It is known that some Huawei hardware doen't work properly without the proprietary driver. You have to check whether your dongle gets detected like this after waking up from sleep. In the above image my Huawei dongle has been successfully detected. Execute this command in Terminal and plug in your dongle: You can clearly identify whether the dongle is detected or not by reading the Linux kernel ring buffer.
(If you don't have an optical disc drive, change sr1 to sr0) Wait few seconds, until the dongle is prepared, and flip it into modem mode: If not you have to try following commands in your Terminal: In most cases the dongle is re-detected automatically. Here I'm explaining common workarounds you have.Īfter waking up from sleep, you have to usually remove and plug the 3G dongle back. Some Huawei dongles simply switches off when you put your laptop into sleep mode.
This is a common problem of Huawei dongles and there is no clearly recognized fix for this. (see )įeb 13 09:54:08 laptop NetworkManager: (wlan0): now managedįeb 13 09:54:08 laptop NetworkManager: (wlan0): device state change: unmanaged -> unavailable (reason 'managed') įeb 13 09:54:08 laptop NetworkManager: (wlan0): bringing up device.įeb 13 09:54:08 laptop NetworkManager: (wlan0): deactivating device (reason 'managed') Īnybody any idea what the network manager is doing there and why? Looking into the mode-switching issue, but since the stick is not listed at all instead of being listed as storage, this seems not to be the issue here)įeb 13 09:54:08 laptop NetworkManager: Unmanaged Device found state CONNECTED forced. Sudo /etc/init.d/networking restart (is depricated) Three different USB ports on the laptop plus using a USB-hub that is powered with an own power source Sometimes (in most cases) a reboot helps.Ĭould it be an issue with USB? Maybe something with not providing enough power? (Not as a normal USB stick, too - I am aware about the mode-switching issue in Linux, but this doesn't seem to be the problem here.) Lsusb does not find the device in the latter case. Sometimes, after the plug-in, a return from suspend mode, or just after a disconnect, it's not starting to blink or just seldomly and the connection does not appear again. It sometimes start to blink and the mobile broadband connection appears in network manager. E169/E620/E800 HSDPA Modem) is sometimes detected and sometimes not. My mobile-broadband USB stick ( lsusb: 12d1:1001 Huawei Technologies Co., Ltd.
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