Q: Wifi switching to inactive

Hi All,

I have a Late 2009 27-inch iMac (iMac 10.1) which i'm having some problems with. The wifi connection switches automatically to inactive. To rule out it being an OS problem I've reinstalled the machine and installed Maverick. I ran the same test connecting to another AP and encountered the same problem. When switching wifi on, it would connect to the wireless AP and a few seconds later it will disconnect from AP and turn inactive.

In the kernel log when making wifi interface active:

kernel[0]: flow_divert_kctl_disconnect (0): disconnecting group 1

configd[18]: [bootp_transmit.c:213] bootp_transmit(): bpf_write(en1) failed: Network is down (50)

configd[18]: DHCP en1: INIT transmit failed

kernel[0]: en1: BSSID changed to 5c:96:9d:65:38:1c

kernel[0]: AirPort: Link Up on en1

kernel[0]: 2830.278260: apple80211Request[10514] Unsupported ioctl 181

kernel[0]: en1: BSSID changed to 5c:96:9d:65:38:1c

kernel[0]: AirPort: RSN handshake complete on en1

kernel[0]: flow_divert_kctl_disconnect (0): disconnecting group 1

mDNSResponder[40]: mDNS_RegisterInterface: Frequent transitions for interface en1 (FE80:0000:0000:0000:D69A:20FF:FE56:7582)

UserEventAgent[11]: Captive: [CNInfoNetworkActive:1655] en1: SSID 'XXXXXXX' making interface primary (cache indicates network not captive)

UserEventAgent[11]: Captive: CNPluginHandler en1: Evaluating

UserEventAgent[11]: Captive: en1: Not probing 'XXXXXXX' (cache indicates not captive)

UserEventAgent[11]: Captive: CNPluginHandler en1: Authenticated

configd[18]: network changed: DNS* Proxy

configd[18]: network changed: v4(en1!:172.17.33.233) DNS+ Proxy+ SMB

Then a few (5 or 6) seconds later it switches to inactive:

kernel[0]: flow_divert_kctl_disconnect (0): disconnecting group 1

logind[44]: -[SessionManager getClient:withRole:inAuditSession:]:241: ERROR: No session dictionary for audit session 100000

logind[44]: _SMGetSessionAgent:73: ERROR: __SMGetClientForAuditSessionAgent failed 2

configd[18]: network changed: v4(en1:172.17.33.233) DNS! Proxy- SMB

logind[44]: -[SessionManager getClient:withRole:inAuditSession:]:241: ERROR: No session dictionary for audit session 100000

logind[44]: _SMGetSessionAgent:73: ERROR: __SMGetClientForAuditSessionAgent failed 2

configd[18]: network changed: v4(en1-:172.17.33.233) DNS-

kernel[0]: AirPort: Link Down on en1. Reason 8 (Disassociated because station leaving).

kernel[0]: en1: BSSID changed to 5c:96:9d:65:38:1c

kernel[0]: 2840.781143: setDISASSOC from ATH_INTERFACE_CLASS disconnectVap

UserEventAgent[11]: Captive: CNPluginHandler en1: Inactive

netbiosd[472]: network_reachability_changed : network is not reachable, netbiosd is shutting down

kernel[0]: 2841.490227: setDISASSOCIATE ****STA SYNC DISASSOC SUCCESS 

kernel[0]: 2841.490241: switchVap from 1 to 1

This is the Wifi's details:

Software Versions:

  CoreWLAN:          4.0 (400.45.1)

  CoreWLANKit:          3.0 (300.35)

  Menu Extra:          9.0 (900.34)

  System Information:          9.0 (900.8)

  IO80211 Family:          6.0 (600.34)

  Diagnostics:          3.0 (300.37)

  AirPort Utility:          6.3.2 (632.3)

  Interfaces:

en1:

  Card Type:          AirPort Extreme  (0x168C, 0x8F)

  Firmware Version:          Atheros 9280: 4.0.74.0-P2P

  MAC Address:          d4:9a:20:56:75:82

  Locale:          FCC

  Country Code:          US

  Supported PHY Modes:          802.11 a/b/g/n

  Supported Channels:          1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 36, 40, 44, 48, 52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 149, 153, 157, 161, 165

  Wake On Wireless:          Supported

  AirDrop:          Supported

  Status:          Network Service Inactive

Any help or suggestions would be appreciated.

Thanks