Nos Fóruns do Ubuntu, eles recomendam baixar o driver da Realtek, por exemplo. link
Eu tenho placa sem fio Realtek RTL8191SEvB no Ubuntu 10.10:
$ lspci -v | grep Network
03:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8191SEvB Wireless LAN Controller (rev 10)
Quando carrego seu driver , de acordo com o Network Manager, ele às vezes pisca com uma lista de redes disponíveis, mas continua desabilitando a si mesmo ou permanece desconectado. Então, não consigo me conectar a nenhuma rede wi-fi (o que resulta em frustração).
O driver está carregado:
$ lsmod
Module Size Used by
r8192se_pci 509932 0
Parece normal:
$ sudo lshw -C network
*-network
description: Wireless interface
product: RTL8191SEvB Wireless LAN Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlan0
version: 10
serial: 1c:65:9d:60:c7:7a
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl819xSE driverversion=0019.1207.2010 firmware=63 latency=0 link=no multicast=yes wireless=802.11bgn
resources: irq:17 ioport:2000(size=256) memory:f0500000-f0503fff
Configurado:
$ sudo iwconfig wlan0
wlan0 802.11bgn Nickname:"rtl8191SEVA2"
Mode:Managed Frequency=2.412 GHz Access Point: Not-Associated
Bit Rate:130 Mb/s
Retry:on RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=10/100 Signal level=0 dBm Noise level=-100 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
não está bloqueado:
$ rfkill list all
0: tpacpi_bluetooth_sw: Bluetooth
Soft blocked: no
Hard blocked: yes
No entanto, algo está acontecendo com ele:
$ dmesg
[ 6485.948668] InitializeAdapter8190(): ==++==> Turn off RF for RfOffReason(1073741824) ----------
[ 6486.062666] rtl8192_SetWirelessMode(), wireless_mode:10, bEnableHT = 1
[ 6486.062671] InitializeAdapter8192SE(): Set MRC settings on as default!!
[ 6486.062675] HW_VAR_MRC: Turn on 1T1R MRC!
[ 6486.064091] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 6486.248761] rtl8192_SetWirelessMode(), wireless_mode:10, bEnableHT = 1
[ 6486.248771] InitializeAdapter8192SE(): Set MRC settings on as default!!
[ 6486.248776] HW_VAR_MRC: Turn on 1T1R MRC!
[ 6486.580083] GPIOChangeRF - HW Radio OFF
[ 6486.610085] ============>sync_scan_hurryup out
[ 6486.623814] ================>r8192_wx_set_scan(): hwradio off
[ 6486.830484] =========>r8192_wx_set_essid():hw radio off,or Rf state is eRfOff, return
Então, alguém sabe onde o problema pode estar?
Nos Fóruns do Ubuntu, eles recomendam baixar o driver da Realtek, por exemplo. link