Hallo zusammen,
ich habe Ubuntu 15.04 komplett neu installiert und seitdem Probleme mit der WLAN-Verbindung. Als Fremdpakete sind bisher nur Google Chrome und Druckertreiber für einen Epson installiert.
Mittels einer O2-Box habe ich ein WLAN eingerichtet, dessen ESSID verborgen wird. Bislang hat das auch fast problemlos funktioniert (selten gab es schon Verbindungsprobleme, die durch einen Reboot aber behoben wurden). Ich nutze ein Lenovo U430 Notebook.
Das Gerät verbindet sich nicht mehr automatisch mit dem WLAN. Wenn ich den Befehl sudo iwlist wlan0 scan ausgeführt habe, hat es sich sofort verbunden – das geht jetzt aber auch nicht mehr. Selbst wenn die WLAN-Verbindung aufgebaut war, hatte ich keine Internetverbindung (weder ping www.google.com, noch Browser).
Nach der Installation hat das WLAN inklusive Internet noch teilweise funktioniert. Mittlerweile gar nicht mehr. Ich bin mir nicht bewusst, wesentliche Einstellungen verändert zu haben. Internet funktioniert bei Kabelverbindung mit Ubuntu super. Ich kann auch mit einem Windows-Rechner über WLAN ins Internet.
Hier nun noch ein paar Angaben: uname -a
Linux u430 3.19.0-16-generic #16-Ubuntu SMP Thu Apr 30 16:09:58 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
lspci -nnk | grep -i net -A2
01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10) Subsystem: Lenovo Device [17aa:3801] Kernel driver in use: r8169 02:00.0 Network controller [0280]: Intel Corporation Wireless 7260 [8086:08b2] (rev 73) Subsystem: Intel Corporation Wireless-N 7260 [8086:4262] Kernel driver in use: iwlwifi nico@u430:~$ lspci -nnk | grep -i net -A2 01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10) Subsystem: Lenovo Device [17aa:3801] Kernel driver in use: r8169 02:00.0 Network controller [0280]: Intel Corporation Wireless 7260 [8086:08b2] (rev 73) Subsystem: Intel Corporation Wireless-N 7260 [8086:4262] Kernel driver in use: iwlwifi
cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback
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 search localdomain
cat /etc/hosts
127.0.0.1 localhost 127.0.1.1 u430 # The following lines are desirable for IPv6 capable hosts ::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters
Netzwerkconfig
nico@u430:~$ '''ifconfig -a''' eth0 Link encap:Ethernet Hardware Adresse 08:9e:01:f6:48:0c inet Adresse:192.168.1.2 Bcast:192.168.1.255 Maske:255.255.255.0 inet6-Adresse: fe80::a9e:1ff:fef6:480c/64 Gültigkeitsbereich:Verbindung UP BROADCAST RUNNING MULTICAST MTU:1500 Metrik:1 RX-Pakete:1194 Fehler:0 Verloren:0 Überläufe:0 Fenster:0 TX-Pakete:1198 Fehler:0 Verloren:0 Überläufe:0 Träger:0 Kollisionen:0 Sendewarteschlangenlänge:1000 RX-Bytes:769992 (769.9 KB) TX-Bytes:190338 (190.3 KB) lo Link encap:Lokale Schleife inet Adresse:127.0.0.1 Maske:255.0.0.0 inet6-Adresse: ::1/128 Gültigkeitsbereich:Maschine UP LOOPBACK RUNNING MTU:65536 Metrik:1 RX-Pakete:406 Fehler:0 Verloren:0 Überläufe:0 Fenster:0 TX-Pakete:406 Fehler:0 Verloren:0 Überläufe:0 Träger:0 Kollisionen:0 Sendewarteschlangenlänge:0 RX-Bytes:66290 (66.2 KB) TX-Bytes:66290 (66.2 KB) wlan0 Link encap:Ethernet Hardware Adresse 0c:8b:fd:b1:42:20 UP BROADCAST MULTICAST MTU:1500 Metrik:1 RX-Pakete:0 Fehler:0 Verloren:0 Überläufe:0 Fenster:0 TX-Pakete:0 Fehler:0 Verloren:0 Überläufe:0 Träger:0 Kollisionen:0 Sendewarteschlangenlänge:1000 RX-Bytes:0 (0.0 B) TX-Bytes:0 (0.0 B) nico@u430:~$ '''iwconfig''' eth0 no wireless extensions. wlan0 IEEE 802.11bgn ESSID:off/any Mode:Managed Access Point: Not-Associated Tx-Power=0 dBm Retry short limit:7 RTS thr:off Fragment thr:off Power Management:off lo no wireless extensions. nico@u430:~$ '''route -n''' Kernel-IP-Routentabelle Ziel Router Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.1.1 0.0.0.0 UG 1024 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 eth0 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 nico@u430:~$ arp -av ? (192.168.1.128) auf b0:e8:92:02:d2:91 [ether] auf eth0 ? (192.168.1.1) auf 4c:09:d4:41:0f:e7 [ether] auf eth0 Einträge: 2 Ignoriert: 0 Gefunden: 2 nico@u430:~$ '''ip neigh show ''' 192.168.1.128 dev eth0 lladdr b0:e8:92:02:d2:91 STALE 192.168.1.1 dev eth0 lladdr 4c:09:d4:41:0f:e7 REACHABLE fe80::1 dev eth0 lladdr 4c:09:d4:41:0f:e7 router STALE
