[ltp] Re: spotty wireless with t520 w/Intel wifi and xubuntu
Steven J. Owens
Wed, 5 Mar 2014 19:32:24 +0000
On Thu, Oct 24, 2013 at 09:57:15PM +0300, Michael Livshin wrote:
> It's NetworkManager. OK, it's the combination of NetworkManager and the
> wireless driver. Even though Intel wireless cards are supposed to be
> well-supported in Linux. Go figure.
So I finally decided to give this a shot, since my wireless started
being spotty as hell recently.
For several weeks now, it has silently died and forgotten about my AP
- the essid doesn't show up in the list, although "sudo iwlist wlan0
scan" showed the essid. I had to disable/reenable networking to get
it to start working again. It happened every 45 minutes or so.
Then something changed a week or two ago, still not sure what, but it
became damn-near-unusable, I had to disable/reenable every five minutes.
So I decided to try your suggested patch. Unfortunately, patching
nm-device-wifi.c didn't truly solve the problem. I guess it has helped
a bit - it's back to 45 minutes or so.
I was pretty exhaustive in capturing everything I did, so if people
want to try this themselves, I've documented the whole process at:
And... hey, there goes ubuntu, updating and overwriting
network-manager, even as I type this :-) (I haven't yet added the hold
command to dpkg as Sean Leonard suggested). Oh well, it'll be easy
enough to reinstall my patched version.
Steven J. Owens
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