无法使用zte（reliance cdma）AC2739 USB调制解调器在Ubuntu 14.0.4笔记本电脑上连接到Internet

许多Linux / Ubuntu用户都遇到此问题->（使用调制解调器zte / etc等连接到Internet。），因为现代的加密狗具有USB存储设备+调制解调器+ CD ROM，usb_modes开关很容易......... ..............

我怎么了 ->我无法**（有时能够）**使用ZTE（Reliance cdma）AC2739连接互联网。

Ubuntu如何检测我的USB软件狗？答：有3种方式：

1）不要检测USB设备，而是lsusb显示该设备。

2）检测到该设备（插入USB后10个情况下为1个），但网络管理器未将其检测为宽带连接。

3）检测到设备（插入USB后15种情况下为1种），并且网络管理器将其检测为宽带连接----->当我能够连接到Internet时就是这种情况。

所有3种情况的系统日志：

常用日志（这是我每次插入USB加密狗时系统日志显示的内容）

'May 20 20:51:19 pcp kernel: [ 2724.187204] usb 3-3: new full-speed USB device number 10 using xhci_hcd<br/>
May 20 20:51:19 pcp kernel: [ 2724.205404] usb 3-3: New USB device found, idVendor=19d2, idProduct=fff1<br/>
May 20 20:51:19 pcp kernel: [ 2724.205415] usb 3-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3<br/>
May 20 20:51:19 pcp kernel: [ 2724.205420] usb 3-3: Product: ZTE CDMA Tech<br/>
May 20 20:51:19 pcp kernel: [ 2724.205425] usb 3-3: Manufacturer: ZTE, Incorporated
May 20 20:51:19 pcp kernel: [ 2724.205430] usb 3-3: SerialNumber: 000000000002
May 20 20:51:19 pcp kernel: [ 2724.208710] usb-storage 3-3:1.5: USB Mass Storage device detected
May 20 20:51:19 pcp kernel: [ 2724.208930] scsi14 : usb-storage 3-3:1.5
May 20 20:51:19 pcp mtp-probe: checking bus 3, device 10: "/sys/devices/pci0000:00/0000:00:14.0/usb3/3-3"
May 20 20:51:19 pcp mtp-probe: bus: 3, device: 10 was not an MTP device'

情况1 ：（不播种普通日志->上面的一种）

May 20 18:52:15 pcp usb_modeswitch: switch device 19d2:fff5 on 003/003
May 20 18:52:42 pcp kernel: [ 3082.599319] scsi 7:0:0:0: CD-ROM            ZTE      USB Storage FFF1 2.31 PQ: 0 ANSI: 2
May 20 18:52:42 pcp kernel: [ 3082.601400] scsi 7:0:0:1: Direct-Access     ZTE      USB Storage FFF1 2.31 PQ: 0 ANSI: 2
May 20 18:52:43 pcp kernel: [ 3083.337421] sr1: scsi3-mmc drive: 0x/0x caddy
May 20 18:52:43 pcp kernel: [ 3083.337618] sr 7:0:0:0: Attached scsi CD-ROM sr1
May 20 18:52:43 pcp kernel: [ 3083.337689] sr 7:0:0:0: Attached scsi generic sg2 type 5
May 20 18:52:43 pcp kernel: [ 3083.338257] sd 7:0:0:1: Attached scsi generic sg3 type 0
May 20 18:52:43 pcp kernel: [ 3083.346309] sd 7:0:0:1: [sdb] Attached SCSI removable disk
May 20 18:52:43 pcp kernel: [ 3083.386955] systemd-udevd[5293]: Failed to apply ACL on /dev/sr1: No such file or directory
May 20 18:52:43 pcp kernel: [ 3083.386971] systemd-udevd[5293]: Failed to apply ACL on /dev/sr1: No such file or directory
May 20 18:52:43 pcp kernel: [ 3083.391821] systemd-udevd[5293]: Failed to apply ACL on /dev/sr1: No such file or directory
May 20 18:52:43 pcp kernel: [ 3083.391832] systemd-udevd[5293]: Failed to apply ACL on /dev/sr1: No such file or directory

