ath5k phy0: noise floor calibration timeout

ath5k phy0: noise floor calibration timeout

[Pierre Frenkiel]

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

Re: ath5k phy0: noise floor calibration timeout

[Dan Williams]

On Fri, 2008-04-18 at 14:51 +0200, Pierre Frenkiel wrote:
> 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

I also get this all the time with a 5006E, and ath5k takes quite a lot
(30%) of CPU most of the time.  Haven't tried to track it down yet.
Anyone have ideas about the root cause of the problem?

Dan

> 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
> --
> To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: ath5k phy0: noise floor calibration timeout

[Nick Kossifidis]

2008/4/18, Dan Williams <dcbw@redhat.com>:
> On Fri, 2008-04-18 at 14:51 +0200, Pierre Frenkiel wrote:
>  > 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
>
>
> I also get this all the time with a 5006E, and ath5k takes quite a lot
>  (30%) of CPU most of the time.  Haven't tried to track it down yet.
>  Anyone have ideas about the root cause of the problem?
>
>
>  Dan
>
>  > 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
>  > --
>  > To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
>  > the body of a message to majordomo@vger.kernel.org
>  > More majordomo info at  http://vger.kernel.org/majordomo-info.html
>
>  --
>  To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
>  the body of a message to majordomo@vger.kernel.org
>  More majordomo info at  http://vger.kernel.org/majordomo-info.html
>

It seems that sometimes noise floor calibration takes longer than
usual. I'll check it out and come up with a patch asap ;-)

-- 
GPG ID: 0xD21DB2DB
As you read this post global entropy rises. Have Fun ;-)
Nick

Re: ath5k phy0: noise floor calibration timeout

[Dan Williams]

On Fri, 2008-04-18 at 17:51 +0300, Nick Kossifidis wrote:
> 2008/4/18, Dan Williams <dcbw@redhat.com>:
> > On Fri, 2008-04-18 at 14:51 +0200, Pierre Frenkiel wrote:
> >  > 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
> >
> >
> > I also get this all the time with a 5006E, and ath5k takes quite a lot
> >  (30%) of CPU most of the time.  Haven't tried to track it down yet.
> >  Anyone have ideas about the root cause of the problem?
> >
> >
> >  Dan
> >
> >  > 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
> >  > --
> >  > To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
> >  > the body of a message to majordomo@vger.kernel.org
> >  > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >
> >  --
> >  To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
> >  the body of a message to majordomo@vger.kernel.org
> >  More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >
> 
> It seems that sometimes noise floor calibration takes longer than
> usual. I'll check it out and come up with a patch asap ;-)

Happy to test patches.  AR5413 802.11agb NIC (rev 01).  168c:001b,
subsys 10cf:1329.

Dan