ワイヤレスに接続されているがインターネットに接続されていない（Ubuntu 12.04）
2日間同じネットワークを使用していますが、すべて正常でした。ただし、今日はネットワークに接続されていると表示されますが、インターネットに接続できません。ワイヤレスの代わりにイーサネットケーブルを使用しても、インターネットに接続できます。また、私の友人は無線ネットワークに接続でき、インターネットに接続できます。昨日から何も更新もインストールもしていません。したがって、私はそれがなぜ起こっているのか全く分かりません。ここに私の接続に関するいくつかの情報があります：
私はあらゆる種類の助けに感謝します。
root@ghostrider:/etc/resolvconf# ping 127.0.0.1
PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
64 bytes from 127.0.0.1: icmp_req=1 ttl=64 time=0.042 ms
64 bytes from 127.0.0.1: icmp_req=2 ttl=64 time=0.023 ms
64 bytes from 127.0.0.1: icmp_req=3 ttl=64 time=0.036 ms
64 bytes from 127.0.0.1: icmp_req=4 ttl=64 time=0.040 ms
^C
--- 127.0.0.1 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 2998ms
rtt min/avg/max/mdev = 0.023/0.035/0.042/0.008 ms
root@ghostrider:/etc/resolvconf# ping 192.168.1.3
PING 192.168.1.3 (192.168.1.3) 56(84) bytes of data.
^C
--- 192.168.1.3 ping statistics ---
19 packets transmitted, 0 received, 100% packet loss, time 18143ms
root@ghostrider:/etc/resolvconf# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
^C
--- 8.8.8.8 ping statistics ---
11 packets transmitted, 0 received, 100% packet loss, time 10079ms
root@ghostrider:/etc/resolvconf# cat /etc/lsb-release; uname -a
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04 LTS"
Linux ghostrider 3.2.0-24-generic-pae #39-Ubuntu SMP Mon May 21 18:54:21 UTC 2012 i686 i686 i386 GNU/Linux
root@ghostrider:/etc/resolvconf# lspci -nnk | grep -iA2 net
03:00.0 Ethernet controller [0200]: Atheros Communications Inc. AR8131 Gigabit Ethernet [1969:1063] (rev c0)
Subsystem: Lenovo Device [17aa:3956]
Kernel driver in use: atl1c
--
04:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller [14e4:4727] (rev 01)
Subsystem: Broadcom Corporation Device [14e4:0510]
Kernel driver in use: wl
root@ghostrider:/etc/resolvconf# lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 007: ID 0489:e00d Foxconn / Hon Hai
Bus 001 Device 004: ID 1c7a:0801 LighTuning Technology Inc. Fingerprint Reader
Bus 001 Device 005: ID 064e:f219 Suyin Corp.
Bus 002 Device 010: ID 0424:2412 Standard Microsystems Corp.
Bus 002 Device 004: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 002 Device 011: ID 0403:6010 Future Technology Devices International, Ltd FT2232C Dual USB-UART/FIFO IC
root@ghostrider:/etc/resolvconf# iwconfig
lo no wireless extensions.
eth1 IEEE 802.11 ESSID:"PoliTekno"
Mode:Managed Frequency:2.462 GHz Access Point: 00:16:E3:40:C3:E4
Bit Rate=54 Mb/s Tx-Power:24 dBm
Retry min limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=5/5 Signal level=-52 dBm Noise level=-97 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
eth0 no wireless extensions.
root@ghostrider:/etc/resolvconf# rfkill list all
0: brcmwl-0: Wireless LAN
Soft blocked: no
Hard blocked: no
1: ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
2: ideapad_bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
5: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
root@ghostrider:/etc/resolvconf# lsmod
Module Size Used by
nls_iso8859_1 12617 0
nls_cp437 12751 0
vfat 17308 0
fat 55605 1 vfat
usb_storage 39646 0
uas 17828 0
snd_hda_codec_realtek 174055 1
rfcomm 38139 12
parport_pc 32114 0
ppdev 12849 0
bnep 17830 2
joydev 17393 0
ftdi_sio 35859 1
usbserial 37173 3 ftdi_sio
snd_hda_intel 32765 3
snd_hda_codec 109562 2 snd_hda_codec_realtek,snd_hda_intel
snd_hwdep 13276 1 snd_hda_codec
Acer_wmi 23612 0
hid_logitech_dj 18177 0
snd_pcm 80845 2 snd_hda_intel,snd_hda_codec
uvcvideo 67203 0
btusb 17912 2
snd_seq_midi 13132 0
videodev 86588 1 uvcvideo
bluetooth 158438 23 rfcomm,bnep,btusb
psmouse 72919 0
usbhid 41906 1 hid_logitech_dj
snd_rawmidi 25424 1 snd_seq_midi
intel_ips 17753 0
serio_raw 13027 0
root@ghostrider:/etc/resolvconf# ping 127.0.0.1
PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
64 bytes from 127.0.0.1: icmp_req=1 ttl=64 time=0.042 ms
64 bytes from 127.0.0.1: icmp_req=2 ttl=64 time=0.023 ms
64 bytes from 127.0.0.1: icmp_req=3 ttl=64 time=0.036 ms
64 bytes from 127.0.0.1: icmp_req=4 ttl=64 time=0.040 ms
^C
--- 127.0.0.1 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 2998ms
rtt min/avg/max/mdev = 0.023/0.035/0.042/0.008 ms
root@ghostrider:/etc/resolvconf# ping 192.168.1.3
PING 192.168.1.3 (192.168.1.3) 56(84) bytes of data.
