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I am running Ubuntu 11.10 on a Compaq Presario CQ57 and I need to enable my wireless hardware switch to use it. I have a wireless key (F12) which shows a light when the switch is active (it is now red). How would I go about enabling in Ubuntu? I've tried pressing F12 normally and with Fn, none work.

2 Answers 2

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This a common problem with that model.

Here is solution

http://www.techytalk.info/ubuntu-ppas/ralink-wireless/


Linked question :

Wireless not recognised on a Compaq Presario CQ57

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  • I received an error on the second command saying no such package.
    – Harris6310
    Apr 6, 2012 at 20:30
  • I have found out that pressing F12 does switch the switch, but wireless is disabled anyway. Am I missing a driver?
    – Harris6310
    Apr 6, 2012 at 21:56
  • There is a step missing in that instruction.Run sudo apt-get update after adding ppa
    – Web-E
    Apr 7, 2012 at 6:22
  • Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference.
    – fossfreedom
    Apr 7, 2012 at 8:12
  • Okay, I have fully solved the hardware switch problem. But it is still displaying that it is disabled.
    – Harris6310
    Apr 7, 2012 at 13:54
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This might help: https://bbs.archlinux.org/viewtopic.php?pid=1413379#p1413379

Try to unload the wmi module.

For example, this worked for me on HP Mini 100e:

sudo rmmod hp-wmi    
sudo rmmod wmi

after which I could immediately connect to wi-fi.

(Find your corresponding module using lsmod)

If this works for you, you might want to blacklist the wmi module from /etc/modprobe.d/ -- see link for instructions.

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