Thread: Wifi working badly Centrino Advanced-N 6230 Ubuntu 12.04

i've installed last version of xubuntu on new laptop, samsung serie 5 ultrabook 530u3b.

after few minutes, wifi doesn't work anymore.

checked configuration: looks ok.

ideas?

code:

milou@milou-laptop:~$ cat /etc/lsb-release  distrib_id=ubuntu distrib_release=12.04 distrib_codename=precise distrib_description="ubuntu 12.04 lts"     milou@milou-laptop:~$ 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 003 device 001: id 1d6b:0002 linux foundation 2.0 root hub  bus 004 device 001: id 1d6b:0003 linux foundation 3.0 root hub bus 001 device 002: id 8087:0024 intel corp. integrated rate matching hub bus 002 device 002: id 8087:0024 intel corp. integrated rate matching hub  bus 001 device 003: id 2232:1018   bus 002 device 003: id 8086:0189 intel corp.  bus 003 device 002: id 04f3:0210 elan microelectronics corp. am-400 hama optical mouse     milou@milou-laptop:~$ lspci 00:00.0 host bridge: intel corporation 2nd generation core processor family dram controller (rev 09) 00:02.0  vga compatible controller: intel corporation 2nd generation core  processor family integrated graphics controller (rev 09)  00:16.0 communication controller: intel corporation 6 series/c200 series chipset family mei controller #1 (rev 04) 00:1a.0 usb controller: intel corporation 6 series/c200 series chipset family usb enhanced host controller #2 (rev 04)  00:1b.0 audio device: intel corporation 6 series/c200 series chipset family high definition audio controller (rev 04) 00:1c.0 pci bridge: intel corporation 6 series/c200 series chipset family pci express root port 1 (rev b4)  00:1c.3 pci bridge: intel corporation 6 series/c200 series chipset family pci express root port 4 (rev b4) 00:1c.4 pci bridge: intel corporation 6 series/c200 series chipset family pci express root port 5 (rev b4)  00:1d.0 usb controller: intel corporation 6 series/c200 series chipset family usb enhanced host controller #1 (rev 04) 00:1f.0 isa bridge: intel corporation hm65 express chipset family lpc controller (rev 04)  00:1f.2 sata controller: intel corporation 6 series/c200 series chipset family 6 port sata ahci controller (rev 04) 00:1f.3 smbus: intel corporation 6 series/c200 series chipset family smbus controller (rev 04)  01:00.0 network controller: intel corporation centrino advanced-n 6230 (rev 34) 02:00.0 ethernet controller: realtek semiconductor co., ltd. rtl8111/8168b pci express gigabit ethernet controller (rev 06)  03:00.0 usb controller: asmedia technology inc. asm1042 superspeed usb host controller    milou@milou-laptop:~$ lspci -nn | grep -i net 01:00.0 network controller [0280]: intel corporation centrino advanced-n 6230 [8086:0091] (rev 34)  02:00.0 ethernet controller [0200]: realtek semiconductor co., ltd.  rtl8111/8168b pci express gigabit ethernet controller [10ec:8168] (rev  06)    milou@milou-laptop:~$ sudo lshw -c network  [sudo] password milou:    *-network                       description: interface réseau sans fil        produit: centrino advanced-n 6230        fabriquant: intel corporation         identifiant matériel: 0        information bus: pci@0000:01:00.0        nom logique: wlan0        version: 34        numéro de série: 88:53:2e:92:81:87        bits: 64 bits         horloge: 33mhz        fonctionnalités: pm msi pciexpress bus_master cap_list ethernet physical wireless         configuration: broadcast=yes driver=iwlwifi  driverversion=3.2.0-24-generic firmware=18.168.6.1 ip=192.168.0.6  latency=0 link=yes multicast=yes wireless=ieee 802.11abgn         ressources: irq:48 mémoire:f0600000-f0601fff   *-network        description: ethernet interface        produit: rtl8111/8168b pci express gigabit ethernet controller        fabriquant: realtek semiconductor co., ltd.         identifiant matériel: 0        information bus: pci@0000:02:00.0        nom logique: eth0        version: 06        numéro de série: