问题[usb-modeswitch](ubuntu)

我最近购买了一个包含 Realtek rtl8811CU 芯片组的 Wifi 加密狗。我正在使用 Ubuntu 18.04 LTS。

幸运的是，在找到这个Github repo之后，我可以编译它并安装驱动程序而没有任何问题。

但是，每次我连接加密狗时，都会被检测为磁盘，我需要运行 usb_modeswitch 才能使其工作：

$ lsusb
 [...]
 Bus 001 Device 013: ID 0bda:1a2b Realtek Semiconductor Corp. 
$ sudo usb_modeswitch -KW -v 0bda -p 1a2b
$ lsusb
 [...]
 Bus 001 Device 014: ID 0bda:c811 Realtek Semiconductor Corp.

设备 ID 更改，现在我可以正确使用我的 Wifi 加密狗。

我尝试将此条目添加到位于 /lib/udev/rules.d/40-usb_modeswitch.rules 中的 udev 规则中，据说每次检测到设备时都会运行该命令：

 # Realtek 8211CU Wifi AC USB
 ATTR{idVendor}=="0bda", ATTR{idProduct}=="1a2b", RUN+="usb_modeswitch '/%k'"

但后来我recconect，没有任何反应。

我已经检查过，也许您需要一项服务来执行此操作，但似乎无法激活。

$ systemctl --all | grep usb_modeswitch
● usb_modeswitch@1-4.1.service    loaded    failed   failed    USB_ModeSwitch_1-4.1                                                            
system-usb_modeswitch.slice       loaded    active   active    system-usb_modeswitch.slice    

$ systemctl status usb_modeswitch@1-4.1.service
● usb_modeswitch@1-4.1.service - USB_ModeSwitch_1-4.1
Loaded: loaded (/lib/systemd/system/usb_modeswitch@.service; static; vendor preset: enabled)
Active: failed (Result: exit-code) since Thu 2018-10-04 11:49:17 CDT; 2min 5s ago
    Docs: man:usb_modeswitch_dispatcher(1)
Process: 32216 ExecStart=/usr/sbin/usb_modeswitch_dispatcher --switch-mode 1-4.1 (code=exited, status=1/FAILURE)
Main PID: 32216 (code=exited, status=1/FAILURE)

oct 04 11:49:17  systemd[1]: Starting USB_ModeSwitch_1-4.1...
oct 04 11:49:17  usb_modeswitch_dispatcher[32216]: Could not read attribute: No such file or directory
oct 04 11:49:17  usb_modeswitch_dispatcher[32216]: Could not read attribute: No such file or directory
oct 04 11:49:17  systemd[1]: usb_modeswitch@1-4.1.service: Main process exited, code=exited, status=1/FAILURE
oct 04 11:49:17  systemd[1]: usb_modeswitch@1-4.1.service: Failed with result 'exit-code'.
oct 04 11:49:17  systemd[1]: Failed to start USB_ModeSwitch_1-4.1.

似乎 Ubuntu 包装器有问题，有谁知道我该如何进一步调查？我是 systemd 和 udev 规则的新手，所以我不确定在哪里可以找到更多日志或调试功能。

我正在运行 ubuntu 10.04。我有一个新购买的支持 Windows 和 Mac 的 TATA Photon+ 互联网连接。在网上找到一篇文章说可以在Linux上配置。我按照此链接在 Ubuntu 上安装它的步骤。我仍然无法上网，需要一些帮助。

此外，它非常慢，但有人告诉我，我会看到高达 3.1MB 的速度。

我没有安装 wvdial 并且无法从 apt 安装它，因为我没有连接到互联网

从 Windows 启动我下载了“wvdial”.deb 包并尝试在 ubuntu 上安装，但它以依赖问题结束。自动，不知道怎么回事，我只连接了一次互联网。在此之后我立即安装了 wvdial 包，我按照教程进行操作（我无法在此处浏览和上传文件）。从那时起，它显示设备已连接到网络连接但没有互联网连接。一旦我禁用该设备，它就不会再次显示为已连接，我将不得不重新启动我的系统。有时设备本身未检测到（想知道是否有任何命令可以重新读取所有设备）。

wvdialconf /etc/wvdial.cof的输出：

#wvdialconf /etc/wvdial.conf

Editing `/etc/wvdial.conf'.

Scanning your serial ports for a modem.

ttyS0<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud
ttyS0<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud
ttyS0<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up.
Modem Port Scan<*1>: S1   S2   S3   
WvModem<*1>: Cannot get information for serial port.
ttyUSB0<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud
ttyUSB0<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 9600 baud
ttyUSB0<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up.
WvModem<*1>: Cannot get information for serial port.
ttyUSB1<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud
ttyUSB1<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 9600 baud
ttyUSB1<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up.
WvModem<*1>: Cannot get information for serial port.
ttyUSB2<*1>: ATQ0 V1 E1 -- OK
ttyUSB2<*1>: ATQ0 V1 E1 Z -- OK
ttyUSB2<*1>: ATQ0 V1 E1 S0=0 -- OK
ttyUSB2<*1>: ATQ0 V1 E1 S0=0 &C1 -- OK
ttyUSB2<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK
ttyUSB2<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK
ttyUSB2<*1>: Modem Identifier: ATI -- Manufacturer: +GMI: HUAWEI TECHNOLOGIES CO., LTD
ttyUSB2<*1>: Speed 9600: AT -- OK
ttyUSB2<*1>: Max speed is 9600; that should be safe.
ttyUSB2<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK

