Eu tenho um laptop DELL Inspiron N5010 e tenho dual boot com o Windows 8.1 e Ubuntu 14.04. Eu tinha o Ubuntu 13.10 e agora eu instalei o 14.04 usando mídia ao vivo (eu não atualizei). Agora eu não consigo acessar a Internet via Wi-Fi. Ele está se conectando a wi-fi sem qualquer problema, mas apenas a Internet não funciona. No Windows 8.1, funciona bem.
Eu consigo acessar a Internet via modem serial USB, mas não via Wi-Fi.
Aqui estão algumas informações que eu posso coletar do laptop.
user@laptop:~$ cat /etc/lsb-release; uname -a
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.04
DISTRIB_CODENAME=trusty
DISTRIB_DESCRIPTION="Ubuntu 14.04 LTS"
Linux machine 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:11:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
user@laptop:~$ lspci -nnk | grep -iA2 net
12:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter [14e4:4727] (rev 01)
Subsystem: Dell Inspiron M5010 / XPS 8300 [1028:0010]
Kernel driver in use: wl
13:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 02)
Subsystem: Dell Device [1028:0447]
Kernel driver in use: r8169
user@laptop:~$ iwconfig
eth0 no wireless extensions.
lo no wireless extensions.
wlan0 IEEE 802.11abg ESSID:off/any
Mode:Managed Access Point: Not-Associated
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
user@laptop:~$ iwconfig
ppp0 no wireless extensions.
eth0 no wireless extensions.
lo no wireless extensions.
wlan0 IEEE 802.11abg ESSID:off/any
Mode:Managed Access Point: Not-Associated
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
user@laptop:~$ rfkill list all
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
1: brcmwl-0: Wireless LAN
Soft blocked: no
Hard blocked: no
2: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
user@laptop:~$ lsmod
Module Size Used by
ppp_deflate 12950 0
bsd_comp 12921 0
ppp_async 17413 1
crc_ccitt 12707 1 ppp_async
option 42468 3
usb_wwan 20429 1 option
usbserial 45014 9 option,usb_wwan
usb_storage 62209 0
bnep 19624 2
rfcomm 69160 8
joydev 17381 0
snd_hda_codec_hdmi 46207 1
snd_hda_codec_idt 54645 1
btusb 32412 0
bluetooth 395423 22 bnep,btusb,rfcomm
hid_generic 12548 0
usbhid 52616 0
hid 106148 2 hid_generic,usbhid
uvcvideo 80885 0
videobuf2_vmalloc 13216 1 uvcvideo
videobuf2_memops 13362 1 videobuf2_vmalloc
videobuf2_core 40664 1 uvcvideo
videodev 134688 2 uvcvideo,videobuf2_core
dell_wmi 12761 0
sparse_keymap 13948 1 dell_wmi
snd_hda_intel 52355 3
snd_hda_codec 192906 3 snd_hda_codec_hdmi,snd_hda_codec_idt,snd_hda_intel
snd_hwdep 13602 1 snd_hda_codec
snd_pcm 102099 3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
snd_page_alloc 18710 2 snd_pcm,snd_hda_intel
snd_seq_midi 13324 0
snd_seq_midi_event 14899 1 snd_seq_midi
dell_laptop 18168 0
dcdbas 14928 1 dell_laptop
snd_rawmidi 30144 1 snd_seq_midi
lib80211_crypt_tkip 17619 0
intel_powerclamp 14705 0
coretemp 13435 0
kvm_intel 143060 0
kvm 451511 1 kvm_intel
snd_seq 61560 2 snd_seq_midi_event,snd_seq_midi
psmouse 102222 0
wl 4207846 0
intel_ips 18664 0
serio_raw 13462 0
i915 783485 8
snd_seq_device 14497 3 snd_seq,snd_rawmidi,snd_seq_midi
lib80211 14381 2 wl,lib80211_crypt_tkip
cfg80211 484040 1 wl
lpc_ich 21080 0
snd_timer 29482 2 snd_pcm,snd_seq
mei_me 18627 0
snd 69238 17 snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_hda_codec_idt,snd_pcm,snd_seq,snd_raw midi,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_seq_midi
mei 82274 1 mei_me
drm_kms_helper 52758 1 i915
soundcore 12680 1 snd
drm 302817 4 i915,drm_kms_helper
i2c_algo_bit 13413 1 i915
wmi 19177 1 dell_wmi
video 19476 1 i915
mac_hid 13205 0
parport_pc 32701 0
ppdev 17671 0
lp 17759 0
parport 42348 3 lp,ppdev,parport_pc
ahci 25819 4
r8169 67581 0
libahci 32168 1 ahci
mii 13934 1 r8169
user@laptop:
Obrigado.
ifconfig ping 192.168.1.1 (possivelmente diferente) ping 8.8.8.8 Se as etapas acima forem bem-sucedidas, é provável que você esteja com problemas de DNS. Se alguma das etapas acima falhar, você deve se concentrar nessa parte da rede.