no wifi no Ubuntu 15.04 [duplicado]

Question

Não consigo ver a opção WiFi no meu Ubuntu 15.04. O que devo fazer? Reverter o mais rápido possível

lspci -nnk | grep 0280 -A2 output: -

03:00.0 Network controller [0280]: Qualcomm Atheros Device [168c:0042] (rev 30)
Subsystem: Foxconn International, Inc. Device [105b:e09a]

saída da lista rfkill: -

0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
1: acer-wireless: Wireless LAN
Soft blocked: no
Hard blocked: no

    dmesg | grep ath
[    9.545199] ath10k_pci 0000:03:00.0: pci irq msi-x interrupts 8 irq_mode 0 reset_mode 0
[   10.029684] ath10k_pci 0000:03:00.0: Direct firmware load for ath10k/cal-pci-0000:03:00.0.bin failed with error -2
[   10.029701] ath10k_pci 0000:03:00.0: Direct firmware load for ath10k/QCA9377/hw1.0/firmware-5.bin failed with error -2
[   10.029704] ath10k_pci 0000:03:00.0: could not fetch firmware file 'ath10k/QCA9377/hw1.0/firmware-5.bin': -2
[   10.029711] ath10k_pci 0000:03:00.0: Direct firmware load for ath10k/QCA9377/hw1.0/firmware-4.bin failed with error -2
[   10.029713] ath10k_pci 0000:03:00.0: could not fetch firmware file 'ath10k/QCA9377/hw1.0/firmware-4.bin': -2
[   10.029719] ath10k_pci 0000:03:00.0: Direct firmware load for ath10k/QCA9377/hw1.0/firmware-3.bin failed with error -2
[   10.029721] ath10k_pci 0000:03:00.0: could not fetch firmware file 'ath10k/QCA9377/hw1.0/firmware-3.bin': -2
[   10.029726] ath10k_pci 0000:03:00.0: Direct firmware load for ath10k/QCA9377/hw1.0/firmware-2.bin failed with error -2
[   10.029728] ath10k_pci 0000:03:00.0: could not fetch firmware file 'ath10k/QCA9377/hw1.0/firmware-2.bin': -2
[   10.029733] ath10k_pci 0000:03:00.0: Direct firmware load for ath10k/QCA9377/hw1.0/firmware.bin failed with error -2
[   10.029735] ath10k_pci 0000:03:00.0: could not fetch firmware (-2)
[   10.029737] ath10k_pci 0000:03:00.0: could not fetch firmware files (-2)
[   10.029739] ath10k_pci 0000:03:00.0: could not probe fw (-2)

    

Answer 1

Seu dispositivo é coberto por padrão no Ubuntu 15.10, embora exija firmware que não seja instalado por padrão, mas que possa ser adicionado posteriormente. Minha primeira sugestão é instalar 15.10.

Se, no entanto, você optar por permanecer com o 15.04, poderá compilar o driver mais recente. Com uma conexão de internet temporária em funcionamento, por ethernet, conectado ou qualquer outro meio possível, abra um terminal e faça:

sudo apt-get update
sudo apt-get install linux-headers-generic build-essential
cd ~
wget https://www.kernel.org/pub/linux/kernel/projects/backports/2015/11/20/backports-20151120.tar.gz
tar -zxvf backports-20151120.tar.gz
cd ~/backports-20151120
make defconfig-ath10k
make
sudo make install

Reinicie e deixe-nos ver:

dmesg | grep ath

Isso nos informará qual firmware está faltando e eu alterarei minha resposta para mostrar como fazer o download e instalá-lo.