#1343: Atheros AR5212 has awful reception, trouble holding connections
-----------------------------------------+----------------------------------
Reporter: [EMAIL PROTECTED] | Owner:
Type: defect | Status: new
Priority: major | Milestone:
Component: madwifi: driver | Version: v0.9.3
Resolution: | Keywords: atheros, ath_pci,
sensitivity
Patch_attached: 0 |
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Comment (by [EMAIL PROTECTED]):
just after going 2 rooms aways from AP (perfect connectivity in Win XP)
I've manually set the txpower to 17 when being in different but no help,
still no proper connectivity.
And again (as seen when sitting next to the AP) it drops after some time
back to 8 ...
The stats when 'remote' :
{{{
#iwconfig
...
wifi0 no wireless extensions.
ath0 IEEE 802.11g ESSID:"linksys"
Mode:Managed Frequency:2.412 GHz Access Point:
00:12:17:xx:xx:xx
Bit Rate:1 Mb/s Tx-Power=17 dBm Sensitivity=1/1
Retry:off RTS thr:off Fragment thr:off
Encryption key:xxxxxxxxxxxxxxxxxxxxxxx Security
mode:restricted
Power Management:off
Link Quality=28/70 Signal level=-67 dBm Noise level=-95 dBm
Rx invalid nwid:212 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
...
}}}
again some stats :
{{{
# athstats
141 beacon miss interrupts
11627 tx management frames
6 tx encapsulation failed
285 tx failed due to too many retries
22298 long on-chip tx retries
6346 tx frames with no ack marked
487253 tx frames with short preamble
2816 tx frames with an alternate rate
67327 rx failed due to bad CRC
6476316 PHY errors
467144 OFDM timing
65 OFDM restart
6009107 CCK timing
68071 periodic calibrations
rssi of last ack: 28
rssi of last rcv: 30
435449 switched default/rx antenna
Antenna profile:
[1] tx 477909 rx 2300797
[2] tx 2674 rx 1437184
}}}
after some time NetworkManager reports the AP disconnect. The resulting
iwconfig :
{{{
ath0 IEEE 802.11g ESSID:"linksys"
Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated
Bit Rate:0 kb/s Tx-Power=8 dBm Sensitivity=1/1
Retry:off RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=0/70 Signal level=-95 dBm Noise level=-95 dBm
Rx invalid nwid:477 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
#iwconfig ath0 scan :
ath0 Scan completed :
Cell 01 - Address: 00:12:17:xx:xx:xx
ESSID:"linksys"
Mode:Master
Frequency:2.412 GHz (Channel 1)
Quality=32/70 Signal level=-63 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=50
...
}}}
Back sitting next to the AP :
{{{
# iwlist ath0 scan
ath0 Scan completed :
Cell 01 - Address: 00:12:17:xx:xx:xx
ESSID:"linksys"
Mode:Master
Frequency:2.412 GHz (Channel 1)
Quality=39/70 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=50
...
}}}
Anymore ideas/things I can try out ?
Thanks.
--
Ticket URL: <http://madwifi.org/ticket/1343#comment:36>
madwifi.org <http://madwifi.org/>
Multiband Atheros Driver for Wireless Fidelity
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