cat /var/lib/NetworkManager/NetworkManager.state
[main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true WimaxEnabled=true
cat /etc/NetworkManager/NetworkManager.conf
[main] plugins=ifupdown,keyfile,ofono dns=dnsmasq [ifupdown] managed=false
cat /etc/udev/rules.d/70-persistent-net.rules | egrep -i 'device|sub' -A3
# PCI device 0x10ec:0x8168 (r8169) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="08:9e:01:f6:48:0c", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0" # PCI device 0x8086:0x08b2 (iwlwifi) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="0c:8b:fd:b1:42:20", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"
rfkill list
0: ideapad_wlan: Wireless LAN Soft blocked: no Hard blocked: no 1: ideapad_bluetooth: Bluetooth Soft blocked: no Hard blocked: no 2: hci0: Bluetooth Soft blocked: no Hard blocked: no 3: phy0: Wireless LAN Soft blocked: no Hard blocked: no
lsmod
Module Size Used by bbswitch 16384 0 rfcomm 69632 8 bnep 20480 2 nls_iso8859_1 16384 1 snd_hda_codec_realtek 86016 1 snd_hda_codec_hdmi 53248 1 snd_hda_codec_generic 69632 1 snd_hda_codec_realtek snd_hda_intel 32768 5 snd_hda_controller 32768 1 snd_hda_intel snd_hda_codec 143360 5 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_intel,snd_hda_controller snd_hwdep 20480 1 snd_hda_codec snd_pcm 106496 4 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_controller snd_seq_midi 16384 0 snd_seq_midi_event 16384 1 snd_seq_midi snd_rawmidi 32768 1 snd_seq_midi snd_seq 69632 2 snd_seq_midi_event,snd_seq_midi arc4 16384 2 snd_seq_device 16384 3 snd_seq,snd_rawmidi,snd_seq_midi iwlmvm 278528 0 mac80211 720896 1 iwlmvm nvidia 8380416 43 hid_generic 16384 0 iwlwifi 196608 1 iwlmvm hid_multitouch 20480 0 usbhid 53248 0 intel_rapl 20480 0 iosf_mbi 16384 1 intel_rapl x86_pkg_temp_thermal 16384 0 intel_powerclamp 20480 0 coretemp 16384 0 btusb 32768 0 kvm 483328 0 bluetooth 491520 22 bnep,btusb,rfcomm hid 110592 3 hid_multitouch,hid_generic,usbhid uvcvideo 90112 0 videobuf2_vmalloc 16384 1 uvcvideo videobuf2_memops 16384 1 videobuf2_vmalloc videobuf2_core 49152 1 uvcvideo v4l2_common 16384 1 videobuf2_core videodev 159744 3 uvcvideo,v4l2_common,videobuf2_core cfg80211 540672 3 iwlwifi,mac80211,iwlmvm media 24576 2 uvcvideo,videodev snd_timer 32768 2 snd_pcm,snd_seq crct10dif_pclmul 16384 0 crc32_pclmul 16384 0 snd 90112 21 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel,snd_seq_device ghash_clmulni_intel 16384 0 soundcore 16384 2 snd,snd_hda_codec aesni_intel 172032 1 aes_x86_64 20480 1 aesni_intel lrw 16384 1 aesni_intel gf128mul 16384 1 lrw glue_helper 16384 1 aesni_intel ablk_helper 16384 1 aesni_intel cryptd 20480 3 ghash_clmulni_intel,aesni_intel,ablk_helper i915 1052672 6 drm_kms_helper 122880 1 i915 drm 344064 7 i915,drm_kms_helper,nvidia joydev 20480 0 i2c_algo_bit 16384 1 i915 shpchp 40960 0 serio_raw 16384 0 mei_me 20480 0 mei 90112 1 mei_me lpc_ich 24576 0 ideapad_laptop 20480 0 sparse_keymap 16384 1 ideapad_laptop video 20480 1 i915 soc_button_array 16384 0 intel_smartconnect 16384 0 mac_hid 16384 0 wmi 20480 0 parport_pc 32768 0 ppdev 20480 0 lp 20480 0 parport 45056 3 lp,ppdev,parport_pc autofs4 40960 2 psmouse 118784 0 r8169 81920 0 ahci 36864 3 libahci 32768 1 ahci mii 16384 1 r8169
iwlist chan
eth0 no frequency information. wlan0 13 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 lo no frequency information.
