Estou usando o Kubuntu 14.04 Recentemente instalei atualizações (incluindo uma atualização do kernel) usando o Muon Update Manager. Agora meu adaptador Wi-fi não está funcionando.
Espero que parte dessa saída ajude:
$ sudo lshw -C rede
*-network UNCLAIMED
description: Network controller
product: QCA9565 / AR9565 Wireless Network Adapter
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:01:00.0
version: 01
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress cap_list
configuration: latency=0
resources: memory:d0400000-d047ffff memory:d0480000-d048ffff
lsmod
Module Size Used by
b43 396480 0
bcma 52320 1 b43
ssb 62352 1 b43
pci_stub 12622 1
vboxpci 23194 0
vboxnetadp 25670 0
vboxnetflt 27613 0
vboxdrv 339502 3 vboxnetadp,vboxnetflt,vboxpci
bnep 19624 2
rfcomm 69509 8
binfmt_misc 17468 1
nls_iso8859_1 12713 1
asix 38924 0
usbnet 43952 1 asix
mii 13934 2 asix,usbnet
hid_sensor_incl_3d 13267 0
hid_sensor_gyro_3d 13267 0
hid_sensor_rotation 13387 0
hid_sensor_als 13177 0
hid_sensor_magn_3d 13267 0
hid_sensor_accel_3d 13280 0
hid_sensor_trigger 13134 12 hid_sensor_gyro_3d,hid_sensor_incl_3d,hid_sensor_accel_3d,hid_sensor_rotation,hid_sensor_als,hid_sensor_magn_3d
industrialio_triggered_buffer 12882 6 hid_sensor_gyro_3d,hid_sensor_incl_3d,hid_sensor_accel_3d,hid_sensor_rotation,hid_sensor_als,hid_sensor_magn_3d
kfifo_buf 13432 1 industrialio_triggered_buffer
industrialio 54850 9 hid_sensor_trigger,hid_sensor_gyro_3d,industrialio_triggered_buffer,hid_sensor_incl_3d,hid_sensor_accel_3d,hid_sensor_rotation,hid_sensor_als,kfifo_buf,hid_sensor_magn_3d
hid_sensor_iio_common 14309 6 hid_sensor_gyro_3d,hid_sensor_incl_3d,hid_sensor_accel_3d,hid_sensor_rotation,hid_sensor_als,hid_sensor_magn_3d
uvcvideo 81073 0
videobuf2_vmalloc 13216 1 uvcvideo
videobuf2_memops 13362 1 videobuf2_vmalloc
videobuf2_core 59104 1 uvcvideo
v4l2_common 15681 1 videobuf2_core
videodev 153793 3 uvcvideo,v4l2_common,videobuf2_core
hid_sensor_hub 19877 8 hid_sensor_trigger,hid_sensor_gyro_3d,hid_sensor_incl_3d,hid_sensor_accel_3d,hid_sensor_rotation,hid_sensor_als,hid_sensor_magn_3d,hid_sensor_iio_common
media 21903 2 uvcvideo,videodev
intel_rapl 18783 0
intel_powerclamp 18823 0
coretemp 13441 0
kvm_intel 143630 0
kvm 452096 1 kvm_intel
crct10dif_pclmul 14307 0
crc32_pclmul 13133 0
ghash_clmulni_intel 13230 0
cryptd 20359 1 ghash_clmulni_intel
ath9k 141379 0
joydev 17393 0
ath3k 17427 0
btusb 32497 0
ath9k_common 25638 1 ath9k
bluetooth 446409 23 bnep,ath3k,btusb,rfcomm
ath9k_hw 446521 2 ath9k_common,ath9k
serio_raw 13483 0
ath 29006 3 ath9k_common,ath9k,ath9k_hw
6lowpan_iphc 18702 1 bluetooth
mac80211 652777 2 b43,ath9k
snd_hda_codec_hdmi 47548 1
hid_multitouch 17419 0
snd_hda_codec_conexant 23109 1
snd_hda_codec_generic 69011 1 snd_hda_codec_conexant
cfg80211 498458 5 b43,ath,ath9k_common,ath9k,mac80211
lpc_ich 21093 0
snd_soc_rt5640 93042 0
snd_soc_rl6231 13037 1 snd_soc_rt5640
shpchp 37047 0
snd_soc_core 200204 1 snd_soc_rt5640
snd_hda_intel 30469 3
snd_hda_controller 30228 1 snd_hda_intel
snd_compress 19200 1 snd_soc_core
snd_pcm_dmaengine 15172 1 snd_soc_core
snd_hda_codec 139719 5 snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_hda_codec_generic,snd_hda_intel,snd_hda_controller
snd_hwdep 17698 1 snd_hda_codec
snd_pcm 104112 7 snd_soc_rt5640,snd_soc_core,snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_controller,snd_pcm_dmaengine
mei_txe 19704 0
mei 87875 1 mei_txe
snd_seq_midi 13564 0
snd_seq_midi_event 14899 1 snd_seq_midi
snd_rawmidi 30876 1 snd_seq_midi
snd_seq 63074 2 snd_seq_midi_event,snd_seq_midi
ideapad_laptop 18278 0
sparse_keymap 13948 1 ideapad_laptop
snd_seq_device 14497 3 snd_seq,snd_rawmidi,snd_seq_midi
snd_timer 29562 2 snd_pcm,snd_seq
dw_dmac 12835 0
snd 79468 19 snd_soc_core,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_compress
dw_dmac_core 28390 1 dw_dmac
i2c_hid 18726 0
int3403_thermal 12967 0
soundcore 15047 2 snd,snd_hda_codec
intel_smartconnect 12637 0
i2c_designware_platform 12979 0
i2c_designware_core 14768 1 i2c_designware_platform
snd_soc_sst_acpi 13007 0
8250_dw 13551 0
spi_pxa2xx_platform 23079 0
pwm_lpss 13214 0
iosf_mbi 13541 0
mac_hid 13227 0
parport_pc 32741 0
ppdev 17671 0
lp 17759 0
parport 42348 3 lp,ppdev,parport_pc
hid_generic 12559 0
usbhid 52616 0
hid 110426 5 i2c_hid,hid_multitouch,hid_generic,hid_sensor_hub,usbhid
i915 906106 3
i2c_algo_bit 13413 1 i915
psmouse 106767 0
drm_kms_helper 61574 1 i915
drm 311018 5 i915,drm_kms_helper
ahci 34142 3
libahci 32424 1 ahci
video 20128 1 i915
sdhci_acpi 13351 0
sdhci 43685 1 sdhci_acpi
uname -a
Linux ... 3.16.0-49-generic #65~14.04.1-Ubuntu SMP Wed Sep 9 10:03:23 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
rfkill listar todos
0: ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
Também olhei para essa pergunta semelhante aqui mas parece ser para uma versão mais antiga do Ubuntu.
Execute o seguinte comando para desativar o driver errado que pode estar em conflito aqui:
sudo rmmod ath3k
Em seguida, execute o seguinte comando certifique-se de digitar todas as letras desse comando para não substituir o arquivo inteiro:
echo "blacklist ath3k" | sudo tee -a /etc/modprobe.d/blacklist.conf