Aqui está uma nova ideia. Por favor, obtenha uma conexão Ethernet com fio temporária, abra um terminal e faça:
sudo apt-get install linux-firmware-nonfree
Desanexe a ethernet, reinicie e deixe-nos ouvir seu relatório.
O laptop é o Acer Aspire 5710z com 12.04
aqui é o lspci
00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)
00:1b.0 Audio device: Intel Corporation NM10/ICH7 Family High Definition Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 1 (rev 02)
00:1c.2 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 3 (rev 02)
00:1c.3 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 4 (rev 02)
00:1d.0 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #1 (rev 02)
00:1d.1 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #2 (rev 02)
00:1d.2 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #3 (rev 02)
00:1d.3 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #4 (rev 02)
00:1d.7 USB controller: Intel Corporation NM10/ICH7 Family USB2 EHCI Controller (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02)
00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 02)
00:1f.2 SATA controller: Intel Corporation 82801GBM/GHM (ICH7-M Family) SATA Controller [AHCI mode] (rev 02)
00:1f.3 SMBus: Intel Corporation NM10/ICH7 Family SMBus Controller (rev 02)
04:00.0 Ethernet controller: Broadcom Corporation NetLink BCM5787M Gigabit Ethernet PCI Express (rev 02)
05:00.0 Network controller: Broadcom Corporation BCM4311 802.11b/g WLAN (rev 01)
06:00.0 FLASH memory: ENE Technology Inc ENE PCI Memory Stick Card Reader Controller
06:00.1 SD Host controller: ENE Technology Inc ENE PCI SmartMedia / xD Card Reader Controller
06:00.2 FLASH memory: ENE Technology Inc Memory Stick Card Reader Controller
06:00.3 FLASH memory: ENE Technology Inc ENE PCI Secure Digital / MMC Card Reader Controller
depois sudo lspci -nnk -s 05: 00.0
05:00.0 Network controller [0280]: Broadcom Corporation BCM4311 802.11b/g WLAN [14e4:4311] (rev 01)
Subsystem: AMBIT Microsystem Corp. Device [1468:0422]
Kernel driver in use: b43-pci-bridge
Kernel modules: ssb
então
annette@annette-Aspire-5710Z:~$ sudo rfkill list all
0: acer-wireless: Wireless LAN
Soft blocked: no
Hard blocked: no
annette@annette-Aspire-5710Z:~$
e por que não
annette@annette-Aspire-5710Z:~$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:1b:38:23:58:93
inet addr:192.168.178.56 Bcast:192.168.178.255 Mask:255.255.255.0
inet6 addr: fe80::21b:38ff:fe23:5893/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:388530 errors:0 dropped:0 overruns:0 frame:0
TX packets:205406 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:564817042 (564.8 MB) TX bytes:17587353 (17.5 MB)
Interrupt:18
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:12307 errors:0 dropped:0 overruns:0 frame:0
TX packets:12307 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1012956 (1.0 MB) TX bytes:1012956 (1.0 MB)
Espero que isso lhe dê um começo.
Estou disposto a fazer qualquer um e todos os métodos que funcionaram para você antes ... atualmente estou baixando 13.10 como uma última tentativa de reinicialização completa do sistema ou algo assim.
Aqui está uma nova ideia. Por favor, obtenha uma conexão Ethernet com fio temporária, abra um terminal e faça:
sudo apt-get install linux-firmware-nonfree
Desanexe a ethernet, reinicie e deixe-nos ouvir seu relatório.