On Tue, 27 Sep 2011, Nick Nobody wrote:
I took your suggestion and stopped my network-manager daemon and
manually set up my wireless connection with wpa_supplicant and dhclient.
Amazingly the connection was rock-solid all day!

Now I have to figure out what network manager is doing that messes up
the connection :S

Hi Nick;

Glad you had success. I'm not sure what it is exactly NetworkManager (NM) does that messes up the connection. There is a network monitor menubar widget that I use to keep an eye on connectivity, and normally if I suspend my laptop and open it up elsewhere I have to ifdown/ifup it, possibly having to run dhclient again. The *idea* was for NM to avoid this hassle. I think instead of making a nice wrapper for WPASupp they went their own route entirely, different drivers, etc.

I have in the past looked for other gui replacements, just querying google now pulls up wicd. That might work for you. I know that years ago, around Ubuntu 5, they switched from whatever they used to NM, and having only ever really used Thinkpads with intel wireless I've always had issues with NM. I'm one of the few who doesn't mind 'iwlist scan | grep <blah>', then adding a new entry to wpa_supplicant.conf for that AP. I find the flexibility is unparalleled by any gui app (eg, windows, WHAT ARE YOU DOING!!!! DON'T CONNECT TO THAT ONE! UGH!!!!).

I hope you find a solution that works well for you, but remember you can always fall back on wpa_supplicant. If you're having keyboard-smashing moments trying to connect to a new AP (especially coming out of suspend), the following might help:
ifdown/up, make sure wpa_supplicant is set up to work with those scripts,
killall dhclient, then dhclient <wificard>,
make sure there aren't any other wpa_supplicant processes running that you forgot about...

I guess that's about it.
It might be worth sending an email to the Ubuntu people reminding them what tripe NM really is (although I got zero response when I gave feedback back in the Ubuntu5 era). Not sure why they're so tied to it when it's such crap, but that's life.
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