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I have Ubuntu 14.04 LTS and Lenovo Thinkpad Edge E430. I have great problems with some networks. Some networks work fine, like my Android hotspot, but unfortunately among the networks with problems are my home network and school network.

The problems:

  • Trying to connect lasts very long, is mostly unsuccessful, showing "Disconnected: network" or "Disconnected: ". Sometimes I need to restart Wireless, sometimes entire Networking, sometimes I even need to reboot the system to make it connect.
  • When connected, after a while (sometimes hours, sometimes 10 sec) all communication stops. ping 192.168.1.1 unsuccessful, ping google.com unknown host. When this happens, I have to manually disconnect and reconnect, where I often crash into the first problem and in the end I have to reboot.

This is very, very frustrating. This problem was there and gone and back for a long time, over several Ubuntu versions, but now it is very present and causes a lot of trouble. Lenovo offers no wifi driver for Ubuntu. Could this be because I dropped my laptop a year back in its bag, when the shoulder strap broke?

What should I try? Thanks.

Radovan Bezak
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2 Answers2

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I have a Lenovo e420, which has the same wireless chip. I use a variety of different networks (lots of traveling), and while I've experienced the same thing as you in other versions, I do not experience it anymore (maybe once every other month, and reconnecting from the panel is fine). I'm using 14.04, with no wireless fixes or additional drivers.

Here's a gotcha - is it possible that you're hitting the F9 button without holding Fn? This shuts down the wireless hardware, but Ubuntu doesn't seem to notice (other than there being no internet anymore :) )

Alternately, try 14.04.

horkers
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Disabling the power management for wifi as shown in the links below solves the problem:

Link 1 Link 2

Community
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Harris
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