^C
--- 192.168.1.3 ping statistics ---
19 packets transmitted, 0 received, 100% packet loss, time 18143ms
root@ghostrider:/etc/resolvconf# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
^C
--- 8.8.8.8 ping statistics ---
11 packets transmitted, 0 received, 100% packet loss, time 10079ms
root@ghostrider:/etc/resolvconf# cat /etc/lsb-release; uname -a
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04 LTS"
Linux ghostrider 3.2.0-24-generic-pae #39-Ubuntu SMP Mon May 21 18:54:21 UTC 2012 i686 i686 i386 GNU/Linux
root@ghostrider:/etc/resolvconf# lspci -nnk | grep -iA2 net
03:00.0 Ethernet controller [0200]: Atheros Communications Inc. AR8131 Gigabit Ethernet [1969:1063] (rev c0)
Subsystem: Lenovo Device [17aa:3956]
Kernel driver in use: atl1c
--
04:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller [14e4:4727] (rev 01)
Subsystem: Broadcom Corporation Device [14e4:0510]
Kernel driver in use: wl
root@ghostrider:/etc/resolvconf# lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 007: ID 0489:e00d Foxconn / Hon Hai
Bus 001 Device 004: ID 1c7a:0801 LighTuning Technology Inc. Fingerprint Reader
Bus 001 Device 005: ID 064e:f219 Suyin Corp.
Bus 002 Device 010: ID 0424:2412 Standard Microsystems Corp.
Bus 002 Device 004: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 002 Device 011: ID 0403:6010 Future Technology Devices International, Ltd FT2232C Dual USB-UART/FIFO IC
root@ghostrider:/etc/resolvconf# iwconfig
lo no wireless extensions.
eth1 IEEE 802.11 ESSID:"PoliTekno"
Mode:Managed Frequency:2.462 GHz Access Point: 00:16:E3:40:C3:E4
Bit Rate=54 Mb/s Tx-Power:24 dBm
Retry min limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=5/5 Signal level=-52 dBm Noise level=-97 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
eth0 no wireless extensions.
root@ghostrider:/etc/resolvconf# rfkill list all
0: brcmwl-0: Wireless LAN
Soft blocked: no
Hard blocked: no
1: ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
2: ideapad_bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
5: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
root@ghostrider:/etc/resolvconf# lsmod
Module Size Used by
nls_iso8859_1 12617 0
nls_cp437 12751 0
vfat 17308 0
fat 55605 1 vfat
usb_storage 39646 0
uas 17828 0
snd_hda_codec_realtek 174055 1
rfcomm 38139 12
parport_pc 32114 0
ppdev 12849 0
bnep 17830 2
joydev 17393 0
ftdi_sio 35859 1
usbserial 37173 3 ftdi_sio
snd_hda_intel 32765 3
snd_hda_codec 109562 2 snd_hda_codec_realtek,snd_hda_intel
snd_hwdep 13276 1 snd_hda_codec
Acer_wmi 23612 0
hid_logitech_dj 18177 0
snd_pcm 80845 2 snd_hda_intel,snd_hda_codec
uvcvideo 67203 0
btusb 17912 2
snd_seq_midi 13132 0
videodev 86588 1 uvcvideo
bluetooth 158438 23 rfcomm,bnep,btusb
psmouse 72919 0
usbhid 41906 1 hid_logitech_dj
snd_rawmidi 25424 1 snd_seq_midi
intel_ips 17753 0
serio_raw 13027 0
hid 77367 2 hid_logitech_dj,usbhid
ideapad_laptop 17890 0
sparse_keymap 13658 2 Acer_wmi,ideapad_laptop
lib80211_crypt_tkip 17275 0
snd_seq_midi_event 14475 1 snd_seq_midi
snd_seq 51567 2 snd_seq_midi,snd_seq_midi_event
wl 2646601 0
wmi 18744 1 Acer_wmi
i915 414672 3
drm_kms_helper 45466 1 i915
snd_timer 28931 2 snd_pcm,snd_seq
mac_hid 13077 0
snd_seq_device 14172 3 snd_seq_midi,snd_rawmidi,snd_seq
lib80211 14040 2 lib80211_crypt_tkip,wl
drm 197692 4 i915,drm_kms_helper
i2c_algo_bit 13199 1 i915
