Karena penasaran dengan permasalahan pada grup Ayo Belajar Linux di facebook tentang permasalahan modem usb yang tidak bisa di eject, kebetulan modem tersebut berchip Qualcomm, saya pun membongkar koleksi modem jadul saya yang kebetulan berchip Qualcomm juga, modemnya dilabel "EVDO MODEM"
Laptop dengan OS Ubuntu Linux 12.10 saya hidupkan dan modemnya saya colokan, lalu diterminal di ketik dmesg, hasilnya:
[ 314.872077] usb 6-1: new full-speed USB device number 2 using uhci_hcd
[ 315.035335] usb 6-1: New USB device found, idVendor=05c6, idProduct=1000
[ 315.035340] usb 6-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 315.035343] usb 6-1: Product: USB MMC Storage
[ 315.035346] usb 6-1: Manufacturer: Qualcomm, Incorporated
[ 315.035348] usb 6-1: SerialNumber: 000000000002
[ 315.144632] Initializing USB Mass Storage driver...
[ 315.148344] scsi6 : usb-storage 6-1:1.0
[ 315.148466] usbcore: registered new interface driver usb-storage
[ 315.148468] USB Mass Storage support registered.
[ 315.318664] usbcore: registered new interface driver uas
[ 316.155796] scsi 6:0:0:0: Direct-Access Qualcomm MMC Storage 2.31 PQ: 0 ANSI: 2
[ 316.158826] scsi 6:0:0:1: CD-ROM Qualcomm MMC Storage 2.31 PQ: 0 ANSI: 2
[ 316.159646] sd 6:0:0:0: Attached scsi generic sg2 type 0
[ 316.182777] sr1: scsi-1 drive
[ 316.182963] sr 6:0:0:1: Attached scsi CD-ROM sr1
[ 316.183071] sr 6:0:0:1: Attached scsi generic sg3 type 5
[ 316.263754] sd 6:0:0:0: [sdb] Attached SCSI removable disk
Dari hasil tersebut diatas modemnya terletak di sr1, kita coba eject
sudo eject /dev/sr1
eject: unable to find or open device for: `/dev/sr1'
Laptop saya matikan, lalu modemnya saya colokan lalu dihidupkan booting ke Ubuntu 12.10, buka terminal
lsusb, hasilnya:
Saya coba matikan laptop dan dalam kondisi mati modem dicolokin lalu dihidupkan kembali, lalu saya lakukan lsusb hasilnya:
Bus 006 Device 002: ID 1d09:4306 TechFaith Wireless Technology Limited
sudah terdeteksi ternyata, sekarang kita lakukan modprobe
sudo modprobe usbserial vendor=0x1d09 product=0x4306
cek dengan dmesg
[ 301.414459] usbserial_generic 6-1:1.0: generic converter detected
[ 301.414567] usb 6-1: generic converter now attached to ttyUSB0
[ 301.414591] usbserial_generic 6-1:1.1: The "generic" usb-serial driver is only for testing and one-off prototypes.
[ 301.414593] usbserial_generic 6-1:1.1: Tell linux-usb@vger.kernel.org to add your device to a proper driver.
[ 301.414595] usbserial_generic 6-1:1.1: generic converter detected
[ 301.414661] usb 6-1: generic converter now attached to ttyUSB1
[ 301.414680] usbserial_generic 6-1:1.2: The "generic" usb-serial driver is only for testing and one-off prototypes.
[ 301.414683] usbserial_generic 6-1:1.2: Tell linux-usb@vger.kernel.org to add your device to a proper driver.
[ 301.414685] usbserial_generic 6-1:1.2: generic converter detected
[ 301.414749] usb 6-1: generic converter now attached to ttyUSB2
[ 301.414761] usbserial: USB Serial Driver core
Dicek dinetwork manager ternyata sudah terdeteksi juga
supaya kita tidak melakukan modprobe lagi, kita masukan ke /etc/modules
sudo gedit /etc/modules
Paste baris berikut dibaris paling bawah
usbserial vendor=0x1d09 product=0x4306
Simpan
Atau bisa cara lain dengan menguncomment salah satu parameter di usb-modeswitch, caranya seperti pada postingan ini:
http://www.patenpisan.com/2011/09/ubuntu-seting-modem-venus-fast-2.html
Semoga berguna
