USB Tethering保持断开连接
我正试图通过我的LG G4的USB网络共享进行连接。 我有Ubuntu 16.04
束缚仅工作1或2分钟，但之后断开连接。 如果我拔下并重新插上电缆，它会重新连接，但只需一分钟左右。
如果我激活wifi网络共享它工作正常..
谁能给我一些关于如何诊断和理解为什么会这样做的建议？
提前致谢 ：）
从14.04升级到16.04.1之后我刚刚经历过这个完全相同的问题（其中USB网络共享工作了很多年）。
基于syslog，它看起来像是由与ModemManager的冲突引起的。
Aug 25 13:12:24 outback NetworkManager[2543]: [1472145144.1334] device (enp0s20u2): Activation: successful, device activated. [...eliding log entries related to nm-dispatcher services] Aug 25 13:12:38 outback ModemManager[2503]: Creating modem with plugin 'Generic' and '2' ports Aug 25 13:12:38 outback ModemManager[2503]: Modem for device at '/sys/devices/pci0000:00/0000:00:14.0/usb3/3-2' successfully created Aug 25 13:12:41 outback ModemManager[2503]: couldn't load Manufacturer: 'Serial command timed out' Aug 25 13:12:44 outback ModemManager[2503]: couldn't load Model: 'Serial command timed out' Aug 25 13:12:47 outback ModemManager[2503]: couldn't load Revision: 'Serial command timed out' Aug 25 13:12:50 outback ModemManager[2503]: couldn't load Equipment Identifier: 'Serial command timed out' Aug 25 13:12:50 outback ModemManager[2503]: couldn't load Operator name: 'SIM failed to handle CRSM request (sw1 106 sw2 130)' Aug 25 13:12:54 outback ModemManager[2503]: couldn't load IMEI: 'Serial command timed out' Aug 25 13:12:54 outback ModemManager[2503]: Modem: state changed (unknown -> disabled) Aug 25 13:12:54 outback NetworkManager[2543]: [1472145174.3879] device (enp0s20u2): state change: activated -> deactivating (reason 'connection-removed') [100 110 38] Aug 25 13:12:54 outback NetworkManager[2543]: [1472145174.3881] manager: NetworkManager state is now DISCONNECTING Aug 25 13:12:54 outback NetworkManager[2543]: [1472145174.4362] dns-mgr: Writing DNS information to /sbin/resolvconf Aug 25 13:12:54 outback dnsmasq[4348]: setting upstream servers from DBus Aug 25 13:12:54 outback NetworkManager[2543]: [1472145174.4430] manager: (ttyACM0): new Broadband device (/org/freedesktop/NetworkManager/Devices/4) Aug 25 13:12:54 outback NetworkManager[2543]: [1472145174.4441] device (ttyACM0): state change: unmanaged -> unavailable (reason 'managed') [10 20 2] Aug 25 13:12:54 outback NetworkManager[2543]: [1472145174.4445] device (ttyACM0): modem state 'enabling' Aug 25 13:12:54 outback NetworkManager[2543]: [1472145174.4457] device (enp0s20u2): state change: deactivating -> disconnected (reason 'connection-removed') [110 30 38] 我通过以下命令禁用了ModemManager：
sudo systemctl disable ModemManager.service
然后重新启动。 从那时起，我随后的USB网络共享会议一直保持稳定。
我确定有一种方法可以为我的手机（LG G3）正确配置ModemManager，但我目前不需要串口调制解调器，所以这种方法对我有用。
对我来说，这个命令有效：
sudo systemctl stop ModemManager.service
使用disable而不是stop不起作用。 然后我重新打开NetworkManager：
sudo NetworkManager