snd 62064 15 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_se q,snd_timer,snd_seq_device
video 19068 1 i915
mei 36570 0
soundcore 14635 1 snd
snd_page_alloc 14108 2 snd_hda_intel,snd_pcm
lp 17455 0
parport 40930 3 parport_pc,ppdev,lp
atl1c 36718 0
root@ghostrider:/etc/resolvconf# nm-tool
NetworkManager Tool
State: connected (global)
- Device: eth1 [PoliTekno] ----------------------------------------------------
Type: 802.11 WiFi
Driver: wl
State: connected
Default: yes
HW Address: AC:81:12:7F:6B:B2
Capabilities:
Speed: 54 Mb/s
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points (* = current AP)
CnDStudios: Infra, 00:12:BF:3F:0A:8A, Freq 2412 MHz, Rate 54 Mb/s, Strength 85 WPA
AIR_TIES: Infra, 00:1C:A8:6E:84:32, Freq 2462 MHz, Rate 54 Mb/s, Strength 72 WPA2
VKSS: Infra, 00:E0:4D:01:0D:47, Freq 2452 MHz, Rate 54 Mb/s, Strength 62 WPA2
PROGEDA: Infra, 00:1A:2A:60:BF:61, Freq 2462 MHz, Rate 54 Mb/s, Strength 47 WPA
MobilAtolye: Infra, 72:2B:C1:65:75:3C, Freq 2422 MHz, Rate 54 Mb/s, Strength 35 WPA WPA2
AIRTIES_WAR-141: Infra, 00:1C:A8:AB:AA:48, Freq 2422 MHz, Rate 54 Mb/s, Strength 35 WPA WPA2
tilda_biri_yeni: Infra, 54:E6:FC:B0:3C:E9, Freq 2437 MHz, Rate 0 Mb/s, Strength 34 WEP
*PoliTekno: Infra, 00:16:E3:40:C3:E4, Freq 2462 MHz, Rate 54 Mb/s, Strength 100 WPA2
AIRTIES_RJY: Infra, 00:1A:2A:BD:85:16, Freq 2462 MHz, Rate 54 Mb/s, Strength 55 WEP
IPv4 Settings:
Address: 0.0.0.0
Prefix: 24 (255.255.255.0)
Gateway: 192.168.1.1
DNS: 192.168.1.1
- Device: eth0 -----------------------------------------------------------------
Type: Wired
Driver: atl1c
State: unavailable
Default: no
HW Address: F0:DE:F1:6C:90:65
Capabilities:
Carrier Detect: yes
Speed: 100 Mb/s
Wired Properties
Carrier: off
root@ghostrider:/etc/resolvconf# Sudo iwlist scan
lo Interface doesn't support scanning.
eth1 Scan completed :
Cell 01 - Address: 00:16:E3:40:C3:E4
ESSID:"PoliTekno"
Mode:Managed
Frequency:2.462 GHz (Channel 11)
Quality:5/5 Signal level:-48 dBm Noise level:-98 dBm
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
Encryption key:on
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; 6 Mb/s; 9 Mb/s
12 Mb/s; 48 Mb/s
Cell 02 - Address: 00:E0:4D:01:0D:47
ESSID:"VKSS"
Mode:Managed
Frequency:2.452 GHz (Channel 9)
Quality:4/5 Signal level:-64 dBm Noise level:-98 dBm
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
Encryption key:on
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; 24 Mb/s; 36 Mb/s
48 Mb/s; 54 Mb/s
Cell 03 - Address: 00:1C:A8:AB:AA:48
ESSID:"AIRTIES_WAR-141"
Mode:Managed
Frequency:2.422 GHz (Channel 3)
Quality:2/5 Signal level:-77 dBm Noise level:-95 dBm
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: Unknown: DDB20050F204104A0001101049001E007FC5100018DE7CF0D8B70223A62711C18926AC290E30303030303139631044000102103B0001031047001076B31BC241E953CB99C3872554425A28102100194169725469657320576972656C657373204E6574776F726B73102300074169723534343010240008312E322E302E31321042000F4154303939313131383030323832351054000800060050F20400011011000741697235343430100800020084103C000103
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
Encryption key:on
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; 6 Mb/s; 9 Mb/s
12 Mb/s; 48 Mb/s
Cell 04 - Address: 72:2B:C1:65:75:3C
ESSID:"MobilAtolye"
Mode:Managed
Frequency:2.422 GHz (Channel 3)
Quality:2/5 Signal level:-78 dBm Noise level:-92 dBm
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : TKIP CCMP
