我安装了 ubuntu 11.10，从一开始我的网络指示器中就没有移动宽带。
它曾经以实时 CD 的形式工作，但是当我安装它时，移动宽带根本没有列出。
当我插入我的 3g USB 调制解调器时，我得到/var/log/syslog：
Mar 12 21:08:12 goran-home-ubuntu kernel: [ 1349.648137] usb 2-4: new high speed USB device number 13 using ehci_hcd
Mar 12 21:08:12 goran-home-ubuntu mtp-probe: checking bus 2, device 13: "/sys/devices/pci0000:00/0000:00:1d.7/usb2/2-4"
Mar 12 21:08:12 goran-home-ubuntu kernel: [ 1349.786894] scsi16 : usb-storage 2-4:1.0
Mar 12 21:08:13 goran-home-ubuntu mtp-probe: bus: 2, device: 13 was not an MTP device
Mar 12 21:08:13 goran-home-ubuntu usb_modeswitch: switching 1bbb:f000 (USBModem: HSPA Data Card)
Mar 12 21:08:14 goran-home-ubuntu kernel: [ 1351.025293] usb 2-4: USB disconnect, device number 13
Mar 12 21:08:14 goran-home-ubuntu kernel: [ 1351.392152] usb 2-4: new high speed USB device number 14 using ehci_hcd
Mar 12 21:08:14 goran-home-ubuntu mtp-probe: checking bus 2, device 14: "/sys/devices/pci0000:00/0000:00:1d.7/usb2/2-4"
Mar 12 21:08:14 goran-home-ubuntu mtp-probe: bus: 2, device: 14 was not an MTP device
Mar 12 21:08:14 goran-home-ubuntu kernel: [ 1351.536138] option 2-4:1.0: GSM modem (1-port) converter detected
Mar 12 21:08:14 goran-home-ubuntu kernel: [ 1351.536280] usb 2-4: GSM modem (1-port) converter now attached to ttyUSB0
Mar 12 21:08:14 goran-home-ubuntu kernel: [ 1351.536412] option 2-4:1.1: GSM modem (1-port) converter detected
Mar 12 21:08:14 goran-home-ubuntu kernel: [ 1351.536503] usb 2-4: GSM modem (1-port) converter now attached to ttyUSB1
Mar 12 21:08:14 goran-home-ubuntu kernel: [ 1351.536932] scsi17 : usb-storage 2-4:1.2
Mar 12 21:08:14 goran-home-ubuntu kernel: [ 1351.537215] option 2-4:1.3: GSM modem (1-port) converter detected
Mar 12 21:08:14 goran-home-ubuntu kernel: [ 1351.537350] usb 2-4: GSM modem (1-port) converter now attached to ttyUSB2
Mar 12 21:08:14 goran-home-ubuntu usb_modeswitch: switched to 1bbb:0000 (USBModem: HSPA Data Card)
Mar 12 21:08:15 goran-home-ubuntu usb_modeswitch[32008]: usb_modeswitch: adding device ID 1bbb:0000 to driver option
Mar 12 21:08:15 goran-home-ubuntu kernel: [ 1352.538247] scsi 17:0:0:0: Direct-Access USBModem MMC Storage 2.31 PQ: 0 ANSI: 2
Mar 12 21:08:15 goran-home-ubuntu kernel: [ 1352.564799] sd 17:0:0:0: Attached scsi generic sg2 type 0
Mar 12 21:08:15 goran-home-ubuntu kernel: [ 1352.571989] sd 17:0:0:0: [sdb] Attached SCSI removable disk
看起来 USB 调制解调器已准备就绪（我看到闪烁的绿灯）但什么也没发生。
我不知道这是否相关，但在我的网络设置中，飞行模式始终处于开启状态，我甚至无法将无线模式切换为开启状态并将飞行模式切换为关闭状态。另请注意，网络设置中没有移动宽带选项。
当我跑步时lsusb我得到了这个：
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 04f2:b128 Chicony Electronics Co., Ltd
Bus 002 Device 016: ID 1bbb:0000 T & A Mobile Phones
Bus 008 Device 002: ID 0930:020f Toshiba Corp.
编辑：我用阿尔卡特 X080S3g USB 调制解调器棒。
答案1
问题出在 ALCATEL 调制解调器上，使用新版本的 ubuntu (12.04) 一切正常。因此我建议遇到此问题的人升级。
答案2
您能否检查系统托盘中音量图标左侧的网络图标。单击那里您将看到编辑连接。单击它您将找到移动宽带。然后“添加”。
如果我犯了错误，请提前致歉。我不是 Linux 专家。