Rede wireless cai e não volta mais
Boa tarde a todos,
estou tendo um problema estranho ultimamente no meu notebook Turion X2
com 2GB de RAM, placa wireless Atheros AR5001 rev1 e Debian SID com o
Gnome, tudo roda bem até que a rede wireless dele se desconecta sem mais
nem menos e não se conecta mais, aparece a janela da rede pedindo a
senha do roteador wireless mas não adianta colocar a senha correta, dali
a pouco ele pede de novo destacando que a comunicação foi mau sucedida,
mesmo após um reboot ela não funciona, sou obrigado a desenergizar
totalmente e religá-lo para que a rede volte a funcionar.
Quando a placa "cai" eu posso observar pelo top que aparece uma
thread do kernel chamada "phy0" consumindo pelo menos 80% do processador
e que não é possível ser desativada, mesmo descarregando e recarregando
os drivers referentes à rede (ath5k, ath, mac80211, cfg80211) nada volta
a funcionar obrigando o desligamento de tudo.
Poderia-se pensar em defeito na placa wireless, o problema é que
esta placa já foi trocada recentemente e a original era uma Broadcom
BCM4311 que apresentava exatamente os mesmos problemas.
No momento que ocorre o problema vejo as seguintes mensagens pelo
dmesg :
[ 7351.165075] ath5k phy0: gain calibration timeout (2417MHz)
[ 7351.192510] ath5k phy0: noise floor calibration timeout (2417MHz)
[ 7351.274325] ath5k phy0: gain calibration timeout (2412MHz)
[ 7351.302715] ath5k phy0: noise floor calibration timeout (2412MHz)
[ 7351.630858] ath5k phy0: gain calibration timeout (2422MHz)
[ 7351.659390] ath5k phy0: noise floor calibration timeout (2422MHz)
[ 7351.741812] ath5k phy0: gain calibration timeout (2412MHz)
[ 7351.771569] ath5k phy0: noise floor calibration timeout (2412MHz)
[ 7352.093776] ath5k phy0: gain calibration timeout (2427MHz)
[ 7352.118763] ath5k phy0: noise floor calibration timeout (2427MHz)
[ 7356.346068] __ratelimit: 15 callbacks suppressed
[ 7356.346079] ath5k phy0: noise floor calibration timeout (2447MHz)
[ 7356.434842] ath5k phy0: gain calibration timeout (2412MHz)
[ 7356.463984] ath5k phy0: noise floor calibration timeout (2412MHz)
[ 7356.789552] ath5k phy0: gain calibration timeout (2452MHz)
[ 7356.817069] ath5k phy0: noise floor calibration timeout (2452MHz)
[ 7357.200088] ath5k phy0: gain calibration timeout (2412MHz)
[ 7357.525753] ath5k phy0: noise floor calibration timeout (2412MHz)
[ 7358.152382] ath5k phy0: gain calibration timeout (2457MHz)
[ 7358.477917] ath5k phy0: noise floor calibration timeout (2457MHz)
[ 7358.857219] ath5k phy0: gain calibration timeout (2412MHz)
[ 7361.449289] __ratelimit: 5 callbacks suppressed
[ 7361.449293] ath5k phy0: gain calibration timeout (2467MHz)
[ 7361.771818] ath5k phy0: noise floor calibration timeout (2467MHz)
[ 7362.221593] ath5k phy0: gain calibration timeout (2412MHz)
[ 7362.543871] ath5k phy0: noise floor calibration timeout (2412MHz)
[ 7363.169586] ath5k phy0: gain calibration timeout (2472MHz)
[ 7363.491817] ath5k phy0: noise floor calibration timeout (2472MHz)
[ 7363.941395] ath5k phy0: gain calibration timeout (2412MHz)
[ 7364.263888] ath5k phy0: noise floor calibration timeout (2412MHz)
[ 7364.889658] ath5k phy0: gain calibration timeout (2412MHz)
[ 7365.212192] ath5k phy0: noise floor calibration timeout (2412MHz)
[ 7367.712057] No probe response from AP 00:1c:df:98:dd:00 after 500ms,
disconnecting.
