#301: D-Link AWG-530 on Ubuntu Breezy
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  Reporter:  anonymous        |       Owner:       
      Type:  defect           |      Status:  new  
  Priority:  major            |   Milestone:       
 Component:  madwifi: driver  |     Version:  trunk
Resolution:                   |    Keywords:       
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Comment (by anonymous):

 On your first point:

 I switched out of the Gnome x11 GUI, logged in to the first console and
 did:

      ~$ ifdown ath0

 got the same message as above, i.e.

      There is already a pid file /var/run/dhclient.ath0.pid ..........

 the did:

      ~$ wlanconfig ath0 destroy

 Followed by:

      ~$ wlanconfig ath0 create wlandev wifi0 wlanmode monitor

 I got on the last screen (a few screens went zipping by - could not
 capture and nothing appeared in the System Log files):

      {{{
         Call trace:
         ath_vap_create+0x34b/0x455 [ath_pci]
         ieee80211_media_change+0x0/0x8d [wlan]
         ieee80211_media_status=0x0/0xab [wlan]
         ieee80211_ioctl_create_vap=0=d3/0x10a [wlan]
         ath_ioctl+0x0e0/0xfa [ath_pci]
         dev_ifsioc+0x40d/0x419
         dev_ioctl+0x317/0x3a5
         do_ioctl+0x26/0x4e
         vfs_ioctl+0x172/0x17f
         sys_ioctl+0x46/0x60
         sysenter_past_esp+0x54/0x75
         code: 20 56 e8 4a fa ...........
         kernel panic - not syncing: Fatal exception in interrupt
         }}}

 On your second point: if I follow your suggestion, it works !

 Now I did a few more experiments. If I comment out the pre-up in
 /etc/network/interfaces , reboot, then create a STA VAP, it works as
 expected. Now if I do ifdown ath0 and wlanconfig ath0 destroy to destroy
 the STA VAP, followed by:

      wlanconfig ath0 create wlandev wifi0 wlanmode sta

 to recreate a STA VAP, I get kernel panic. So the problem is not specific
 to monitor mode but to creating a VAP after destroying one. This is
 beginning to look more and more like Ticket 269 reported by someone else
 for the same wireless card.

-- 
Ticket URL: <http://madwifi.org/ticket/301>
MadWifi <http://madwifi.org/>
Multiband Atheros Driver for Wireless Fidelity

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