Date: Fri, 18 Apr 2008 14:51:04 +0200 (CEST)
From: Pierre Frenkiel <pierre.frenkiel@apc.univ-paris7.fr>
To: linux-wireless@vger.kernel.org
Subject: ath5k phy0: noise floor calibration timeout 
Message-ID: <Pine.LNX.4.64.0804181435480.16108@apcnb28.in2p3.fr> (sfid-20080418_141634_753355_B12A449E)
MIME-Version: 1.0
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Sender: linux-wireless-owner@vger.kernel.org

hi,
I have a 3-com PCCARD, with the AR5413 chipset
I installed 2 days ago compat-wireless-2.6.tar.bz2, on Ubuntu Gutsy,
and everything seemed to work.
I just had in the log 2 or 3 messages:

    ath5k phy0: noise floor calibration timeout

but yesterday, when rebooting, I got a huge number of such messages(more
than 100 in the log file), with also

    ath5k phy0: ath5k_chan_set: unable to reset channel
    ath0: failed to set freq to 2422 MHz for scan
    ath0: failed to restore operational channel after scan

and the boot froze. I then removed my PCCARD,
and after poweroff/poweron, I could boot normally.

It seems to be fixed now, as I have no more this problem after
re-inserting the card. 
But as I did nothing, I would like to know what might happen: 
If this happened once, there is no reason why this would not happen an
other time.

Pierre