Re: Trying to understand a kernel error

[Bill C Riemers <briemers redhat com>]

OK.  In the mean time, is there a way to keep the network manager from trying to connect to this network, other than using my airport mode switch?

Bill


On 10/24/2011 01:42 PM, Dan Williams wrote:
> On Mon, 2011-10-24 at 10:39 -0400, Bill C Riemers wrote:
> > Last night, I tried using wifi from the comfortinn I am staying at for the week, and I repeatedly received a kernel error:
> >
> > :WARNING: at drivers/net/wireless/iwlwifi/iwl-core.c:482 iwl_check_rxon_cmd+0x21
> > 1/0x21f [iwlagn]()
> >
> > Actually, looking at the respective line of code, it seems the module is complaining that channel number 6 is not a valid channel number...
> Probably best to persue this via kernel development lists actually, it's
> probably more of a kernel driver bug than an NM bug.  But some things
> that come to mind: perhaps the AP's 802.11d IE is telling your card that
> it cannot use some channels; often APs get this wrong.  Second, if this
> happens generally, it could be rfkill related.  But actually, your
> problem is apparently this block:
>
> 	if ((rxon->flags&  (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
> 			== (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) {
> 		IWL_WARN(priv, "CCK and short slot\n");
> 		errors |= BIT(7);
> 	}
>
> which is much more a kernel driver issue than an NM issue...  (0x40 = bit 7)
>
> Dan
>
> > Now here are the problems related to network manager:
> >     1. I have no way of aborting the connection attempt.  In fact now when I'm in the hotel I have to have the wifi switched off otherwise it automatically tries to connect to comfortinn, and generates the error repeatedly, blocking me from doing anything else.
> >     2. I'm not sure if the problem is a kernel bug, or network manager is passing invalid parameters.   There seems to be no way to open the connection in with the gnome interface to network manager.  I can only open the connection options for connections I'm actively connected to.   Is there a file on disk somewhere I can access, or an alternate UI?
> >
> > BTW. This problem seems related to the settings used for comfort inn, as I have never had problems connecting to any other wifi network.
> >
> > Regards,
> >
> > Bill
> >
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