[ 7368.305503] ath5k phy0: gain calibration timeout (2412MHz)
[ 7368.628265] ath5k phy0: noise floor calibration timeout (2412MHz)
[ 7369.009507] ath5k phy0: gain calibration timeout (2417MHz)
[ 7369.332154] ath5k phy0: noise floor calibration timeout (2417MHz)
[ 7369.713630] ath5k phy0: gain calibration timeout (2422MHz)
[ 7370.036171] ath5k phy0: noise floor calibration timeout (2422MHz)
[ 7370.420184] ath5k phy0: gain calibration timeout (2427MHz)
[ 7370.746260] ath5k phy0: noise floor calibration timeout (2427MHz)
[ 7371.128821] ath5k phy0: gain calibration timeout (2432MHz)
[ 7371.454388] ath5k phy0: noise floor calibration timeout (2432MHz)
[ 7373.965225] __ratelimit: 7 callbacks suppressed
[ 7373.965229] ath5k phy0: gain calibration timeout (2452MHz)
[ 7374.287424] ath5k phy0: noise floor calibration timeout (2452MHz)
[ 7374.665315] ath5k phy0: gain calibration timeout (2457MHz)
[ 7374.987464] ath5k phy0: noise floor calibration timeout (2457MHz)
[ 7375.373225] ath5k phy0: gain calibration timeout (2462MHz)
[ 7375.695431] ath5k phy0: noise floor calibration timeout (2462MHz)
[ 7375.774633] ath5k phy0: gain calibration timeout (2467MHz)
[ 7375.801238] ath5k phy0: noise floor calibration timeout (2467MHz)
[ 7376.249750] ath5k phy0: gain calibration timeout (2472MHz)
[ 7376.572090] ath5k phy0: noise floor calibration timeout (2472MHz)
[ 7382.152855] __ratelimit: 2 callbacks suppressed
[ 7382.152859] ath5k phy0: gain calibration timeout (2412MHz)
[ 7382.475114] ath5k phy0: noise floor calibration timeout (2412MHz)
[ 7382.509991] ath5k phy0: noise floor calibration failed (2412MHz)
[ 7382.864095] ath5k phy0: gain calibration timeout (2417MHz)
[ 7383.186776] ath5k phy0: noise floor calibration timeout (2417MHz)
[ 7383.571681] ath5k phy0: gain calibration timeout (2422MHz)
[ 7383.894487] ath5k phy0: noise floor calibration timeout (2422MHz)
[ 7384.276790] ath5k phy0: gain calibration timeout (2427MHz)
[ 7384.599182] ath5k phy0: noise floor calibration timeout (2427MHz)
[ 7384.976720] ath5k phy0: gain calibration timeout (2432MHz)
[ 7387.804332] __ratelimit: 7 callbacks suppressed
[ 7387.804343] ath5k phy0: gain calibration timeout (2452MHz)
[ 7388.130575] ath5k phy0: noise floor calibration timeout (2452MHz)
[ 7388.210559] ath5k phy0: gain calibration timeout (2457MHz)
[ 7388.236784] ath5k phy0: noise floor calibration timeout (2457MHz)
[ 7388.613014] ath5k phy0: gain calibration timeout (2462MHz)
[ 7388.935246] ath5k phy0: noise floor calibration timeout (2462MHz)
[ 7389.313043] ath5k phy0: gain calibration timeout (2467MHz)
[ 7389.635880] ath5k phy0: noise floor calibration timeout (2467MHz)
[ 7390.085043] ath5k phy0: gain calibration timeout (2472MHz)
[ 7390.407468] ath5k phy0: noise floor calibration timeout (2472MHz)
[ 7393.556802] __ratelimit: 2 callbacks suppressed
[ 7393.556812] ath5k phy0: gain calibration timeout (2412MHz)
[ 7393.584255] ath5k phy0: noise floor calibration timeout (2412MHz)
[ 7393.694465] ath5k phy0: gain calibration timeout (2417MHz)
[ 7393.721954] ath5k phy0: noise floor calibration timeout (2417MHz)
[ 7394.104185] ath5k phy0: gain calibration timeout (2422MHz)
[ 7394.429573] ath5k phy0: noise floor calibration timeout (2422MHz)
[ 7394.813190] ath5k phy0: gain calibration timeout (2427MHz)
[ 7395.135664] ath5k phy0: noise floor calibration timeout (2427MHz)
[ 7395.512734] ath5k phy0: gain calibration timeout (2432MHz)
[ 7395.835030] ath5k phy0: noise floor calibration timeout (2432MHz)
[ 7398.644030] __ratelimit: 7 callbacks suppressed
[ 7398.644034] ath5k phy0: noise floor calibration timeout (2452MHz)
[ 7399.025217] ath5k phy0: gain calibration timeout (2457MHz)
[ 7399.347415] ath5k phy0: noise floor calibration timeout (2457MHz)
[ 7399.725477] ath5k phy0: gain calibration timeout (2462MHz)
[ 7400.047757] ath5k phy0: noise floor calibration timeout (2462MHz)
[ 7400.425266] ath5k phy0: gain calibration timeout (2467MHz)
[ 7400.747737] ath5k phy0: noise floor calibration timeout (2467MHz)
[ 7401.193604] ath5k phy0: gain calibration timeout (2472MHz)
[ 7401.515720] ath5k phy0: noise floor calibration timeout (2472MHz)
[ 7401.967208] ath5k phy0: gain calibration timeout (2412MHz)
[ 7407.096935] __ratelimit: 1 callbacks suppressed
[ 7407.096939] ath5k phy0: gain calibration timeout (2412MHz)
[ 7407.419432] ath5k phy0: noise floor calibration timeout (2412MHz)
[ 7407.797445] ath5k phy0: gain calibration timeout (2417MHz)
[ 7408.119754] ath5k phy0: noise floor calibration timeout (2417MHz)
[ 7408.497364] ath5k phy0: gain calibration timeout (2422MHz)
[ 7408.820089] ath5k phy0: noise floor calibration timeout (2422MHz)
[ 7409.200976] ath5k phy0: gain calibration timeout (2427MHz)
[ 7409.523326] ath5k phy0: noise floor calibration timeout (2427MHz)
[ 7409.552075] ath5k phy0: noise floor calibration timeout (2427MHz)
[ 7409.909578] ath5k phy0: gain calibration timeout (2432MHz)
[ 7412.729701] __ratelimit: 7 callbacks suppressed
[ 7412.729706] ath5k phy0: gain calibration timeout (2452MHz)
[ 7413.052062] ath5k phy0: noise floor calibration timeout (2452MHz)
[ 7413.432945] ath5k phy0: gain calibration timeout (2457MHz)
[ 7413.755885] ath5k phy0: noise floor calibration timeout (2457MHz)
[ 7414.137577] ath5k phy0: gain calibration timeout (2462MHz)
[ 7414.460170] ath5k phy0: noise floor calibration timeout (2462MHz)
[ 7414.841057] ath5k phy0: gain calibration timeout (2467MHz)
[ 7415.163835] ath5k phy0: noise floor calibration timeout (2467MHz)
[ 7415.613463] ath5k phy0: gain calibration timeout (2472MHz)
[ 7415.936008] ath5k phy0: noise floor calibration timeout (2472MHz)
Alguém já passou por este problema e tem a solução ?
Obrigado por qualquer ajuda
Flávio Alberto Lopes Soares
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