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How do you prevent Network Manager from continually prompting for wireless password when it tries to reconnect after the connection temporarily drops?

Unlike this post, this happens for me without suspending. My wireless WPA2 connection might drop a couple times, and NM will automatically reconnect. However, eventually NM will start prompting for the password...which is already filled in. Clicking "Show password" confirms it's already the correct password, and clicking "connect" without changing anything also successfully connects.

Why is it doing this, and how do I stop it? It's driving me crazy. Wicd doesn't do this, but it has a lot of other problems, so I'd rather stick with NM if I could resolve this issue.

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Good question — this, coupled with less-then-stellar drivers, makes for some infuriating moments. Like leaving your PC on overnight and having to close about fifty such dialog boxes first thing in the morning. –  detly Jan 7 '12 at 9:49

2 Answers 2

up vote 1 down vote accepted

Try restarting the network manager:

sudo service network-manager restart
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This does not fix the problem. –  Cerin Oct 25 '11 at 12:54

May I suggest that you run in a terminal

nm-tool

That will give you a list of wireless access points that are in range, the frequency that they are transmitting on and the signal strength.

Your wireless access point/router could be using the same frequency as another access point and if they are at the same or of similar strength it could explain why your connection is dropping. It may also mean that network manager after failing to connect to your access is now trying to connect to this other one. And that is why it is asking for a password. You have the right password for your access point but not for the access point that network manager is trying to connect to.

You may need to enter your router's set up program and select a different channel or frequency.

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I'm pretty sure this isn't the problem. I was initially using a frequency in use by other networks. However, I switched to a frequency not in use, and was still repeatedly prompted for my password. –  Cerin Oct 15 '11 at 20:52
    
This doesn't answer the question. Besides, it happens even when the lost connection has nothing to do with the signal, or with trying to access another AP, like I mentioned in my comment above. –  detly Jan 30 '12 at 8:15

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