Re: periodic_update(): Roamed ...

[Dan Williams <dcbw redhat com>]

On Mon, 2009-04-20 at 15:37 -0700, Howard Chu wrote:
> Howard Chu wrote:
> > This is probably more related to the ath9k driver, but I wanted to start here
> > in case anyone is familiar with it. I've been seeing this for the past couple
> > months, and I just now rebuilt NM fresh from git and it's still happening:
> 
> I seem to have ruled out the driver; doing a kill -9 on NetworkManager so it 
> doesn't have the opportunity to tear down the connection on exit, shows that 
> the wifi connection works perfectly once NetworkManager is gone. No 
> disassociation messages in dmesg, no pauses in ssh sessions, etc.

Don't rule out the driver.  Does the driver always return the currently
associated AP in the scan list?  If not, you might hit this.  And the
driver is being stupid, because of *course* the AP you're currently
connected to should always be in the scan list, unless you're no longer
connected to it.

The code in NM grabs the SSID & BSSID on a 6 second timer, and tries to
find that AP in the scan list.  If it can't find it (because the driver
didn't return that AP in the scan list) then it reports none.

If that's your problem, it's a driver problem.

Dan

> > Apr 17 15:40:05 violino NetworkManager:<info>   (wlan0): supplicant connection
> > state:  group handshake ->  completed
> > Apr 17 15:40:07 violino NetworkManager:<debug>  [1240008007.001860]
> > periodic_update(): Roamed from BSSID (none) ((none)) to 00:12:17:26:56:10
> > (HighlandSun)
> > Apr 17 15:40:25 violino NetworkManager:<debug>  [1240008025.003189]
> > periodic_update(): Roamed from BSSID 00:12:17:26:56:10 (HighlandSun) to (none)
> > ((none))
> > Apr 17 15:40:31 violino NetworkManager:<debug>  [1240008031.003983]
> > periodic_update(): Roamed from BSSID (none) ((none)) to 00:12:17:26:56:10
> > (HighlandSun)
> > Apr 17 15:41:25 violino NetworkManager:<debug>  [1240008085.002651]
> > periodic_update(): Roamed from BSSID 00:12:17:26:56:10 (HighlandSun) to (none)
> > ((none))
> > Apr 17 15:41:31 violino NetworkManager:<debug>  [1240008091.002730]
> > periodic_update(): Roamed from BSSID (none) ((none)) to 00:12:17:26:56:10
> > (HighlandSun)
> > Apr 17 15:44:25 violino NetworkManager:<debug>  [1240008265.002821]
> > periodic_update(): Roamed from BSSID 00:12:17:26:56:10 (HighlandSun) to (none)
> > ((none))
> >
> > The signal strength is consistently 80% or better, I'm only 10 feet from the
> > AP and have a clear line of sight to the antenna. What is this trying to tell me?
> >
> 
>