Eu tive esse problema no 12.10, resolvi-o excluindo o Kwalletmanager e excluindo a configuração Wireless alocada no KnetworkManager, depois de fazer isso funcionou muito bem
Isso começou a acontecer depois da atualização ... há cerca de dois dias.
Eu tenho um roteador Verizon FIOS (sem fio) ... e no momento em que me afasto do quarto (aproximadamente 20 pés de distância) onde ele está localizado, minha conexão sem fio cai ...
Eu colei minha saída do syslog abaixo. A linha inferior é que ele se desconecta e, em seguida, continua aparecendo uma caixa de diálogo de autenticação sem fio, falha ao conectar-se depois que eu insiro a senha e, eventualmente, descarta a conexão wifi.
Eu tenho visto muitos problemas de Wi-Fi relatados com a atualização 13.04 ... agradeço sua ajuda.
Note que com 12.10, isso aconteceria ocasionalmente (talvez uma vez por semana), mas parecia não haver correlação com a distância do roteador ... e eu reinicializaria para corrigi-lo. Mas com 13.04, é inutilizável.
saída lspci:
lspci | egrep -i "network|wireless|ethernet"
0a:00.0 Network controller: Ralink corp. Device 539b
0b:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168 PCI Express Gigabit Ethernet controller (rev 07)
saída lshw (para rede):
*-pci:3
description: PCI bridge
product: 7 Series/C210 Series Chipset Family PCI Express Root Port 4
vendor: Intel Corporation
physical id: 1c.3
bus info: pci@0000:00:1c.3
version: c4
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:19 memory:74500000-745fffff
*-network
description: Wireless interface
product: Ralink corp.
vendor: Ralink corp.
physical id: 0
bus info: pci@0000:0a:00.0
logical name: wlan0
version: 00
serial: 9c:2a:70:0b:81:5b
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rt2800pci driverversion=3.8.0-19-generic firmware=0.34 ip=192.168.1.28 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
resources: irq:19 memory:74500000-7450ffff
SYSLOG (a partir do momento em que me afasto, até solicitar a senha do wifi):
May 2 10:07:22 athena wpa_supplicant[1224]: wlan0: WPA: Group rekeying completed with 00:7f:28:52:65:b9 [GTK=CCMP]
May 2 10:07:25 wpa_supplicant[1224]: last message repeated 3 times
May 2 10:07:25 athena kernel: [ 2073.235743] wlan0: deauthenticated from 00:7f:28:52:65:b9 (Reason: 2)
May 2 10:07:25 athena wpa_supplicant[1224]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:7f:28:52:65:b9 reason=2
May 2 10:07:25 athena kernel: [ 2073.260107] cfg80211: Calling CRDA to update world regulatory domain
May 2 10:07:25 athena NetworkManager[1173]: <info> (wlan0): supplicant interface state: completed -> disconnected
May 2 10:07:25 athena kernel: [ 2073.265935] cfg80211: World regulatory domain updated:
May 2 10:07:25 athena kernel: [ 2073.265940] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
May 2 10:07:25 athena kernel: [ 2073.265944] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
May 2 10:07:25 athena kernel: [ 2073.265947] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
May 2 10:07:25 athena kernel: [ 2073.265949] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
May 2 10:07:25 athena kernel: [ 2073.265951] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
May 2 10:07:25 athena kernel: [ 2073.265954] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
May 2 10:07:25 athena kernel: [ 2073.266200] cfg80211: Calling CRDA for country: US
May 2 10:07:25 athena kernel: [ 2073.271606] cfg80211: Regulatory domain changed to country: US
May 2 10:07:25 athena kernel: [ 2073.271612] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
May 2 10:07:25 athena kernel: [ 2073.271618] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2700 mBm)
May 2 10:07:25 athena kernel: [ 2073.271623] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 1700 mBm)
May 2 10:07:25 athena kernel: [ 2073.271627] cfg80211: (5250000 KHz - 5330000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
May 2 10:07:25 athena kernel: [ 2073.271631] cfg80211: (5490000 KHz - 5600000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
May 2 10:07:25 athena kernel: [ 2073.271635] cfg80211: (5650000 KHz - 5710000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
May 2 10:07:25 athena kernel: [ 2073.271639] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 3000 mBm)
May 2 10:07:25 athena NetworkManager[1173]: <info> (wlan0): supplicant interface state: disconnected -> scanning
May 2 10:07:26 athena wpa_supplicant[1224]: wlan0: SME: Trying to authenticate with 00:7f:28:52:65:b9 (SSID='10177-2' freq=2437 MHz)
May 2 10:07:26 athena kernel: [ 2074.059525] wlan0: authenticate with 00:7f:28:52:65:b9
May 2 10:07:26 athena NetworkManager[1173]: <info> (wlan0): supplicant interface state: scanning -> authenticating
May 2 10:07:26 athena wpa_supplicant[1224]: wlan0: Trying to associate with 00:7f:28:52:65:b9 (SSID='10177-2' freq=2437 MHz)
May 2 10:07:26 athena kernel: [ 2074.074818] wlan0: send auth to 00:7f:28:52:65:b9 (try 1/3)
May 2 10:07:26 athena kernel: [ 2074.076306] wlan0: authenticated
May 2 10:07:26 athena kernel: [ 2074.078370] wlan0: associate with 00:7f:28:52:65:b9 (try 1/3)
May 2 10:07:26 athena NetworkManager[1173]: <info> (wlan0): supplicant interface state: authenticating -> associating
May 2 10:07:26 athena wpa_supplicant[1224]: wlan0: Associated with 00:7f:28:52:65:b9
May 2 10:07:26 athena kernel: [ 2074.085032] wlan0: RX AssocResp from 00:7f:28:52:65:b9 (capab=0x431 status=0 aid=7)
May 2 10:07:26 athena kernel: [ 2074.085155] wlan0: associated
May 2 10:07:26 athena kernel: [ 2074.085264] cfg80211: Calling CRDA for country: US
May 2 10:07:26 athena NetworkManager[1173]: <info> (wlan0): supplicant interface state: associating -> 4-way handshake
May 2 10:07:26 athena kernel: [ 2074.091115] cfg80211: Regulatory domain changed to country: US
May 2 10:07:26 athena kernel: [ 2074.091120] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
Eu tive esse problema no 12.10, resolvi-o excluindo o Kwalletmanager e excluindo a configuração Wireless alocada no KnetworkManager, depois de fazer isso funcionou muito bem