0:0: Attached scsi CD-ROM sr1 kernel: [ 4789.288339] sr 8:0:0:0: Attached scsi generic sg2 type 5 kernel: [ 4789.288482] sd 8:0:0:1: Attached scsi generic sg3 type 0 kernel: [ 4789.329095] sd 8:0:0:1: [sdb] Attached SCSI removable disk Here are the relevant device files that appeared: $ ls -altrF /dev/ttyU* /dev/sg[23] /dev/sdb* /dev/sr1 /dev/scd1 /dev/cdrom[34] crw-rw---- 1 root dialout 188, 0 Jul 23 17:13 /dev/ttyUSB0 crw-rw---- 1 root dialout 188, 2 Jul 23 17:13 /dev/ttyUSB2 crw-rw---- 1 root dialout 188, 1 Jul 23 17:13 /dev/ttyUSB1 crw-rw---- 1 root cdrom 21, 2 Jul 23 17:13 /dev/sg2 crw------- 1 root root 21, 3 Jul 23 17:13 /dev/sg3 brw-rw---- 1 root floppy 8, 16 Jul 23 17:13 /dev/sdb brw-rw---- 1 root cdrom 11, 1 Jul 23 17:13 /dev/sr1 lrwxrwxrwx 1 root root 3 Jul 23 17:13 /dev/scd1 -> sr1 lrwxrwxrwx 1 root root 3 Jul 23 17:13 /dev/cdrom4 -> sr1 lrwxrwxrwx 1 root root 3 Jul 23 17:13 /dev/cdrom3 -> sr1 The output obtained with: # lsusb -v -d 12d1:1001 is identical to the one I obtained previously (when usb-modeswitch was installed): $ diff -sq lsusb.out lsusb_noswitching.out Files lsusb.out and lsusb_noswitching.out are identical So, now, I would like to ask: * do I really need usb-modeswitch? * does it harm, if I re-install usb-modeswitch (just in case I need it for another USB modem I might use in the future)? * is there anything else you would like to comment and/or suggest? Thanks for your time and help. -- http://www.inventati.org/frx/frx-gpg-key-transition-2010.txt New GnuPG key, see the transition document! ..................................................... Francesco Poli . GnuPG key fpr == CA01 1147 9CD2 EFDF FB82 3925 3E1C 27E1 1F69 BFFE
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