Re: Trying to understand a kernel error



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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