Der Router ist auf "Funkkanal automatisch auswählen" eingestellt. Aktueller Channel ist 5.
sudo iwlist scan
eth0 Interface doesn't support scanning. wlan0 Scan completed : Cell 01 - Address: 7C:4F:B5:44:7D:7F Channel:6 Frequency:2.437 GHz (Channel 6) Quality=36/70 Signal level=-74 dBm Encryption key:on ESSID:"WLAN-447D43" 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=0000011736c06758 Extra: Last beacon: 24ms ago IE: Unknown: 000B574C414E2D343437443433 IE: Unknown: 010882848B960C121824 IE: Unknown: 030106 IE: IEEE 802.11i/WPA2 Version 1 Group Cipher : TKIP Pairwise Ciphers (2) : TKIP CCMP Authentication Suites (1) : PSK IE: WPA Version 1 Group Cipher : TKIP Pairwise Ciphers (2) : TKIP CCMP Authentication Suites (1) : PSK IE: Unknown: 2A0100 IE: Unknown: 32043048606C IE: Unknown: DD180050F2020101030003A4000027A4000042435E0062322F00 IE: Unknown: 2D1A0E101BFFFF000000000000000000000000000000000000000000 IE: Unknown: 3D16060F0A00000000000000000000000000000000000000 IE: Unknown: DD0900037F01010000FF7F IE: Unknown: DD0A00037F04010030000000 IE: Unknown: 0706444520010D14 IE: Unknown: DD910050F204104A00011010440001021041000100103B00010310470010000000000000000300007C4FB5447D7F1021000B436F72706F726174696F6E1023000941525638353339505710240008312E31372E3030301042000A4A3130393034303730331054000800060050F204000110110014576972656C65737320526F757465722857464129100800020084103C000103 Cell 02 - Address: 00:24:FE:41:AA:56 Channel:7 Frequency:2.442 GHz (Channel 7) Quality=39/70 Signal level=-71 dBm Encryption key:on ESSID:"home" 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=00000000715edb7b Extra: Last beacon: 24ms ago IE: Unknown: 0004686F6D65 IE: Unknown: 010882848B960C121824 IE: Unknown: 030107 IE: IEEE 802.11i/WPA2 Version 1 Group Cipher : TKIP Pairwise Ciphers (1) : CCMP Authentication Suites (1) : PSK IE: WPA Version 1 Group Cipher : TKIP Pairwise Ciphers (1) : TKIP Authentication Suites (1) : PSK IE: Unknown: 2A0100 IE: Unknown: 32043048606C IE: Unknown: DD180050F2020101820003A4000027A4000042435E0062322F00 IE: Unknown: 2D1ACE131BFFFF000000000000000000000000000000000000000000 IE: Unknown: 3D16070F0800000000000000000000000000000000000000 IE: Unknown: DD0900037F01010000FF7F IE: Unknown: DD0A00037F04010020000000 IE: Unknown: DD0C00040E010102010000000000 IE: Unknown: DD6A0050F204104A0001101044000102103B0001001047001066571E7943346C1D9AB741FE240056AA1021000341564D10230009465249545A21426F78102400043030303010420004303030301054000800060050F20400011011000446426F78100800020188103C000103 Cell 03 - Address: 74:31:70:39:B7:C2 Channel:11 Frequency:2.462 GHz (Channel 11) Quality=46/70 Signal level=-64 dBm Encryption key:on ESSID:"WLAN-39B757" Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s 36 Mb/s; 48 Mb/s; 54 Mb/s Mode:Master Extra:tsf=00000100f268f2bb Extra: Last beacon: 24ms ago IE: Unknown: 000B574C414E2D333942373537 IE: Unknown: 010482848B96 IE: Unknown: 03010B IE: Unknown: 0706444520010D14 IE: Unknown: 200100 IE: Unknown: 2A0100 IE: Unknown: 2D1A6E001EFFFF000001000000000000000000000000000000000000 IE: Unknown: 32080C1218243048606C IE: Unknown: 3D160B070500000000000000000000000000000000000000 IE: Unknown: DD1E00904C336E001EFFFF000001000000000000000000000000000000000000 IE: Unknown: DD1A00904C340B070500000000000000000000000000000000000000 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 IE: Unknown: DD180050F2020101020003A4000027A4000042435E0062322F00 IE: Unknown: