#823: cannot associate immediately after a scan
----------------------------+-----------------------------------------------
Reporter: [EMAIL PROTECTED] | Owner:
Type: defect | Status: new
Priority: major | Milestone:
Component: madwifi: other | Version:
Keywords: | Patch_attached: 0
----------------------------+-----------------------------------------------
This is causing problems for Gentoo users in
bugs.gentoo.org/show_bug.cgi?id=143698.
test case:
{{{
iwlist ath0 scan ; sleep 0 ; iwconfig ath0 essid atropa ; iwconfig
}}}
Run this test case for various values for the argument of sleep. On my
system (madwifi 0.9.2, 00:08.0 Ethernet controller: Atheros
Communications, Inc. AR5212 802.11abg NIC (rev 01), kernel 2.6.17.8),
anything less than about 1.9 will cause it to not associate with my AP.
Anything larger than 1.9 is ok.
Examples:
{{{
aconite ~ # iwlist ath0 scan ; sleep 1.7 ; iwconfig ath0 essid atropa ;
iwconfig
ath0 Scan completed :
Cell 01 - Address: 00:0C:41:1A:82:A0
ESSID:"REDSCAPE1"
Mode:Master
Frequency:2.437 GHz (Channel 6)
Quality=21/94 Signal level=-74 dBm Noise level=-95
dBm
Encryption key:on
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
Extra:bcn_int=100
Cell 02 - Address: 00:14:BF:38:CA:3B
ESSID:"atropa"
Mode:Master
Frequency:2.462 GHz (Channel 11)
Quality=41/94 Signal level=-54 dBm Noise level=-95
dBm
Encryption key:on
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s; 6 Mb/s; 9 Mb/s
12 Mb/s; 48 Mb/s
Extra:bcn_int=100
Cell 03 - Address: 00:0F:3D:BB:46:70
ESSID:"martin"
Mode:Master
Frequency:2.437 GHz (Channel 6)
Quality=3/94 Signal level=-92 dBm Noise level=-95
dBm
Encryption key:on
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 22 Mb/s
Extra:bcn_int=100
Cell 04 - Address: 00:14:51:74:BA:9D
ESSID:"wibble"
Mode:Master
Frequency:2.462 GHz (Channel 11)
Quality=94/94 Signal level=-1 dBm Noise level=-95
dBm
Encryption key:off
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
48 Mb/s; 54 Mb/s
Extra:bcn_int=100
lo no wireless extensions.
eth0 no wireless extensions.
wifi0 no wireless extensions.
ath0 IEEE 802.11g ESSID:"atropa"
Mode:Managed Frequency:2.437 GHz Access Point: Not-Associated
Bit Rate:1 Mb/s Tx-Power:18 dBm Sensitivity=0/3
Retry:off RTS thr:off Fragment thr:off
Encryption key:8AA8-66B1-31C3-F33B-C628-1DDD-C6 Security
mode:open
Power Management:off
Link Quality=35/94 Signal level=-60 dBm Noise level=-95 dBm
Rx invalid nwid:78443 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
}}}
And the simultaneous results from iwevent
{{{
aconite ~ # iwevent
Waiting for Wireless Events from interfaces...
11:36:04.611354 ath0 Set ESSID:"atropa"
11:36:04.664416 ath0 Scan request completed
}}}
Now with a larger sleep:
{{{
aconite ~ # iwlist ath0 scan ; sleep 2 ; iwconfig ath0 essid atropa ;
iwconfig
ath0 Scan completed :
Cell 01 - Address: 00:0C:41:1A:82:A0
ESSID:"REDSCAPE1"
Mode:Master
Frequency:2.437 GHz (Channel 6)
Quality=21/94 Signal level=-74 dBm Noise level=-95
dBm
Encryption key:on
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
Extra:bcn_int=100
Cell 02 - Address: 00:14:BF:38:CA:3B
ESSID:"atropa"
Mode:Master
Frequency:2.462 GHz (Channel 11)
Quality=39/94 Signal level=-56 dBm Noise level=-95
dBm
Encryption key:on
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s; 6 Mb/s; 9 Mb/s
12 Mb/s; 48 Mb/s
Extra:bcn_int=100
Cell 03 - Address: 00:0F:3D:BB:46:70
ESSID:"martin"
Mode:Master
Frequency:2.437 GHz (Channel 6)
Quality=4/94 Signal level=-91 dBm Noise level=-95
dBm
Encryption key:on
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 22 Mb/s
Extra:bcn_int=100
Cell 04 - Address: 00:14:51:74:BA:9D
ESSID:"wibble"
Mode:Master
Frequency:2.462 GHz (Channel 11)
Quality=94/94 Signal level=-1 dBm Noise level=-95
dBm
Encryption key:off
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
48 Mb/s; 54 Mb/s
Extra:bcn_int=100
lo no wireless extensions.
eth0 no wireless extensions.
wifi0 no wireless extensions.
ath0 IEEE 802.11g ESSID:"atropa"
Mode:Managed Frequency:2.462 GHz Access Point:
00:14:BF:38:CA:3B
Bit Rate:36 Mb/s Tx-Power:18 dBm Sensitivity=0/3
Retry:off RTS thr:off Fragment thr:off
Encryption key:8AA8-66B1-31C3-F33B-C628-1DDD-C6 Security
mode:open
Power Management:off
Link Quality=40/94 Signal level=-55 dBm Noise level=-95 dBm
Rx invalid nwid:78588 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
}}}
and the corresponding iwevents:
{{{
aconite ~ # iwevent
Waiting for Wireless Events from interfaces...
11:38:12.656124 ath0 Scan request completed
11:38:12.870322 ath0 New Access Point/Cell address:Not-Associated
11:38:12.870700 ath0 Set ESSID:"atropa"
11:38:12.874106 ath0 New Access Point/Cell address:00:14:BF:38:CA:3B
}}}
Again, see the Gentoo bug bugs.gentoo.org/show_bug.cgi?id=143698 (sorry I
can't post this as a proper URL because I get an anti-spam message, you'll
have to copy-n-paste it) for more information.
--
Ticket URL: <http://madwifi.org/ticket/823>
MadWifi <http://madwifi.org/>
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