e8:03:9a:33:96:eb        taille: 10mbit/s         capacité: 1gbit/s        bits: 64 bits        horloge: 33mhz         fonctionnalités: pm msi pciexpress msix vpd bus_master cap_list  ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd  autonegotiation         configuration: autonegotiation=on broadcast=yes driver=r8169  driverversion=2.3lk-napi duplex=half firmware=rtl8168e-3_0.0.4 03/27/12  latency=0 link=no multicast=yes port=mii speed=10mbit/s        ressources: irq:46 porte/s:2000(taille=256) mémoire:f0404000-f0404fff mémoire:f0400000-f0403fff     milou@milou-laptop:~$ lsmod module                  size  used usbhid                 41906  0  hid                    77367  1 usbhid snd_hda_codec_hdmi     31775  1   snd_hda_codec_realtek   174055  1  parport_pc             32114  0  ppdev                  12849  0  rfcomm                 38139  16  bnep                   17830  2   joydev                 17393  0  arc4                   12473  2  snd_hda_intel          32765  5  snd_hda_codec         109562  3 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel  snd_hwdep              13276  1 snd_hda_codec snd_pcm                80845  3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec snd_seq_midi           13132  0  snd_rawmidi            25424  1 snd_seq_midi  snd_seq_midi_event     14475  1 snd_seq_midi snd_seq                51567  2 snd_seq_midi,snd_seq_midi_event snd_timer              28931  2 snd_pcm,snd_seq snd_seq_device         14172  3 snd_seq_midi,snd_rawmidi,snd_seq  mac_hid                13077  0  i915                  414568  2  iwlwifi               287751  0  psmouse                87213  0  mac80211              436455  1 iwlwifi  btusb                  17912  2  drm_kms_helper         45466  1 i915 serio_raw              13027  0  drm                   197692  3 i915,drm_kms_helper i2c_algo_bit           13199  1 i915  video                  19068  1 i915 uvcvideo               67203  0  videodev               86588  1 uvcvideo mei                    36570  0  bluetooth             158438  23 rfcomm,bnep,btusb  snd                    62064  20 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device cfg80211              178679  2 iwlwifi,mac80211  soundcore              14635  1 snd snd_page_alloc         14115  2 snd_hda_intel,snd_pcm lp                     17455  0  parport                40930  3 parport_pc,ppdev,lp r8169                  56321  0      milou@milou-laptop:~$ iwconfig lo        no wireless extensions.   wlan0     ieee 802.11abgn  essid:"tchoutchou"             mode:managed  frequency:2.442 ghz  access point: e6:65:b2:d8:f5:b4               bit rate=1 mb/s   tx-power=15 dbm              retry  long limit:7   rts thr:off   fragment thr:off           power management:on           link quality=47/70  signal level=-63 dbm              rx invalid nwid:0  rx invalid crypt:0  rx invalid frag:0           tx excessive retries:32  invalid misc:154   missed beacon:0   eth0      no wireless extensions.     milou@milou-laptop:~$ ifconfigeth0      link encap:ethernet  hwaddr e8:03:9a:33:96:eb              broadcast multicast  mtu:1500  metric:1           packets reçus:0 erreurs:0 :0 overruns:0 frame:0           tx packets:0 errors:0 dropped:0 overruns:0 carrier:0           collisions:0 lg file transmission:1000             octets reçus:0 (0.0 b) octets transmis:0 (0.0 b)           interruption:46 adresse de base:0xa000    lo        link encap:boucle locale             inet adr:127.0.0.1  masque:255.0.0.0            adr inet6: ::1/128 scope:hôte           loopback running  mtu:16436  metric:1           packets reçus:81 erreurs:0 :0 overruns:0 frame:0           tx packets:81 errors:0 dropped:0 overruns:0 carrier:0            collisions:0 lg file transmission:0            octets reçus:8783 (8.7 kb) octets transmis:8783 (8.7 kb)   wlan0     link encap:ethernet  hwaddr 88:53:2e:92:81:87              inet adr:192.168.0.6  bcast:192.168.0.255  masque:255.255.255.0           adr inet6: fe80::8a53:2eff:fe92:8187/64 scope:lien           broadcast running multicast  mtu:1500  metric:1            packets reçus:5102 erreurs:0 :0 overruns:0 frame:0           tx packets:3768 errors:0 dropped:0 overruns:0 carrier:0           collisions:0 lg file transmission:1000            octets reçus:6368271 (6.3 mb) octets transmis:448866 (448.8 kb)      milou@milou-laptop:~$ sudo iwlist scan  lo        interface doesn't support scanning.   