On 05/02/12 11:47, Arend van Spriel wrote:
On 02/04/2012 06:02 PM, Frank A. Kingswood wrote:
On a new (Samsung 305U1A) laptop with BRCM4313 wireless I have not been
able to use the wireless at all, although occasionally a flicker of life
can be seen in it.
"iwconfig scan" usually fails to report more than one access point.
Disabling the local AP makes it show up a different one, suggesting it
is actually able to see it but somewhere fails to pass the data along.
Could you sent me the output of 'iwconfig scan' or better 'iw scan'?
What is the SSID of the 'local AP'?
Thanks for picking this up.
Full current dmesg is at http://pastebin.com/6yV0AgA1 which does not
have a kernel panic but has brcmsmac debugging enabled.
The syslog has some NM messages:
Feb 5 22:38:21 ceres NetworkManager[1372]: <warn> Activation
(wlan0/wireless): association took too long.
Feb 5 22:38:21 ceres NetworkManager[1372]: <info> (wlan0): device state
change: config -> need-auth (reason 'none') [50 60 0]
Feb 5 22:38:21 ceres NetworkManager[1372]: <warn> Activation
(wlan0/wireless): asking for new secrets
Feb 5 22:38:21 ceres NetworkManager[1372]: <info> (wlan0): supplicant
interface state: authenticating -> disconnected
Feb 5 22:38:21 ceres NetworkManager[1372]: <warn> Couldn't disconnect
supplicant interface: This interface is not connected.
Feb 5 22:38:32 ceres dbus[1351]: [system] Activating service
name='org.freedesktop.PackageKit' (using servicehelper)
Feb 5 22:38:32 ceres dbus[1351]: [system] Successfully activated
service 'org.freedesktop.PackageKit'
Feb 5 22:40:27 ceres NetworkManager[1372]: <warn> No agents were
available for this request.
Feb 5 22:40:27 ceres NetworkManager[1372]: <info> (wlan0): device state
change: need-auth -> failed (reason 'no-secrets') [60 120 7]
Feb 5 22:40:27 ceres NetworkManager[1372]: <warn> Activation (wlan0)
failed for access point (002257217de0)
Feb 5 22:40:27 ceres NetworkManager[1372]: <info> Marking connection
'002257217de0 - Home' invalid.
Feb 5 22:40:27 ceres NetworkManager[1372]: <warn> Activation (wlan0)
failed.
Feb 5 22:40:27 ceres NetworkManager[1372]: <info> (wlan0): device state
change: failed -> disconnected (reason 'none') [120 30 0]
Feb 5 22:40:27 ceres NetworkManager[1372]: <info> (wlan0): deactivating
device (reason 'none') [0]
Feb 5 22:40:27 ceres NetworkManager[1372]: <info> Policy set 'Wired
connection 1' (eth0) as default for IPv4 routing and DNS.
Feb 5 22:40:27 ceres NetworkManager[1372]: <info> Policy set 'Wired
connection 1' (eth0) as default for IPv4 routing and DNS.
On the Samsung the scan only finds my local AP. With that AP off
yesterday it found a neighbour's AP.
Another laptop finds 13 APs, the next one down is at -88dBm.
$ iw dev wlan0 scan
BSS 00:22:57:21:7d:e0 (on wlan0)
TSF: 73342264677 usec (0d, 20:22:22)
freq: 2462
beacon interval: 333
capability: ESS Privacy ShortSlotTime (0x0411)
signal: -47.00 dBm
last seen: 316 ms ago
SSID: 002257217de0
Supported rates: 1.0* 2.0* 5.5* 11.0* 9.0 18.0 36.0 54.0
DS Parameter set: channel 11
Extended supported rates: 6.0 12.0 24.0 48.0
Country: GB Environment: Indoor/Outdoor
Channels [1 - 11] @ 16 dBm
TIM: DTIM Count 0 DTIM Period 1 Bitmap Control 0x0 Bitmap[0] 0x0
ERP: Barker_Preamble_Mode
HT capabilities:
Capabilities: 0x11ee
HT20/HT40
SM Power Save disabled
RX HT20 SGI
RX HT40 SGI
TX STBC
RX STBC 1-stream
Max AMSDU length: 3839 bytes
DSSS/CCK HT40
Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
Minimum RX AMPDU time spacing: 4 usec (0x05)
HT RX MCS rate indexes supported: 0-15, 32
HT TX MCS rate indexes are undefined
HT operation:
* primary channel: 11
* secondary channel offset: below
* STA channel width: any
* RIFS: 0
* HT protection: 20 MHz
* non-GF present: 1
* OBSS non-GF present: 0
* dual beacon: 0
* dual CTS protection: 0
* STBC beacon: 0
* L-SIG TXOP Prot: 0
* PCO active: 0
* PCO phase: 0
Extended capabilities: HT Information Exchange Supported
RSN: * Version: 1
* Group cipher: CCMP
* Pairwise ciphers: CCMP
* Authentication suites: PSK
* Capabilities: PreAuth (0x0001)
WMM: * Parameter version 1
* BE: CW 15-1023, AIFSN 3
* BK: CW 15-1023, AIFSN 7
* VI: CW 7-15, AIFSN 2, TXOP 3008 usec
* VO: acm CW 3-7, AIFSN 2, TXOP 1504 usec
Fiddling with NetworkManager produces this kernel panic:
What does 'Fiddling with NetworkManager' mean exactly?
Hard to say :-)
I was trying to get NM to first find and then connect to the AP. This is
not really reproducable, sorry, it took perhaps a dozen attempts.
Frank
--
------------------------------------------------------------------------
Frank A. Kingswood frank@xxxxxxxxxxxxxxxxxxxxxxxxxx
Cambridge, United Kingdom +44-7545-209 100
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