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I'm a new user of Ubuntu, and connect to internet via Huawei e1550 dongle (USB modem). I also have a Windows OS like a second one (dual boot) on my laptop. So yesterday I login to Windows, do some stuff .. Then re-login to Linux and dongle started working again. So I do some stuff, then suspend the system and go sleeping.

This morning I open laptop, but it was no connection. I try to re-plugging dongle, reboot the Linux, suspending, but all that stuff was useless. So I reboot it once again, go to windows, connect to internet, then again reboot to Ubuntu and now dongle work again.

So, why is that strange? And what should I do to be able use dongle in Ubuntu without previously loading windows?


lsusb output for device when working as a modem is like that:

Bus 003 Device 002: ID 12d1:1001 Huawei Technologies Co., Ltd. E169/E620/E800 HSDPA Modem

when I re-plugging it, it stop working again and lsusb input change to this:

Bus 003 Device 012: ID 12d1:1446 Huawei Technologies Co., Ltd. E1552/E1800 (HSPA modem)

So it makes me once again reload to Windows and then go back to Ubuntu to be able to connect to Internet.

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  • Can you provide output from lsusb, for this device? eg. What changes with the USB device connected, or not connected. Also, does this change immediately after you connect the device? – david6 Apr 1 '14 at 6:46
  • Hi David. Please, check my updates. – Ph0en1x Apr 1 '14 at 7:52
  • Have you loaded non-free firmware support? sudo apt-get install linux-firmware-nonfree – david6 Apr 1 '14 at 8:56
  • No, I do not install it - should I do that? And how it could help - I check this package - it's a bunch of drivers. Maybe I could install something standalone? – Ph0en1x Apr 1 '14 at 10:36
  • This provides 'firmware' to load to the USB modem, and not having this available may be causing your problems. Look at output from dmesg. There may be error messages that confirm this. – david6 Apr 3 '14 at 9:15

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