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I've been using Ubuntu for a long time, no problems until a few days ago. I was installing the Arduino IDE through the Ubuntu Software Center and suddenly the installation got stuck displaying "Applying changes". The system won't respond, so I had to shutdown my laptop using the manual interruptor (cutting off the current).

After starting again, a message appeared:

"The network connection has been closed".

From that moment until now, I haven't been able to connect to wifi or bluetooth. I've tried a lot of workarounds I found on forums, but nothing worked. When I click on the networks icon of the top bar I can see the button "Activate wireless" is gone.

I'm sending this question through windows, this is my level of desperation. Any help will be great, thanks in advance guys!


Edit:

I add this output in order to give more info:

http://i1.minus.com/jbggjoeXkU4FZY.png

Javier.

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  • Does a wired connection still work? What do you have available in the network menu? What is the brand of your Wireless adapter?
    – Fabby
    Dec 4, 2014 at 12:59
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    @Fabby 1) A wired connection doesn't work. Any connection is working anymore, but they have always done until a few days ago. 2) This is what I have available in my network menu (in spanish, translated after the capture): i3.minus.com/jbtaJ0df9e0zvY.png "No network devices available VPN connections Enable network (Enable wireless is missing) Connection information Edit connections" 3) My Wireless brand is Atheros. I hope you can help me further. Thanks
    – Light
    Dec 4, 2014 at 18:00
  • Go to a terminal and type ´ifconfig´, lspci | grep --ignore-case net & lsusb | grep --ignore-case wi and post the output back into your question. Io parlo l'Italiano e io capisco la spagnola un po
    – Fabby
    Dec 4, 2014 at 19:02
  • Added the image on the question. Please, @Fabby would you vote it up so I can use images in my questions and not just links (not enough rep). Thanks!
    – Light
    Dec 6, 2014 at 13:41
  • i had a similar problem with my 12.04 install , atheros AR9565 wireless, i added acpi=force irqpoll noapictime to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" to /etc/default/grub, it looks like this now GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=force irqpoll noapictimer"
    – younes
    Dec 6, 2014 at 13:46

1 Answer 1

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The only way to fix my situation I found after reading a lot of threads in different forums:

Reinstallation.

It worked, and it seems there is no other way (since trying to repair all drivers won't work).

Thanks you all guys for your answers.

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