情况2（不播种普通日志->在顶部提供）

May 20 19:35:52 pcp kernel: [  910.651091] usb 3-3: reset full-speed USB device number 8 using xhci_hcd
May 20 19:35:52 pcp kernel: [  910.667601] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800777e6180
May 20 19:35:52 pcp kernel: [  910.667613] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800777e61c0
May 20 19:35:52 pcp kernel: [  910.672647] scsi 12:0:0:0: CD-ROM            ZTE      USB Storage FFF1 2.31 PQ: 0 ANSI: 2
May 20 19:35:52 pcp kernel: [  910.674693] scsi 12:0:0:1: Direct-Access     ZTE      USB Storage FFF1 2.31 PQ: 0 ANSI: 2
May 20 19:35:52 pcp kernel: [  910.679319] sr1: scsi3-mmc drive: 372x/372x writer dvd-ram cd/rw xa/form2 cdda 
May 20 19:35:52 pcp kernel: [  910.679996] sr 12:0:0:0: Attached scsi CD-ROM sr1
May 20 19:35:52 pcp kernel: [  910.681364] sr 12:0:0:0: Attached scsi generic sg2 type 5
May 20 19:35:52 pcp kernel: [  910.682692] sd 12:0:0:1: Attached scsi generic sg3 type 0
May 20 19:35:52 pcp kernel: [  910.689527] sd 12:0:0:1: [sdb] Attached SCSI removable disk
May 20 19:35:52 pcp kernel: [  910.789754] sr1: CDROM (ioctl) error, command: Xdread, Read track info 52 01 00 00 00 01 00 00 08 00
May 20 19:35:52 pcp kernel: [  910.789777] sr: Sense Key : Hardware Error [current] 
May 20 19:35:52 pcp kernel: [  910.789783] sr: Add. Sense: No additional sense information
May 20 19:35:52 pcp kernel: [  911.234442] ISO 9660 Extensions: Microsoft Joliet Level 1
May 20 19:35:52 pcp kernel: [  911.247345] ISOFS: changing to secondary root
May 20 19:35:52 pcp udisksd[2223]: Mounted /dev/sr1 at /media/prakash/Reliance on behalf of uid 1000

情况3 ：（不播种普通日志->在顶部提供）

    May 20 20:51:19 pcp kernel: [ 2724.248971] usbcore: registered new interface driver usbserial
    May 20 20:51:19 pcp kernel: [ 2724.248989] usbcore: registered new interface driver usbserial_generic
    May 20 20:51:19 pcp kernel: [ 2724.249002] usbserial: USB Serial support registered for generic
   May 20 20:51:19 pcp kernel: [ 2724.264994] usbcore: registered new interface driver option
    May 20 20:51:19 pcp kernel: [ 2724.265650] usbserial: USB Serial support registered for GSM modem (1-port)
    May 20 20:51:19 pcp kernel: [ 2724.265826] option 3-3:1.0: GSM modem (1-port) converter detected
    May 20 20:51:19 pcp kernel: [ 2724.265979] usb 3-3: GSM modem (1-port) converter now attached to ttyUSB0
    May 20 20:51:19 pcp kernel: [ 2724.266042] option 3-3:1.1: GSM modem (1-port) converter detected
    May 20 20:51:19 pcp kernel: [ 2724.266161] usb 3-3: GSM modem (1-port) converter now attached to ttyUSB1
    May 20 20:51:19 pcp kernel: [ 2724.266218] option 3-3:1.2: GSM modem (1-port) converter detected
    May 20 20:51:19 pcp kernel: [ 2724.266334] usb 3-3: GSM modem (1-port) converter now attached to ttyUSB2
    May 20 20:51:19 pcp kernel: [ 2724.266390] option 3-3:1.3: GSM modem (1-port) converter detected
    May 20 20:51:19 pcp kernel: [ 2724.266505] usb 3-3: GSM modem (1-port) converter now attached to ttyUSB3
    May 20 20:51:19 pcp kernel: [ 2724.266562] option 3-3:1.4: GSM modem (1-port) converter detected
    May 20 20:51:19 pcp kernel: [ 2724.266687] usb 3-3: GSM modem (1-port) converter now attached to ttyUSB4
   May 20 20:51:19 pcp kernel: [ 2724.266757] option 3-3:1.6: GSM modem (1-port) converter detected
    May 20 20:51:19 pcp kernel: [ 2724.266885] usb 3-3: GSM modem (1-port) converter now attached to ttyUSB5
    May 20 20:51:20 pcp ModemManager[720]: <warn>  (ttyUSB5): port attributes not fully set
    May 20 20:51:20 pcp ModemManager[720]: <warn>  (ttyUSB2): port attributes not fully set
    May 20 20:51:20 pcp ModemManager[720]: <warn>  (ttyUSB3): port attributes not fully set
    May 20 20:51:20 pcp ModemManager[720]: <warn>  (ttyUSB1): port attributes not fully set
    May 20 20:51:20 pcp ModemManager[720]: <warn>  (ttyUSB0): port attributes not fully set
    May 20 20:51:20 pcp ModemManager[720]: <warn>  (ttyUSB4): port attributes not fully set

