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My laptop is Dell Inspiron 5520, the wireless network is BCM43142 which doesn't work properly after upgrading to 15.10.

It works for a while and stop working without any error or notification, after a minutes or two or after disabling/enabling the network it start working again. This cycle never stops!

I'm suspicious that the problem was there before upgrading but I'm sure it got worse.

I've purged and reinstalled bcmwl-kernel-source but nothing changed.

How can I figure out the real problem?

Amir Karimi
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  • My computer has the same chip, but it stopped working altogether. I fixed it, so the answer may be at: http://askubuntu.com/questions/689174/ubuntu-15-10-no-wifi/689499#689499 This was a fix with the same chip, but a different computer. The chip stopped working, so it may not be the answer you are looking for. Again, this was for a chip that wasn't working at all, and yours seems to be working some. So, it may or may not be the answer. – Andrew Steele Oct 25 '15 at 11:52

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