Seguiu as instruções dadas na url nameserver 127.0.1.1 no resolv.conf não vai embora! e comentou dns = dnsmasq em /etc/NetworkManager/NetworkManager.conf e seu funcionamento agora
Eu tenho conexão wi-fi e lan para meu pc, o wifi tem internet e o lan me conecta a outros PCs na rede doméstica.
Se eu desconectar / desconectar o lan, a internet funciona, mas quando o wifi e o lan estão conectados, a internet funciona momentaneamente e depois se desconecta. Não consigo abrir nenhum site, até o ping não funciona aqui, por exemplo "ping google.com" dá:
ping: unknown host google.com
Mas eu posso fazer o ping do ip na internet, por exemplo "ping 8.8.8.8" dá o seguinte:
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=56 time=110 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=56 time=98.4 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=56 time=101 ms
^C
--- 8.8.8.8 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 98.492/103.462/110.263/4.983 ms
A saída do script de informações sem fio é a seguinte:
########## wireless info START ##########
Report from: 01 Jan 2016 23:18 IST +0530
Booted last: 01 Jan 2016 22:31 IST +0530
Script from: 27 Sep 2015 00:34 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 14.04.3 LTS
Release: 14.04
Codename: trusty
##### kernel ############################
Linux 3.16.0-55-generic #74~14.04.1-Ubuntu SMP Tue Nov 17 10:16:12 UTC 2015 i686 athlon i686 GNU/Linux
Parameters: ro, quiet, splash, vt.handoff=7
##### desktop ###########################
Lubuntu
##### lspci #############################
00:07.0 Bridge [0680]: NVIDIA Corporation MCP61 Ethernet [10de:03ef] (rev a2)
Subsystem: ASUSTeK Computer Inc. Device [1043:8234]
Kernel driver in use: forcedeth
##### lsusb #############################
Bus 001 Device 002: ID 148f:5370 Ralink Technology, Corp. RT5370 Wireless Adapter
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
##### PCMCIA card info ##################
'pccardctl' is not installed (package "pcmciautils").
##### rfkill ############################
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
##### lsmod #############################
rt2800usb 26712 0
rt2x00usb 20041 1 rt2800usb
rt2800lib 83150 1 rt2800usb
rt2x00lib 48886 3 rt2x00usb,rt2800lib,rt2800usb
mac80211 563196 3 rt2x00lib,rt2x00usb,rt2800lib
cfg80211 422935 2 mac80211,rt2x00lib
crc_ccitt 12627 1 rt2800lib
mxm_wmi 12893 1 nouveau
wmi 18689 2 mxm_wmi,nouveau
##### interfaces ########################
auto lo
iface lo inet loopback
##### ifconfig ##########################
eth0 Link encap:Ethernet HWaddr <MAC 'eth0' [IF]>
inet addr:192.168.0.100 Bcast:192.168.0.127 Mask:255.255.255.128
inet6 addr: fe80::<IP6 'eth0' [IF]>/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:11067 errors:0 dropped:0 overruns:0 frame:0
TX packets:15850 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:770753 (770.7 KB) TX bytes:14862732 (14.8 MB)
wlan0 Link encap:Ethernet HWaddr <MAC 'wlan0' [IF]>
inet addr:192.168.1.102 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::<IP6 'wlan0' [IF]>/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2574 errors:0 dropped:0 overruns:0 frame:0
TX packets:2434 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:604557 (604.5 KB) TX bytes:350301 (350.3 KB)
##### iwconfig ##########################
lo no wireless extensions.
eth0 no wireless extensions.