wlan0     scan completed :           cell 01 - address: e6:65:b2:d8:f5:b4                     channel:7                     frequency:2.442 ghz (channel 7)                      quality=46/70  signal level=-64 dbm                       encryption key:on                     essid:"tchoutchou"                     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=00000126de621140                      extra: last beacon: 68732ms ago                     ie: unknown: 000a5463686f755463686f75                     ie: unknown: 010882848b961224486c                     ie: unknown: 030107                      ie: unknown: 2a0104                     ie: unknown: 32040c183060                     ie: unknown: 2d1a6e1017ffff000001000000000000000000000000000000000000                     ie: unknown: 3d1607050700000000000000000000000000000000000000                      ie: unknown: 3e0100                     ie: unknown: dd180050f2020101000003a4000027a4000042435e0062322f00                     ie: unknown: 7f0101                     ie: unknown: dd07000c4300000000                      ie: unknown: dd1e00904c336e1017ffff000001000000000000000000000000000000000000                     ie: unknown: dd1a00904c3407050700000000000000000000000000000000000000    eth0      interface doesn't support scanning.    milou@milou-laptop:~$ uname -r -m 3.2.0-24-generic i686    milou@milou-laptop:~$ cat /etc/network/interfaces  auto lo iface lo inet loopback    milou@milou-laptop:~$ nm-tool   networkmanager tool    state: connected (global)   - device: eth0 -----------------------------------------------------------------   type:              wired   driver:            r8169    state:             unavailable   default:           no   hw address:        e8:03:9a:33:96:eb     capabilities:     carrier detect:  yes      wired properties     carrier:         off     - device: wlan0  [tchoutchou] --------------------------------------------------   type:              802.11 wifi    driver:            iwlwifi   state:             connected   default:           yes   hw address:        88:53:2e:92:81:87     capabilities:     speed:           60 mb/s      wireless properties     wep encryption:  yes     wpa encryption:  yes     wpa2 encryption: yes     wireless access points (* = current ap)      livebox-4110:    infra, 00:16:ce:7f:48:21, freq 2412 mhz, rate 54 mb/s, strength 32 wpa     freewifi:        infra, f4:ca:e5:e9:7e:55, freq 2442 mhz, rate 54 mb/s, strength 67     freewifi:        infra, f4:ca:e5:cb:0a:55, freq 2417 mhz, rate 54 mb/s, strength 69      *tchoutchou:     infra, e6:65:b2:d8:f5:b4, freq 2442 mhz, rate 54 mb/s, strength 58 wep     bobiks:          infra, 00:1f:9f:c2:76:53, freq 2412 mhz, rate 54 mb/s, strength 30 wpa wpa2      ipv4 settings:     address:         192.168.0.6     prefix:          24 (255.255.255.0)     gateway:         192.168.0.254       dns:             212.27.40.241      dns:             212.27.40.240    milou@milou-laptop:~$ sudo rfkill list 0: hci0: bluetooth     soft blocked: no      hard blocked: no 1: phy0: wireless lan     soft blocked: no     hard blocked: no

please try this:

code:

sudo iwconfig wlan0 power off

is more stable now? if so, can make persistent.

Forum The Ubuntu Forum Community Ubuntu Official Flavours Support Networking & Wireless [xubuntu] Wifi working badly Centrino Advanced-N 6230 Ubuntu 12.04

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