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Subject: Re: iwlwifi unable to reconnect after suspend since v3.9-rc1
From: Johannes Berg <johannes@sipsolutions.net>
To: Alex Romosan <romosan@sycorax.lbl.gov>
Cc: linux-wireless@vger.kernel.org
Date: Wed, 27 Mar 2013 18:54:55 +0100
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On Wed, 2013-03-27 at 10:48 -0700, Alex Romosan wrote:
> Johannes Berg <johannes@sipsolutions.net> writes:
> 
> > On Tue, 2013-03-26 at 13:52 -0700, Alex Romosan wrote:
> >> since v3.9-rc1 i have been unable to reconnect to my access point. the
> >> access point is a netgear n600 and the my card is a Centrino Advanced-N
> >> 6205 [Taylor Peak] (rev 34). the last kernel that worked was 3.8. when i
> >> boot up the laptop the connection is established but if i bring down the
> >> network with ifdown then i cannot reconnect. this is what i see in the
> >> logs:
> >> 
> >>  iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
> >>  iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
> >>  wlan0: authenticate with xx:xx:xx:xx:xx:xx
> >>  wlan0: send auth to xx:xx:xx:xx:xx:xx (try 1/3)
> >>  wlan0: send auth to xx:xx:xx:xx:xx:xx (try 2/3)
> >>  wlan0: send auth to xx:xx:xx:xx:xx:xx (try 3/3)
> >>  wlan0: authentication with xx:xx:xx:xx:xx:xx timed out
> >
> > Btw, since we're looking at the timeout handling -- do you have a
> > version of this log with timestamps on each line?
> 
> i do but the timestamp is the same on all the lines:
> 
> Mar 27 09:43:14 trinculo kernel: iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
> Mar 27 09:43:14 trinculo kernel: iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
> Mar 27 09:43:16 trinculo kernel: wlan0: authenticate with xx:xx:xx:xx:xx:xx
> Mar 27 09:43:16 trinculo kernel: wlan0: send auth to xx:xx:xx:xx:xx:xx (try 1/3)
> Mar 27 09:43:16 trinculo kernel: wlan0: send auth to xx:xx:xx:xx:xx:xx (try 2/3)
> Mar 27 09:43:16 trinculo kernel: wlan0: send auth to xx:xx:xx:xx:xx:xx (try 3/3)
> Mar 27 09:43:16 trinculo kernel: wlan0: authentication with xx:xx:xx:xx:xx:xx timed out

Ok, well, that doesn't tell us all that much since you don't have
sub-second timestamps. Maybe you can enable printk timestamps:

echo Y > /sys/module/printk/parameters/time

johannes