wlan0 IEEE 802.11bgn ESSID:"Tata-Photon-Max-Wi-Fi-4994"
Mode:Managed Frequency:2.462 GHz Access Point: <MAC 'Tata-Photon-Max-Wi-Fi-4994' [AC1]>
Bit Rate=39 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=39/70 Signal level=-71 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:4 Invalid misc:4 Missed beacon:0
##### route #############################
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 wlan0
192.168.0.0 0.0.0.0 255.255.255.128 U 1 0 0 eth0
192.168.1.0 0.0.0.0 255.255.255.0 U 9 0 0 wlan0
##### resolv.conf #######################
nameserver 127.0.1.1
##### network managers ##################
Installed:
NetworkManager
Running:
root 1057 1 0 22:31 ? 00:00:00 NetworkManager
##### NetworkManager info ###############
NetworkManager Tool
State: connected (global)
- Device: eth0 [Wired connection 1] -------------------------------------------
Type: Wired
Driver: forcedeth
State: connected
Default: no
HW Address: <MAC 'eth0' [IF]>
Capabilities:
Carrier Detect: yes
Speed: 100 Mb/s
Wired Properties
Carrier: on
IPv4 Settings:
Address: 192.168.0.100
Prefix: 25 (255.255.255.128)
Gateway: 192.168.0.2
DNS: 192.168.0.2
- Device: wlan0 [Tata-Photon-Max-Wi-Fi-4994] ----------------------------------
Type: 802.11 WiFi
Driver: rt2800usb
State: connected
Default: yes
HW Address: <MAC 'wlan0' [IF]>
Capabilities:
Speed: 39 Mb/s
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points (* = current AP)
linksys: Infra, <MAC 'linksys' [AC3]>, Freq 2462 MHz, Rate 54 Mb/s, Strength 100 WPA WPA2
*Tata-Photon-Max-Wi-Fi-4994: Infra, <MAC 'Tata-Photon-Max-Wi-Fi-4994' [AC1]>, Freq 2462 MHz, Rate 54 Mb/s, Strength 53 WPA WPA2
IPv4 Settings:
Address: 192.168.1.102
Prefix: 24 (255.255.255.0)
Gateway: 192.168.1.1
DNS: 192.168.1.1
##### NetworkManager.state ##############
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true
##### NetworkManager.conf ###############
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq
no-auto-default=<MAC 'eth0' [IF]>,
[ifupdown]
managed=false
##### NetworkManager profiles ###########
[[/etc/NetworkManager/system-connections/Tata-Photon-Max-Wi-Fi-4994]] (600 root)
[connection] id=Tata-Photon-Max-Wi-Fi-4994 | type=802-11-wireless
[802-11-wireless] ssid=Tata-Photon-Max-Wi-Fi-4994 | mac-address=<MAC 'wlan0' [IF]>
[ipv4] method=auto
[ipv6] method=auto
##### iw reg get ########################
'iw' is not installed (package "iw").
##### iwlist channels ###################
lo no frequency information.
eth0 no frequency information.
wlan0 14 channels in total; available frequencies :
Channel 01 : 2.412 GHz
Channel 02 : 2.417 GHz
Channel 03 : 2.422 GHz
Channel 04 : 2.427 GHz
Channel 05 : 2.432 GHz
Channel 06 : 2.437 GHz
Channel 07 : 2.442 GHz
Channel 08 : 2.447 GHz
Channel 09 : 2.452 GHz
Channel 10 : 2.457 GHz
Channel 11 : 2.462 GHz
Channel 12 : 2.467 GHz
Channel 13 : 2.472 GHz
Channel 14 : 2.484 GHz
Current Frequency=2.462 GHz (Channel 11)
##### iwlist scan #######################
lo Interface doesn't support scanning.
eth0 Interface doesn't support scanning.
Channel occupancy:
1 APs on Frequency:2.412 GHz (Channel 1)
2 APs on Frequency:2.462 GHz (Channel 11)
wlan0 Scan completed :
Cell 01 - Address: <MAC 'Tata-Photon-Max-Wi-Fi-4994' [AC1]>
Channel:11
Frequency:2.462 GHz (Channel 11)
Quality=49/70 Signal level=-61 dBm
Encryption key:on
ESSID:"Tata-Photon-Max-Wi-Fi-4994"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=000000075d57040d
Extra: Last beacon: 172ms ago
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
Cell 02 - Address: <MAC 'dlink-39D0' [AC2]>
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=37/70 Signal level=-73 dBm
Encryption key:on
ESSID:"dlink-39D0"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=00000045f9e8938e
Extra: Last beacon: 2884ms ago
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : TKIP CCMP
Authentication Suites (1) : PSK
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : TKIP CCMP
Authentication Suites (1) : PSK
Cell 03 - Address: <MAC 'linksys' [AC3]>
Channel:11
Frequency:2.462 GHz (Channel 11)
Quality=70/70 Signal level=-35 dBm
Encryption key:on
ESSID:"linksys"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=000000144ac5ea0b
Extra: Last beacon: 232ms ago
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
##### module infos ######################
[rt2800usb]
filename: /lib/modules/3.16.0-55-generic/kernel/drivers/net/wireless/rt2x00/rt2800usb.ko
license: GPL
firmware: rt2870.bin
description: Ralink RT2800 USB Wireless LAN driver.
