Eu tenho uma placa sem fio da Broadcom no meu laptop e a rede sem fio não está funcionando corretamente. Bem na frente do roteador, o sinal sem fio é de 70% e do outro lado da sala ele mal funciona e em outra sala ele se desconecta. Eu tenho os drivers e tudo mais. Estou executando o Ubuntu 11.10 64bit. Funciona perfeitamente no Windows 7. Alguém pode ajudar?
00:00.0 Host bridge [0600]: Advanced Micro Devices [AMD] Device [1022:1705]
00:01.0 VGA compatible controller [0300]: ATI Technologies Inc Device [1002:9649]
00:01.1 Audio device [0403]: ATI Technologies Inc Device [1002:1714]
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel
00:04.0 PCI bridge [0604]: Advanced Micro Devices [AMD] Device [1022:1709]
Kernel driver in use: pcieport
Kernel modules: shpchp
00:11.0 SATA controller [0106]: Advanced Micro Devices [AMD] Device [1022:7804]
Kernel driver in use: ahci
Kernel modules: ahci
00:12.0 USB Controller [0c03]: Advanced Micro Devices [AMD] Device [1022:7807] (rev 11)
Kernel driver in use: ohci_hcd
00:12.2 USB Controller [0c03]: Advanced Micro Devices [AMD] Device [1022:7808] (rev 11)
Kernel driver in use: ehci_hcd
00:13.0 USB Controller [0c03]: Advanced Micro Devices [AMD] Device [1022:7807] (rev 11)
Kernel driver in use: ohci_hcd
00:13.2 USB Controller [0c03]: Advanced Micro Devices [AMD] Device [1022:7808] (rev 11)
Kernel driver in use: ehci_hcd
00:14.0 SMBus [0c05]: Advanced Micro Devices [AMD] Device [1022:780b] (rev 13)
Kernel modules: i2c-piix4
00:14.2 Audio device [0403]: Advanced Micro Devices [AMD] Device [1022:780d] (rev 01)
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel
00:14.3 ISA bridge [0601]: Advanced Micro Devices [AMD] Device [1022:780e] (rev 11)
00:14.4 PCI bridge [0604]: Advanced Micro Devices [AMD] Device [1022:780f] (rev 40)
00:15.0 PCI bridge [0604]: Advanced Micro Devices [AMD] Device [1022:43a0]
Kernel driver in use: pcieport
Kernel modules: shpchp
00:15.1 PCI bridge [0604]: Advanced Micro Devices [AMD] Device [1022:43a1]
Kernel driver in use: pcieport
Kernel modules: shpchp
00:15.2 PCI bridge [0604]: Advanced Micro Devices [AMD] Device [1022:43a2]
Kernel driver in use: pcieport
Kernel modules: shpchp
00:18.0 Host bridge [0600]: Advanced Micro Devices [AMD] Device [1022:1700] (rev 43)
00:18.1 Host bridge [0600]: Advanced Micro Devices [AMD] Device [1022:1701]
00:18.2 Host bridge [0600]: Advanced Micro Devices [AMD] Device [1022:1702]
00:18.3 Host bridge [0600]: Advanced Micro Devices [AMD] Device [1022:1703]
00:18.4 Host bridge [0600]: Advanced Micro Devices [AMD] Device [1022:1704]
00:18.5 Host bridge [0600]: Advanced Micro Devices [AMD] Device [1022:1718]
00:18.6 Host bridge [0600]: Advanced Micro Devices [AMD] Device [1022:1716]
00:18.7 Host bridge [0600]: Advanced Micro Devices [AMD] Device [1022:1719]
01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 05)
Kernel driver in use: r8169
Kernel modules: r8169
07:00.0 Network controller [0280]: Broadcom Corporation Device [14e4:4727] (rev 01)
Kernel driver in use: wl
Kernel modules: wl
08:00.0 Class [ff00]: Realtek Semiconductor Co., Ltd. Device [10ec:5209] (rev 01)
Meu laptop HP daquela época tinha uma placa de rede sem fio R6168 (mostra via lspci), mas muitas vezes os drivers de rede R6169 são carregados. O R6169 funcionará, mas, dependendo do roteador, a conexão terá dificuldades e você verá a rede subir e descer muito, matando o throughput. Você terá a mesma incompatibilidade se tiver o cartão R8111.
Solução: instale o Drivers R6168 da Realtek . Eles não foram instalados automaticamente como deveriam.