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I've had this problem since Ubuntu 11.10 (my first install) but I was able to get around this issue with this answer. After I installed Ubuntu 12.04.1 I tried to use the same fix as before but I couldn't get it to work. I've also tried a couple other different fixes I found around the web but they didn't work.

Basically here's what happens: I can see all the networks in my area. When I try to connect to one of them it never connects, it keeps disconnecting. After a little bit it asks for the password again but its already filled in correctly. If I hit okay it will do the exact same thing again.

So does anyone know how I can get this fixed?

INFO:

Computer: HP Pavilion dv6t-6b00 CTO Quad Edition Entertainment Notebook PC

Network Card: Intel® Centrino® Wireless-N 1000

OS: Ubuntu 12.04.1 (x64) dual booting with Windows 7 (x64) (*Not using Wubi*)

Wireless Card Driver: iwlwifi

UPDATE: I was about to reinstall but discovered the same issue happens on Ubuntu's live disc. I still was unable to fix it as before. I also tried the Xubuntu's live disc, and the same. Re installing the driver hasn't worked either.

UPDATE: I just tried out OpenSUSE and I'm having the same problem on that too. So it must be the kernel or one of it's drivers. I've done:

sudo rmmod xxxxxx
sudo modprobe xxxxxx

with iwlwifi and the other modules it uses (cfg80211 and mac80211) when my network wasn't working and it didn't do anything. I've made a bug report but I don't know if I'm gonna get a response (feels familiar). For now though I guess I'm forced to stick with Windows and dream about Linux :(. I'll keep looking for a way to fix it however.

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You are probably right, chances are that it is a bug. Linux has had more than a few problems with power management in the past, and no operating system is bug-free. Did you try running sudo ifconfig wlan0 down %% sudo ifconfig wlan0 up after suspend? –  InkBlend Sep 20 '12 at 2:36
    
@InkBlend: No, but I just tried now (after suspend) and it returns "%%: Unknown host" –  CyberOPS Sep 20 '12 at 2:53
    
@InkBlend, did you mean sudo ifconfig wlan0 down | sudo ifconfig wlan0 up? I tried this and seemed to run the command but made no response. It also made no effect. –  CyberOPS Sep 20 '12 at 3:02
    
When you put && in-between subsequent commands in bash, it only runs the second command (you can chain them, as in command1 && command2 && command3; command4) if the first completes successfully. ;, on the other hand, runs the second command regardless of whether the first one finishes. I don't know about |, as I have never encountered or used it before. –  InkBlend Sep 20 '12 at 3:13
    
@InkBlend: Cool, that's good to know. So what does %% do? Do you know why it didn't work for me? I'm just using Ubuntu's default shell. –  CyberOPS Sep 20 '12 at 3:27
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