#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                       |  
-----------------------------------------+----------------------------------
Comment (by [EMAIL PROTECTED]):

 good news ... finally ... YES !!!!

 I installed subversion, checked out the latest trunk version,

 make clean; make all; make reinstall

 Reboot

 And it worked ! I'm writing this entry over the WiFi link :)
 The Transmit Power seems to be stable high (17 dBm), maybe other changes
 also helped solve the problem.

 Just posting this back to let people know how 'easy' it is to fix this
 annoying issue :)

 Geert

 Some details :

 #athstats
 {{{
 204 tx management frames
 15 long on-chip tx retries
 185 tx frames with no ack marked
 855 tx frames with short preamble
 1 rx failed due to bad CRC
 434 periodic calibrations
 rssi of last ack: 26
 rssi of last rcv: 26
 3 switched default/rx antenna
 Antenna profile:
 [1] tx      886 rx     5265
 [2] tx       17 rx       15
 }}}

 #iwconfig
 {{{
 ath0      IEEE 802.11g  ESSID:"Clarion"
           Mode:Managed  Frequency:2.412 GHz  Access Point:
 00:0F:24:8C:26:20
           Bit Rate:11 Mb/s   Tx-Power=17 dBm   Sensitivity=1/1
           Retry:off   RTS thr:off   Fragment thr:off
           Encryption key:off
           Power Management:off
           Link Quality=26/70  Signal level=-60 dBm  Noise level=-86 dBm
           Rx invalid nwid:6  Rx invalid crypt:0  Rx invalid frag:0
           Tx excessive retries:0  Invalid misc:0   Missed beacon:0
 }}}

 # iwlist ath0 txpower
 {{{
 ath0      8 available transmit-powers :
           0 dBm         (1 mW)
           5 dBm         (3 mW)
           7 dBm         (5 mW)
           9 dBm         (7 mW)
           11 dBm        (12 mW)
           13 dBm        (19 mW)
           15 dBm        (31 mW)
           17 dBm        (50 mW)
           Current Tx-Power=17 dBm       (50 mW)
 }}}

 #grep -r . /proc/sys/dev/{wifi0,ath}/*
 {{{
 /proc/sys/dev/wifi0/ackrate:0
 /proc/sys/dev/wifi0/acktimeout:48
 /proc/sys/dev/wifi0/countrycode:0
 /proc/sys/dev/wifi0/ctstimeout:48
 /proc/sys/dev/wifi0/debug:0
 /proc/sys/dev/wifi0/diversity:1
 /proc/sys/dev/wifi0/fftxqmin:3
 /proc/sys/dev/wifi0/ledpin:0
 /proc/sys/dev/wifi0/regdomain:98
 /proc/sys/dev/wifi0/rxantenna:1
 /proc/sys/dev/wifi0/slottime:9
 /proc/sys/dev/wifi0/softled:1
 /proc/sys/dev/wifi0/txantenna:0
 /proc/sys/dev/wifi0/txintrperiod:5
 /proc/sys/dev/wifi0/xrpollcount:32
 /proc/sys/dev/wifi0/xrpollperiod:100
 /proc/sys/dev/ath/calibrate:1
 /proc/sys/dev/ath/countrycode:0
 /proc/sys/dev/ath/debug:0
 /proc/sys/dev/ath/hal/swba_backoff:0
 /proc/sys/dev/ath/hal/sw_beacon_response_time:10
 /proc/sys/dev/ath/hal/dma_beacon_response_time:2
 /proc/sys/dev/ath/outdoor:0
 /proc/sys/dev/ath/xchanmode:1
 }}}

 good news ... finally ... YES !!!!

 Installed subversion, checked out the latest trunk version,

 make clean; make all; make reinstall

 Reboot

 And it worked ! I'm writing this entry over the WiFi link :)
 The Transmit Power seems to be consistently high (17 dBm now, 50 mW),
 maybe other changes also helped solve the problem.

 Just posting this back to let people know how 'easy' it is to fix this
 annoying issue :)

 Geert

 Some details :

 #athstats
 {{{
 204 tx management frames
 15 long on-chip tx retries
 185 tx frames with no ack marked
 855 tx frames with short preamble
 1 rx failed due to bad CRC
 434 periodic calibrations
 rssi of last ack: 26
 rssi of last rcv: 26
 3 switched default/rx antenna
 Antenna profile:
 [1] tx      886 rx     5265
 [2] tx       17 rx       15
 }}}

 #iwconfig
 {{{
 ath0      IEEE 802.11g  ESSID:"Clarion"
           Mode:Managed  Frequency:2.412 GHz  Access Point:
 00:0F:24:8C:26:20
           Bit Rate:11 Mb/s   Tx-Power=17 dBm   Sensitivity=1/1
           Retry:off   RTS thr:off   Fragment thr:off
           Encryption key:off
           Power Management:off
           Link Quality=26/70  Signal level=-60 dBm  Noise level=-86 dBm
           Rx invalid nwid:6  Rx invalid crypt:0  Rx invalid frag:0
           Tx excessive retries:0  Invalid misc:0   Missed beacon:0
 }}}

 # iwlist ath0 txpower
 {{{
 ath0      8 available transmit-powers :
           0 dBm         (1 mW)
           5 dBm         (3 mW)
           7 dBm         (5 mW)
           9 dBm         (7 mW)
           11 dBm        (12 mW)
           13 dBm        (19 mW)
           15 dBm        (31 mW)
           17 dBm        (50 mW)
           Current Tx-Power=17 dBm       (50 mW)
 }}}

 #grep -r . /proc/sys/dev/{wifi0,ath}/*
 {{{
 /proc/sys/dev/wifi0/ackrate:0
 /proc/sys/dev/wifi0/acktimeout:48
 /proc/sys/dev/wifi0/countrycode:0
 /proc/sys/dev/wifi0/ctstimeout:48
 /proc/sys/dev/wifi0/debug:0
 /proc/sys/dev/wifi0/diversity:1
 /proc/sys/dev/wifi0/fftxqmin:3
 /proc/sys/dev/wifi0/ledpin:0
 /proc/sys/dev/wifi0/regdomain:98
 /proc/sys/dev/wifi0/rxantenna:1
 /proc/sys/dev/wifi0/slottime:9
 /proc/sys/dev/wifi0/softled:1
 /proc/sys/dev/wifi0/txantenna:0
 /proc/sys/dev/wifi0/txintrperiod:5
 /proc/sys/dev/wifi0/xrpollcount:32
 /proc/sys/dev/wifi0/xrpollperiod:100
 /proc/sys/dev/ath/calibrate:1
 /proc/sys/dev/ath/countrycode:0
 /proc/sys/dev/ath/debug:0
 /proc/sys/dev/ath/hal/swba_backoff:0
 /proc/sys/dev/ath/hal/sw_beacon_response_time:10
 /proc/sys/dev/ath/hal/dma_beacon_response_time:2
 /proc/sys/dev/ath/outdoor:0
 /proc/sys/dev/ath/xchanmode:1
 }}}

-- 
Ticket URL: <http://madwifi.org/ticket/1343#comment:38>
madwifi.org <http://madwifi.org/>
Multiband Atheros Driver for Wireless Fidelity
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