自从从 12.04 升级到 12.10 后，我无法使用移动宽带调制解调器华为 e173 连接到互联网。它之前运行正常，没有问题，现在似乎被正确识别（至少它的连接出现在网络管理器小程序中），并且在手动选择连接后，它会启动连接程序。大约 20 秒后，它返回到断开连接状态。
浏览互联网后，我发现运行网络管理器：
NM_PPP_DEBUG=1 /usr/sbin/NetworkManager --no-daemon
插入调制解调器后我得到：
NetworkManager[507]: <warn> (ttyUSB2): failed to look up interface index
NetworkManager[507]: <info> (ttyUSB2): new GSM/UMTS device (driver: 'option1' ifindex: 0)
NetworkManager[507]: <info> (ttyUSB2): exported as /org/freedesktop/NetworkManager/Devices/2
NetworkManager[507]: <info> (ttyUSB2): now managed
NetworkManager[507]: <info> (ttyUSB2): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
NetworkManager[507]: <info> (ttyUSB2): deactivating device (reason 'managed') [2]
NetworkManager[507]: <info> (ttyUSB2): device state change: unavailable -> disconnected (reason 'none') [20 30 0]
其中“查找接口索引失败”似乎很可疑。
开始连接后：
NetworkManager[507]: <info> Activation (ttyUSB2) starting connection 'Plus - Dostęp standardowy'
NetworkManager[507]: <info> (ttyUSB2): device state change: disconnected -> prepare (reason 'none') [30 40 0]
NetworkManager[507]: <info> Activation (ttyUSB2) Stage 1 of 5 (Device Prepare) scheduled...
NetworkManager[507]: <info> Activation (ttyUSB2) Stage 1 of 5 (Device Prepare) started...
NetworkManager[507]: <info> (ttyUSB2): device state change: prepare -> need-auth (reason 'none') [40 60 0]
NetworkManager[507]: <info> Activation (ttyUSB2) Stage 1 of 5 (Device Prepare) complete.
NetworkManager[507]: <info> Activation (ttyUSB2) Stage 1 of 5 (Device Prepare) scheduled...
NetworkManager[507]: <info> Activation (ttyUSB2) Stage 1 of 5 (Device Prepare) started...
NetworkManager[507]: <info> (ttyUSB2): device state change: need-auth -> prepare (reason 'none') [60 40 0]
NetworkManager[507]: <info> Activation (ttyUSB2) Stage 1 of 5 (Device Prepare) complete.
NetworkManager[507]: <info> WWAN now enabled by management service
NetworkManager[507]: <info> Activation (ttyUSB2) Stage 2 of 5 (Device Configure) scheduled...
NetworkManager[507]: <info> Activation (ttyUSB2) Stage 2 of 5 (Device Configure) starting...
NetworkManager[507]: <info> (ttyUSB2): device state change: prepare -> config (reason 'none') [40 50 0]
NetworkManager[507]: <info> Activation (ttyUSB2) Stage 2 of 5 (Device Configure) successful.
NetworkManager[507]: <info> Activation (ttyUSB2) Stage 3 of 5 (IP Configure Start) scheduled.
NetworkManager[507]: <info> Activation (ttyUSB2) Stage 2 of 5 (Device Configure) complete.
NetworkManager[507]: <info> Activation (ttyUSB2) Stage 3 of 5 (IP Configure Start) started...
NetworkManager[507]: <info> (ttyUSB2): device state change: config -> ip-config (reason 'none') [50 70 0]
NetworkManager[507]: <info> starting PPP connection
NetworkManager[507]: <info> pppd started with pid 663
NetworkManager[507]: <info> Activation (ttyUSB2) Stage 4 of 5 (IPv6 Configure Timeout) scheduled...
NetworkManager[507]: <info> Activation (ttyUSB2) Stage 3 of 5 (IP Configure Start) complete.
NetworkManager[507]: <info> Activation (ttyUSB2) Stage 4 of 5 (IPv6 Configure Timeout) started...
NetworkManager[507]: <info> Activation (ttyUSB2) Stage 4 of 5 (IPv6 Configure Timeout) complete.
Plugin /usr/lib/pppd/2.4.5/nm-pppd-plugin.so loaded.
** Message: nm-ppp-plugin: (plugin_init): initializing
** Message: nm-ppp-plugin: (nm_phasechange): status 3 / phase 'serial connection'
Removed stale lock on ttyUSB2 (pid 32146)
using channel 23
NetworkManager[507]: SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/ppp0, iface: ppp0)
NetworkManager[507]: SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/ppp0, iface: ppp0): no ifupdown configuration found.
NetworkManager[507]: <warn> /sys/devices/virtual/net/ppp0: couldn't determine device driver; ignoring...
Using interface ppp0
Connect: ppp0 <--> /dev/ttyUSB2
** Message: nm-ppp-plugin: (nm_phasechange): status 5 / phase 'establish'
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x64b4024a> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x64b4024a> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x64b4024a> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x64b4024a> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x64b4024a> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x64b4024a> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x64b4024a> <pcomp> <accomp>]
NetworkManager[507]: <warn> pppd timed out or didn't initialize our dbus module
NetworkManager[507]: <info> Activation (ttyUSB2) Stage 4 of 5 (IPv4 Configure Timeout) scheduled...
NetworkManager[507]: <info> Activation (ttyUSB2) Stage 4 of 5 (IPv4 Configure Timeout) started...
NetworkManager[507]: <info> (ttyUSB2): device state change: ip-config -> failed (reason 'ip-config-unavailable') [70 120 5]
NetworkManager[507]: <warn> Activation (ttyUSB2) failed for connection 'Plus - Dostęp standardowy'
NetworkManager[507]: <info> Activation (ttyUSB2) Stage 4 of 5 (IPv4 Configure Timeout) complete.
NetworkManager[507]: <info> (ttyUSB2): device state change: failed -> disconnected (reason 'none') [120 30 0]
NetworkManager[507]: <info> (ttyUSB2): deactivating device (reason 'none') [0]
Terminating on signal 15
** Message: nm-ppp-plugin: (nm_phasechange): status 10 / phase 'terminate'
sent [LCP TermReq id=0x2 "User request"]
NetworkManager[507]: SCPlugin-Ifupdown: devices removed (path: /sys/devices/virtual/net/ppp0, iface: ppp0)
重复的地方：
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x64b4024a> <pcomp> <accomp>]
持续约20秒。
我尝试降级网络管理器但由于存在许多依赖关系而失败。
有人能指出我的解决方案或者告诉我应该怎么做才能进一步调查这个问题吗？
答案1
答案2
答案3
如果您尝试了在 Ubuntu 12.10 上安装华为 E176 的所有选项，但都没有成功。本博客上有说明，并提供了安装的替代想法，如果您需要支持，请联系博主。文本是葡萄牙语，如果谷歌翻译对您没有帮助，博客的创建者可以尝试：https://www.blogger.com/blogger.g?blogID=5276226360297889948#editor/target=post;postID=2007798084129220816;onPublishedMenu=allposts;onClosedMenu=allposts;postNum=1;src=postname