version: 2.3.0
author: http://rt2x00.serialmonkey.com
srcversion: 80C4499E147864C0B13476F
depends: rt2x00lib,rt2800lib,rt2x00usb
intree: Y
vermagic: 3.16.0-55-generic SMP mod_unload modversions 686
signer: Magrathea: Glacier signing key
sig_key: CE:7D:DF:85:0B:DF:98:9C:CF:49:92:BB:EA:D0:EB:19:6E:A3:49:1D
sig_hashalgo: sha512
parm: nohwcrypt:Disable hardware encryption. (bool)
[rt2x00usb]
filename: /lib/modules/3.16.0-55-generic/kernel/drivers/net/wireless/rt2x00/rt2x00usb.ko
license: GPL
description: rt2x00 usb library
version: 2.3.0
author: http://rt2x00.serialmonkey.com
srcversion: 21417B97E30FD4E6E469E1F
depends: rt2x00lib,mac80211
intree: Y
vermagic: 3.16.0-55-generic SMP mod_unload modversions 686
signer: Magrathea: Glacier signing key
sig_key: CE:7D:DF:85:0B:DF:98:9C:CF:49:92:BB:EA:D0:EB:19:6E:A3:49:1D
sig_hashalgo: sha512
[rt2800lib]
filename: /lib/modules/3.16.0-55-generic/kernel/drivers/net/wireless/rt2x00/rt2800lib.ko
license: GPL
description: Ralink RT2800 library
version: 2.3.0
author: http://rt2x00.serialmonkey.com, Bartlomiej Zolnierkiewicz
srcversion: EDDCA794C9E4C3981037918
depends: rt2x00lib,mac80211,crc-ccitt
intree: Y
vermagic: 3.16.0-55-generic SMP mod_unload modversions 686
signer: Magrathea: Glacier signing key
sig_key: CE:7D:DF:85:0B:DF:98:9C:CF:49:92:BB:EA:D0:EB:19:6E:A3:49:1D
sig_hashalgo: sha512
[rt2x00lib]
filename: /lib/modules/3.16.0-55-generic/kernel/drivers/net/wireless/rt2x00/rt2x00lib.ko
license: GPL
description: rt2x00 library
version: 2.3.0
author: http://rt2x00.serialmonkey.com
srcversion: 71EFA3CA86D02D0528C49EE
depends: mac80211,cfg80211
intree: Y
vermagic: 3.16.0-55-generic SMP mod_unload modversions 686
signer: Magrathea: Glacier signing key
sig_key: CE:7D:DF:85:0B:DF:98:9C:CF:49:92:BB:EA:D0:EB:19:6E:A3:49:1D
sig_hashalgo: sha512
[mac80211]
filename: /lib/modules/3.16.0-55-generic/kernel/net/mac80211/mac80211.ko
license: GPL
description: IEEE 802.11 subsystem
srcversion: 477882071593B10E01388C8
depends: cfg80211
intree: Y
vermagic: 3.16.0-55-generic SMP mod_unload modversions 686
signer: Magrathea: Glacier signing key
sig_key: CE:7D:DF:85:0B:DF:98:9C:CF:49:92:BB:EA:D0:EB:19:6E:A3:49:1D
sig_hashalgo: sha512
parm: max_nullfunc_tries:Maximum nullfunc tx tries before disconnecting (reason 4). (int)
parm: max_probe_tries:Maximum probe tries before disconnecting (reason 4). (int)
parm: beacon_loss_count:Number of beacon intervals before we decide beacon was lost. (int)
parm: probe_wait_ms:Maximum time(ms) to wait for probe response before disconnecting (reason 4). (int)
parm: ieee80211_default_rc_algo:Default rate control algorithm for mac80211 to use (charp)
[cfg80211]
filename: /lib/modules/3.16.0-55-generic/kernel/net/wireless/cfg80211.ko
description: wireless configuration support
license: GPL
author: Johannes Berg
srcversion: 046346857FD53951C911443
depends:
intree: Y
vermagic: 3.16.0-55-generic SMP mod_unload modversions 686
signer: Magrathea: Glacier signing key
sig_key: CE:7D:DF:85:0B:DF:98:9C:CF:49:92:BB:EA:D0:EB:19:6E:A3:49:1D
sig_hashalgo: sha512
parm: ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)
parm: cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)
##### module parameters #################
[rt2800usb]
nohwcrypt: N
[mac80211]
beacon_loss_count: 7
ieee80211_default_rc_algo: minstrel_ht
max_nullfunc_tries: 2
max_probe_tries: 5
probe_wait_ms: 500
[cfg80211]
cfg80211_disable_40mhz_24ghz: N
ieee80211_regdom: 00
##### /etc/modules ######################
lp
##### modprobe options ##################
[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci
[/etc/modprobe.d/blacklist.conf]
blacklist evbug
blacklist usbmouse
blacklist usbkbd
blacklist eepro100
blacklist de4x5
blacklist eth1394
blacklist snd_intel8x0m
blacklist snd_aw2
blacklist i2c_i801
blacklist prism54
blacklist bcm43xx
blacklist garmin_gps