    May 20 20:51:20 pcp usb_modeswitch: switched to 19d2:ffffffff on 003/009
    May 20 20:51:20 pcp kernel: [ 2725.207972] scsi 14:0:0:0: CD-ROM            ZTE      USB Storage FFF1 2.31 PQ: 0 ANSI: 2
    May 20 20:51:20 pcp kernel: [ 2725.210011] scsi 14:0:0:1: Direct-Access     ZTE      USB Storage FFF1 2.31 PQ: 0 ANSI: 2
   May 20 20:51:21 pcp usb_modeswitch[4855]: usb_modeswitch: switched to 19d2:fff1 on 3/10
    May 20 20:51:21 pcp kernel: [ 2725.888378] sr1: scsi3-mmc drive: 372x/372x writer dvd-ram cd/rw xa/form2 cdda 
    May 20 20:51:21 pcp kernel: [ 2725.888912] sr 14:0:0:0: Attached scsi CD-ROM sr1
    May 20 20:51:21 pcp kernel: [ 2725.889419] sr 14:0:0:0: Attached scsi generic sg2 type 5
    May 20 20:51:21 pcp kernel: [ 2725.893403] sd 14:0:0:1: Attached scsi generic sg3 type 0
    <br/>May 20 20:51:21 pcp kernel: [ 2725.910131] sd 14:0:0:1: [sdb] Attached SCSI removable disk
    May 20 20:51:21 pcp kernel: [ 2726.006326] sr1: CDROM (ioctl) error, command: Xdread, Read track info 52 01 00 00 00 01 00 00 08 00
    May 20 20:51:21 pcp kernel: [ 2726.006351] sr: Sense Key : Hardware Error [current] 
    May 20 20:51:21 pcp kernel: [ 2726.006357] sr: Add. Sense: No additional sense information

    May 20 20:51:22 pcp usb_modeswitch[4855]: usb_modeswitch: add device ID 19d2:fff1 to driver option
    May 20 20:51:22 pcp usb_modeswitch[4855]: usb_modeswitch: please report the device ID to the Linux USB developers!

    May 20 20:51:22 pcp kernel: [ 2726.597676] ISO 9660 Extensions: Microsoft Joliet Level 1
   May 20 20:51:22 pcp kernel: [ 2726.608596] ISOFS: changing to secondary root
    May 20 20:51:22 pcp udisksd[2228]: Mounted /dev/sr1 at /media/prakash/Reliance on behalf of uid 1000
   May 20 20:51:38 pcp ModemManager[720]: <info>  Creating modem with plugin 'ZTE' and '6' ports
    May 20 20:51:38 pcp ModemManager[720]: <warn>  Could not grab port (tty/ttyUSB4): 'Cannot add port 'tty/ttyUSB4', unhandled serial type'
    May 20 20:51:38 pcp ModemManager[720]: <warn>  Could not grab port (tty/ttyUSB2): 'Cannot add port 'tty/ttyUSB2', unhandled serial type'
    May 20 20:51:38 pcp ModemManager[720]: <warn>  Could not grab port (tty/ttyUSB5): 'Cannot add port 'tty/ttyUSB5', unhandled serial type'
    <br/>May 20 20:51:38 pcp ModemManager[720]: <warn>  (ttyUSB0): port attributes not fully set
    May 20 20:51:38 pcp ModemManager[720]: <info>  Modem for device at '/sys/devices/pci0000:00/0000:00:14.0/usb3/3-3' successfully created
    May 20 20:51:39 pcp ModemManager[720]: <warn>  Couldn't load unlock retries: 'Unknown error'
    May 20 20:51:39 pcp ModemManager[720]: <warn>  couldn't load list of Own Numbers: 'Failed to parse NV MDN command result: -17'
    May 20 20:51:39 pcp ModemManager[720]: <warn>  couldn't load current allowed/preferred modes: 'Unknown error'
    <br/>May 20 20:51:39 pcp ModemManager[720]: <info>  Modem: state changed (unknown -> disabled)
    May 20 20:51:39 pcp NetworkManager[784]: <warn> (ttyUSB0): failed to look up interface index
    May 20 20:51:39 pcp NetworkManager[784]: <info> (ttyUSB0): new Broadband device (driver: 'option1' ifindex: 0)
    May 20 20:51:39 pcp NetworkManager[784]: <info> (ttyUSB0): exported as /org/freedesktop/NetworkManager/Devices/2
    May 20 20:51:39 pcp NetworkManager[784]: <info> (ttyUSB0): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
    May 20 20:51:39 pcp NetworkManager[784]: <info> (ttyUSB0): deactivating device (reason 'managed') [2]
    May 20 20:51:39 pcp NetworkManager[784]: <info> (ttyUSB0): device state change: unavailable -> disconnected (reason 'none') [20 30 0]

如果有人想要整个日志的文本文件，请告诉我。这个问题在许多USB加密狗中都有。如果任何人都可以提供解决此问题的方法，请执行此操作。我尝试从3天开始，希望我现在能找到解决方案。