Found a modem on /dev/ttyUSB2.
Modem configuration written to /etc/wvdial.conf.
ttyUSB2<Info>: Speed 9600; init "ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0"

wvdial的输出：

#wvdial
--> WvDial: Internet dialer version 1.60
--> Cannot get information for serial port.
--> Initializing modem.
--> Sending: ATZ
ATZ
OK
--> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
OK
--> Sending: AT+CRM=1
AT+CRM=1
OK
--> Modem initialized.
--> Sending: ATDT#777
--> Waiting for carrier.
ATDT#777
CONNECT
--> Carrier detected.  Starting PPP immediately.
--> Starting pppd at Sat Oct 16 15:30:47 2010
--> Pid of pppd: 5681
--> Using interface ppp0
--> pppd: (u;[08]@s;[08]`{;[08]
--> pppd: (u;[08]@s;[08]`{;[08]
--> pppd: (u;[08]@s;[08]`{;[08]
--> pppd: (u;[08]@s;[08]`{;[08]
--> pppd: (u;[08]@s;[08]`{;[08]
--> pppd: (u;[08]@s;[08]`{;[08]
--> local  IP address 14.96.147.104
--> pppd: (u;[08]@s;[08]`{;[08]
--> remote IP address 172.29.161.223
--> pppd: (u;[08]@s;[08]`{;[08]
--> primary   DNS address 121.40.152.90
--> pppd: (u;[08]@s;[08]`{;[08]
--> secondary DNS address 121.40.152.100  
--> pppd: (u;[08]@s;[08]`{;[08]

日志消息/var/log/messages的输出：

Oct 16 15:29:44 avyakta-desktop pppd[5119]: secondary DNS address 121.242.190.180
Oct 16 15:29:58 desktop pppd[5119]: Terminating on signal 15
Oct 16 15:29:58 desktop pppd[5119]: Connect time 0.3 minutes.
Oct 16 15:29:58 desktop pppd[5119]: Sent 0 bytes, received 177 bytes.
Oct 16 15:29:58 desktop pppd[5119]: Connection terminated.
Oct 16 15:30:47 desktop pppd[5681]: pppd 2.4.5 started by root, uid 0
Oct 16 15:30:47 desktop pppd[5681]: Using interface ppp0
Oct 16 15:30:47 desktop pppd[5681]: Connect: ppp0 <--> /dev/ttyUSB2
Oct 16 15:30:47 desktop pppd[5681]: CHAP authentication succeeded
Oct 16 15:30:47 desktop pppd[5681]: CHAP authentication succeeded
Oct 16 15:30:48 desktop pppd[5681]: local  IP address 14.96.147.104
Oct 16 15:30:48 desktop pppd[5681]: remote IP address 172.29.161.223
Oct 16 15:30:48 desktop pppd[5681]: primary   DNS address 121.40.152.90
Oct 16 15:30:48 desktop pppd[5681]: secondary DNS address 121.40.152.100

编辑 1：

我尝试了以下

sudo stop network-manager
sudo killall modem-manager

sudo /usr/sbin/modem-manager --debug > ~/mm.log 2>&1 &

sudo /usr/sbin/NetworkManager --no-daemon > ~/nm.log 2>&1 &

mm.log的输出：

#vim ~/mm.log:

** Message: Loaded plugin Option High-Speed

** Message: Loaded plugin Option

** Message: Loaded plugin Huawei

** Message: Loaded plugin Longcheer

** Message: Loaded plugin AnyData

** Message: Loaded plugin ZTE

** Message: Loaded plugin Ericsson MBM

** Message: Loaded plugin Sierra

** Message: Loaded plugin Generic

** Message: Loaded plugin Gobi

** Message: Loaded plugin Novatel

** Message: Loaded plugin Nokia

** Message: Loaded plugin MotoC

nm.log的输出：

#vim ~/nm.log:

NetworkManager: <info>  starting...

NetworkManager: <info>  modem-manager is now available

NetworkManager:    SCPlugin-Ifupdown: init!

NetworkManager:    SCPlugin-Ifupdown: update_system_hostname

NetworkManager:    SCPluginIfupdown: guessed connection type (eth0) = 802-3-ethernet

NetworkManager:    SCPlugin-Ifupdown: update_connection_setting_from_if_block:     

name:eth0, type:802-3-ethernet, id:Ifupdown (eth0), uuid: 681b428f-beaf-8932-dce4-678ed5bae28e

NetworkManager:    SCPlugin-Ifupdown: addresses count: 1

NetworkManager:    SCPlugin-Ifupdown: No dns-nameserver configured in /etc/network/interfaces

NetworkManager: nm-ifupdown-connection.c.119 - invalid connection read from /etc/network/interfaces: (1) addresses

NetworkManager:    SCPluginIfupdown: management mode: unmanaged

NetworkManager:    SCPlugin-Ifupdown: devices added (path: /sys/devices/pci0000:00/0000:00:14.4/0000:02:02.0/net/eth1, iface: eth1)

NetworkManager:    SCPlugin-Ifupdown: device added (path: /sys/devices/pci0000:00/0000:00:14.4/0000:02:02.0/net/eth1, iface: eth1): no ifupdown configuration found.

NetworkManager:    SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/lo, iface: lo)

@

至少从 Jaunty 开始，我就尝试让我妻子的 3G USB 调制解调器在 Ubuntu 上工作，结果总是相同 - 即时、完全系统冻结。

我已经尝试安装`wvdial 和 usb-modeswitch，我已经阅读了大量文档，但它从一个版本到下一个版本变得非常脱节，没有任何效果。我无法运行 lsusb 因为系统立即挂起。

我正在使用 Lucid，它是 Rogers 的“Rocket Stick”（在加拿大）