blacklist asus_acpi
blacklist snd_pcsp
blacklist pcspkr
blacklist amd76x_edac
[/etc/modprobe.d/blacklist-rare-network.conf]
alias net-pf-3 off
alias net-pf-6 off
alias net-pf-9 off
alias net-pf-11 off
alias net-pf-12 off
alias net-pf-19 off
alias net-pf-21 off
alias net-pf-36 off
[/etc/modprobe.d/iwlwifi.conf]
remove iwlwifi \
(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
&& /sbin/modprobe -r mac80211
[/etc/modprobe.d/libpisock9.conf]
blacklist visor
[/etc/modprobe.d/mlx4.conf]
softdep mlx4_core post: mlx4_en
[/etc/modprobe.d/modesetting.conf]
options cirrus modeset=1
options mgag200 modeset=1
##### rc.local ##########################
exit 0
##### pm-utils ##########################
##### udev rules ########################
[/etc/udev/rules.d/70-persistent-net.rules]
# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'eth0' [IF]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# USB device 0x:0x (rt2800usb)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'wlan0' [IF]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"
##### dmesg #############################
[ 23.974692] ieee80211 phy0: rt2x00_set_rt: Info - RT chipset 5390, rev 0502 detected
[ 24.003062] ieee80211 phy0: rt2x00_set_rf: Info - RF chipset 5370 detected
[ 32.941352] ieee80211 phy0: rt2x00lib_request_firmware: Info - Loading firmware file 'rt2870.bin'
[ 33.083601] ieee80211 phy0: rt2x00lib_request_firmware: Info - Firmware detected - version: 0.29
[ 33.313855] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 33.318289] forcedeth 0000:00:07.0 eth0: MSI enabled
[ 36.860352] wlan0: authenticate with <MAC 'Tata-Photon-Max-Wi-Fi-4994' [AC1]>
[ 36.898849] wlan0: send auth to <MAC 'Tata-Photon-Max-Wi-Fi-4994' [AC1]> (try 1/3)
[ 36.900438] wlan0: authenticated
[ 36.904047] wlan0: associate with <MAC 'Tata-Photon-Max-Wi-Fi-4994' [AC1]> (try 1/3)
[ 36.907662] wlan0: RX AssocResp from <MAC 'Tata-Photon-Max-Wi-Fi-4994' [AC1]> (capab=0x411 status=0 aid=3)
[ 36.914154] wlan0: associated
[ 36.914185] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 39.386661] wlan0: deauthenticating from <MAC 'Tata-Photon-Max-Wi-Fi-4994' [AC1]> by local choice (Reason: 2=PREV_AUTH_NOT_VALID)
[ 39.429725] wlan0: authenticate with <MAC 'Tata-Photon-Max-Wi-Fi-4994' [AC1]>
[ 39.448838] wlan0: send auth to <MAC 'Tata-Photon-Max-Wi-Fi-4994' [AC1]> (try 1/3)
[ 39.451964] wlan0: authenticated
[ 39.456054] wlan0: associate with <MAC 'Tata-Photon-Max-Wi-Fi-4994' [AC1]> (try 1/3)
[ 39.459305] wlan0: RX AssocResp from <MAC 'Tata-Photon-Max-Wi-Fi-4994' [AC1]> (capab=0x411 status=0 aid=3)
[ 39.465794] wlan0: associated
########## wireless info END ############
Em conexão de rede - > Conexão wifi Usado apenas "endereço automático (DHCP)" Adicionado 8.8.8.8 como servidores DNS aditais
nslookup google.com
Server: 127.0.1.1
Address: 127.0.1.1#53
Non-authoritative answer:
*** Can't find google.com: No answer
sudo nano /etc/resolvconf/resolv.conf.d/tail Servidor de nomes adicionado 8.8.8.8 sudo service network-manager restart
Ainda não funciona.
Por favor, note uma correção na linha de assunto, deve ser Lubuntu 14.04 em vez do Ubuntu 14.04
cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.1.1
nameserver 8.8.8.8
Seguiu as instruções dadas na url nameserver 127.0.1.1 no resolv.conf não vai embora! e comentou dns = dnsmasq em /etc/NetworkManager/NetworkManager.conf e seu funcionamento agora
Se você puder fazer ping de um IP, mas não puder acessar um domínio, isso parece um problema com seu servidor DNS. Tente nslookup google.com para ver se a pesquisa de DNS funciona. Se não, tente alterar o seu servidor DNS para 8.8.8.8 (DNS público do Google).
Eu tive o mesmo problema. Resolvido, indo em Ferramentas do Sistema > Rede. Na guia DNS, notei um servidor 172. * que não reconheço. Eu substituí-lo com 8.8.8.8 e tudo funcionou bem.