Authentication Suites (1) : PSK
IE: Unknown: DDA20050F204104A0001101044000102103B00010310470010BC329E001DD811B28601722BC165753C1021001D48756177656920546563686E6F6C6F6769657320436F2E2C204C74642E1023001C48756177656920576972656C6573732041636365737320506F696E74102400065254323836301042000831323334353637381054000800060050F204000110110009487561776569415053100800020084103C000100
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : TKIP CCMP
Authentication Suites (1) : PSK
Encryption key:on
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
18 Mb/s; 36 Mb/s; 54 Mb/s; 6 Mb/s; 12 Mb/s
24 Mb/s; 48 Mb/s
Cell 05 - Address: 00:12:BF:3F:0A:8A
ESSID:"CnDStudios"
Mode:Managed
Frequency:2.412 GHz (Channel 1)
Quality:5/5 Signal level:-47 dBm Noise level:-95 dBm
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (1) : TKIP
Authentication Suites (1) : PSK
Encryption key:on
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 22 Mb/s
6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
36 Mb/s; 48 Mb/s; 54 Mb/s
Cell 06 - Address: 00:1C:A8:6E:84:32
ESSID:"AIR_TIES"
Mode:Managed
Frequency:2.462 GHz (Channel 11)
Quality:5/5 Signal level:-56 dBm Noise level:-98 dBm
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
Encryption key:on
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 22 Mb/s
6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
36 Mb/s; 48 Mb/s; 54 Mb/s
Cell 07 - Address: 54:E6:FC:B0:3C:E9
ESSID:"tilda_biri_yeni"
Mode:Managed
Frequency:2.437 GHz (Channel 6)
Quality:1/5 Signal level:-85 dBm Noise level:-99 dBm
Encryption key:on
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
12 Mb/s; 24 Mb/s; 36 Mb/s; 9 Mb/s; 18 Mb/s
48 Mb/s; 54 Mb/s
Cell 08 - Address: 18:28:61:16:57:C3
ESSID:"obilet"
Mode:Managed
Frequency:2.437 GHz (Channel 6)
Quality:1/5 Signal level:-88 dBm Noise level:-99 dBm
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
Encryption key:on
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; 6 Mb/s; 9 Mb/s
12 Mb/s; 48 Mb/s
Cell 09 - Address: 00:1A:2A:60:BF:61
ESSID:"PROGEDA"
Mode:Managed
Frequency:2.462 GHz (Channel 11)
Quality:2/5 Signal level:-75 dBm Noise level:-98 dBm
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (1) : TKIP
Authentication Suites (1) : PSK
Encryption key:on
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 22 Mb/s
6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
36 Mb/s; 48 Mb/s; 54 Mb/s
eth0 Interface doesn't support scanning.
エディターを使用して/ var/log/syslogのエラーを確認することもできます。
DHCPサーバー（主にゲートウェイ）に接続している場合は、dhclient eth1を使用して手動でIPリースを取得してください。
ゲートウェイにpingを実行して、接続されているかどうかを確認してください。
同じ問題が発生しましたが、ルーターの設定を変更して修正しました。チャネル選択をAUTOから1に切り替えました。明らかに、チャネル> 11が自動的に選択されたときに問題が発生したようです。実際、私の問題は継続的に発生しませんでした。
詳細： ランチパッドのバグレポート
ワイヤレスデバイス：Broadcom Corporation BCM43225 802.11b/g/n
いくつかありますが、ファイアウォールがすべてのトラフィックをブロックしていると思います。
i/Oエラーなどのディスクハードウェアの障害は、ブラウザからのデータの保存に失敗するため、ネットが停止する可能性があります。
ファイアウォールはトラフィックをブロックし、tcp 25,53,80,110,443を許可し、udp 53も許可するルールを設定する必要があります。
ufwやgufwなど、複数のファイアウォールプログラムが同時に実行されており、それらが問題になっている場合は、gufwのみを使用することをお勧めします。
私がしなければなりませんでした：
ifdown eth0
wlan0を実際に動作させるには。すでにリースなどがありました。12.04を実行しています。
IPアドレスを持っていないようです。
IPv4 Settings:
Address: 0.0.0.0 <----- NO IP
Prefix: 24 (255.255.255.0)
Gateway: 192.168.1.1
DNS: 192.168.1.1
でIPをチェック
ifconfig
とルート
route -n
IP構成を確認しましたか？
ifconfig eth1
およびルーティングテーブル
route -n
問題が何であるかを確認するだけです。