DD910050F204104A00011010440001021041000100103B000103104700100000000000000003000074317039B7C21021000B436F72706F726174696F6E10230009564756393533414B5710240008312E33372E3030301042000A4A3133363035323333371054000800060050F204000110110014576972656C65737320526F757465722857464129100800020084103C000103 IE: Unknown: DD050009860100 Cell 04 - Address: 08:7A:4C:02:70:33 Channel:11 Frequency:2.462 GHz (Channel 11) Quality=34/70 Signal level=-76 dBm Encryption key:off ESSID:"Telekom_FON" 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=00000022dacb5131 Extra: Last beacon: 288ms ago IE: Unknown: 000B54656C656B6F6D5F464F4E IE: Unknown: 010882848B962430486C IE: Unknown: 03010B IE: Unknown: 2A0104 IE: Unknown: 2F0104 IE: Unknown: 32040C121860 IE: Unknown: 0B050000400000 IE: Unknown: 2D1AAC181BFFFF000000000000000000000000000000000000000000 IE: Unknown: 3D160B001500000000000000000000000000000000000000 IE: Unknown: 4A0E14000A002C01C800140005001900 IE: Unknown: 7F03010008 IE: Unknown: DD090010180200000C0000 IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00 Cell 05 - Address: 08:7A:4C:02:70:32 Channel:11 Frequency:2.462 GHz (Channel 11) Quality=34/70 Signal level=-76 dBm Encryption key:on ESSID:"WLAN-K8K4RN" 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=00000022da047644 Extra: Last beacon: 292ms ago IE: Unknown: 000B574C414E2D4B384B34524E IE: Unknown: 010882848B962430486C IE: Unknown: 03010B IE: Unknown: 2A0104 IE: Unknown: 2F0104 IE: IEEE 802.11i/WPA2 Version 1 Group Cipher : CCMP Pairwise Ciphers (1) : CCMP Authentication Suites (1) : PSK IE: Unknown: 32040C121860 IE: Unknown: 0B050100400000 IE: Unknown: 2D1AAC181BFFFF000000000000000000000000000000000000000000 IE: Unknown: 3D160B001500000000000000000000000000000000000000 IE: Unknown: 4A0E14000A002C01C800140005001900 IE: Unknown: 7F03010008 IE: Unknown: DD800050F204104A0001101044000102103B00010310470010000000000000000000000000000000001021000842726F6164636F6D1023000842726F6164636F6D1024000631323334353610420004313233341054000800060050F20400011011000A42726F6164636F6D4150100800020000103C0001031049000600372A000120 IE: Unknown: DD090010180201000C0000 IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00 Cell 06 - Address: 4C:09:D4:41:0F:E8 Channel:5 Frequency:2.432 GHz (Channel 5) Quality=70/70 Signal level=-28 dBm Encryption key:on ESSID:"" 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 Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s Mode:Master Extra:tsf=0000000ce5dfb290 Extra: Last beacon: 468ms ago IE: Unknown: 0000 IE: Unknown: 010882848B961224486C IE: Unknown: 030105 IE: Unknown: 32040C183060 IE: Unknown: 0706444520010D14 IE: Unknown: 33082001020304050607 IE: Unknown: 33082105060708090A0B IE: Unknown: 050400010000 IE: Unknown: 2A0104 IE: Unknown: 2D1A6E1017FFFF000001000000000000000000000000000000000000 IE: Unknown: 3D1605070600000000000000000000000000000000000000 IE: Unknown: 7F0101 IE: Unknown: 4A0E14000A002C01C800140005001900 IE: IEEE 802.11i/WPA2 Version 1 Group Cipher : CCMP Pairwise Ciphers (1) : CCMP Authentication Suites (1) : PSK Preauthentication Supported IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00 IE: Unknown: 0B050001047A12 IE: Unknown: DD1E00904C336E1017FFFF000001000000000000000000000000000000000000 IE: Unknown: DD1A00904C3405070600000000000000000000000000000000000000 lo Interface doesn't support scanning.
Hier ist jetzt mein WLAN ("HomeWlan") auch gar nicht gelistet. Es existiert aber (Windows, Android...).
Ich hoffe, es kann mir jemand weiterhelfen. Vielen Dank!!