Date: Sun, 5 Dec 2010 09:34:46 +0100 From: Bernhard Schmidt <bschmidt@freebsd.org> To: Steve Kargl <sgk@troutmask.apl.washington.edu> Cc: freebsd-current@freebsd.org Subject: Re: wlan0 going UP/DOWN problem Message-ID: <201012050934.46566.bschmidt@freebsd.org> In-Reply-To: <20101205062103.GA63430@troutmask.apl.washington.edu> References: <20101205062103.GA63430@troutmask.apl.washington.edu>
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On Sunday 05 December 2010 07:21:03 Steve Kargl wrote: > It seems some recent change (as in the last 7-10 days) > has caused an instability in wlan0. Just a small > excerpt from /var/log/messages, > > Dec 4 18:54:16 laptop kernel: wlan0: link state changed to UP > Dec 4 19:11:16 laptop kernel: wlan0: link state changed to DOWN > Dec 4 19:11:16 laptop kernel: wlan0: link state changed to UP > Dec 4 19:19:46 laptop kernel: wlan0: link state changed to DOWN > Dec 4 19:19:46 laptop kernel: wlan0: link state changed to UP > Dec 4 19:37:01 laptop kernel: wlan0: link state changed to DOWN > Dec 4 19:37:01 laptop kernel: wlan0: link state changed to UP > Dec 4 19:45:31 laptop kernel: wlan0: link state changed to DOWN > Dec 4 19:45:31 laptop kernel: wlan0: link state changed to UP > Dec 4 19:54:01 laptop kernel: wlan0: link state changed to DOWN > Dec 4 19:54:01 laptop kernel: wlan0: link state changed to UP > Dec 4 20:11:16 laptop kernel: wlan0: link state changed to DOWN > Dec 4 20:11:16 laptop kernel: wlan0: link state changed to UP > Dec 4 20:19:46 laptop kernel: wlan0: link state changed to DOWN > Dec 4 20:19:46 laptop kernel: wlan0: link state changed to UP > Dec 4 20:36:46 laptop kernel: wlan0: link state changed to DOWN > Dec 4 20:36:46 laptop kernel: wlan0: link state changed to UP > Dec 4 20:45:16 laptop kernel: wlan0: link state changed to DOWN > Dec 4 20:45:16 laptop kernel: wlan0: link state changed to UP > Dec 4 20:53:46 laptop kernel: wlan0: link state changed to DOWN > Dec 4 20:53:46 laptop kernel: wlan0: link state changed to UP > > So, every 18 minutes the devices is going DOWN/UP. :-/ More details please. Which driver? How is that stuff configured? wpa_supplicant involved? Try running it with debug messages enabled. We need to figure out what entity is causing the device to go down/up, this can either be wpa_supplicant or net80211 (or a cronjob calling ifconfig down/up every 18 minutes ;). The appropriate debug options enabled (wlandebug 0xffffffff or wpa_supplicant with -dd) should reveal that. -- Bernhard
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