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Thread: Cannot connect to WLAN / Atheros AR5001 / Ubuntu 11.04


basically wireless adapter sees network fails when obtaining ip address dhcp. running ubuntu 11.04 64bit on toshiba satellite laptop atheros ar5001 wireless adapter using ath5k driver. connected via wired connection. wireless work if boot live usb.

background on issue:
installed 11.04 dual boot win 7 , after installation had wireless connection. when waking suspend fail connect. happen maybe once every couple days or so. not connect if rebooted. go wired connection or walk away , in few hours wake again , have no problem connecting. searched internet solution , found had success switching wicd. installed wicd , removed network manager. after went broken wireless connection wlan catastrophe. never establish wireless connection wicd although see wlan. stall trying obtain ip address regardless if used static ip or not. figured better off network manager reinstalled , removed wicd. still have no wireless , there no tray icon there network manager. searching network manager in applications yields nothing shows being installed in ubuntu software center. decided best seek assistance before try "fix" anymore.

sudo lshw -c network
code:
laura@laura-satellite-a215:~$ sudo lshw -c network [sudo] password laura:    *-network                       description: ethernet interface        product: rtl8101e/rtl8102e pci express fast ethernet controller        vendor: realtek semiconductor co., ltd.        physical id: 0        bus info: pci@0000:0e:00.0        logical name: eth0        version: 01        serial: 00:1b:38:11:8a:2f        size: 100mbit/s        capacity: 100mbit/s        width: 64 bits        clock: 33mhz        capabilities: pm vpd msi pciexpress bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation        configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3lk-napi duplex=full ip=192.168.1.69 latency=0 link=yes multicast=yes port=mii speed=100mbit/s        resources: irq:43 ioport:a000(size=256) memory:f8300000-f8300fff memory:f8a00000-f8a1ffff   *-network        description: wireless interface        product: ar5001 wireless network adapter        vendor: atheros communications inc.        physical id: 0        bus info: pci@0000:14:00.0        logical name: wlan0        version: 01        serial: 00:1b:9e:28:90:eb        width: 64 bits        clock: 33mhz        capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless        configuration: broadcast=yes driver=ath5k driverversion=2.6.38-13-generic firmware=n/a latency=0 link=no multicast=yes wireless=ieee 802.11bg        resources: irq:19 memory:f8200000-f820ffff
iwconfig
code:
laura@laura-satellite-a215:~$ iwconfig lo        no wireless extensions.  eth0      no wireless extensions.  wlan0     ieee 802.11bg  essid:off/any             mode:managed  access point: not-associated   tx-power=20 dbm              retry  long limit:7   rts thr:off   fragment thr:off           power management:off            vboxnet0  no wireless extensions.
sudo iwlist scan
code:
laura@laura-satellite-a215:~$ sudo iwlist scan lo        interface doesn't support scanning.  eth0      interface doesn't support scanning.  wlan0     scan completed :           cell 01 - address: b0:e7:54:57:5f:b1                     channel:6                     frequency:2.437 ghz (channel 6)                     quality=70/70  signal level=-40 dbm                       encryption key:off                     essid:"ryan&laura"                     bit rates:1 mb/s; 2 mb/s; 5.5 mb/s; 6 mb/s; 9 mb/s                               11 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=000000c55808ea4f                     extra: last beacon: 330ms ago                     ie: unknown: 000a7279616e266c61757261                     ie: unknown: 010882848b0c12961824                     ie: unknown: 030106                     ie: unknown: 0706555320010b1b                     ie: unknown: 2a0100                     ie: unknown: 32043048606c  vboxnet0  interface doesn't support scanning.
rfkill list all
code:
laura@laura-satellite-a215:~$ rfkill list 0: phy0: wireless lan     soft blocked: no     hard blocked: no
lspci -nnk | grep -ia2 net
code:
laura@laura-satellite-a215:~$ lspci -nnk | grep -ia2 net 0e:00.0 ethernet controller [0200]: realtek semiconductor co., ltd. rtl8101e/rtl8102e pci express fast ethernet controller [10ec:8136] (rev 01)     subsystem: toshiba america info systems device [1179:ff00]     kernel driver in use: r8169 -- 14:00.0 ethernet controller [0200]: atheros communications inc. ar5001 wireless network adapter [168c:001c] (rev 01)     subsystem: askey computer corp. device [144f:7128]     kernel driver in use: ath5k
lsmod
code:
laura@laura-satellite-a215:~$ lsmod module                  size  used binfmt_misc            17565  1  vboxnetadp             13340  0  vboxnetflt             28297  0  vboxdrv               252684  2 vboxnetadp,vboxnetflt parport_pc             36959  0  ppdev                  17113  0  snd_hda_codec_realtek   336771  1  snd_hda_intel          33176  2  uvcvideo               72195  0  snd_hda_codec         103804  2 snd_hda_codec_realtek,snd_hda_intel snd_hwdep              13604  1 snd_hda_codec radeon                982182  3  snd_pcm                96391  2 snd_hda_intel,snd_hda_codec videodev               82052  1 uvcvideo arc4                   12529  2  snd_seq_midi           13324  0  joydev                 17606  0  ath5k                 153264  0  snd_rawmidi            30486  1 snd_seq_midi v4l2_compat_ioctl32    17078  1 videodev ath                    23779  1 ath5k ttm                    76664  1 radeon drm_kms_helper         42394  1 radeon drm                   227534  5 radeon,ttm,drm_kms_helper snd_seq_midi_event     14899  1 snd_seq_midi i2c_algo_bit           13400  1 radeon mac80211              296672  1 ath5k pcmcia                 49166  0  snd_seq                61621  2 snd_seq_midi,snd_seq_midi_event tifm_7xx1              13042  0  snd_timer              29602  2 snd_pcm,snd_seq snd_seq_device         14462  3 snd_seq_midi,snd_rawmidi,snd_seq tifm_core              15654  1 tifm_7xx1 psmouse                73535  0  edac_core              53845  0  yenta_socket           27846  0  pcmcia_rsrc            18372  1 yenta_socket sparse_keymap          13898  0  video                  19438  0  serio_raw              13166  0  sp5100_tco             13744  0  edac_mce_amd           23464  0  pcmcia_core            22569  3 pcmcia,yenta_socket,pcmcia_rsrc cfg80211              181865  3 ath5k,ath,mac80211 shpchp                 37297  0  k8temp                 13016  0  lp                     17825  0  i2c_piix4              13303  0  snd                    67382  13 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device parport                46458  3 parport_pc,ppdev,lp soundcore              12680  1 snd snd_page_alloc         18529  2 snd_hda_intel,snd_pcm usbhid                 46956  0  hid                    91020  1 usbhid firewire_ohci          40370  0  firewire_core          62646  1 firewire_ohci sdhci_pci              13989  0  ahci                   25951  5  crc_itu_t              12707  1 firewire_core sdhci                  27387  1 sdhci_pci r8169                  48022  0  libahci                26642  1 ahci pata_atiixp            13165  0
nm-tool
code:
laura@laura-satellite-a215:~$ nm-tool  networkmanager tool  state: connected  - device: eth0  [auto eth0] ----------------------------------------------------   type:              wired   driver:            r8169   state:             connected   default:           yes   hw address:        00:1b:38:11:8a:2f    capabilities:     carrier detect:  yes     speed:           100 mb/s    wired properties     carrier:         on    ipv4 settings:     address:         192.168.1.69     prefix:          24 (255.255.255.0)     gateway:         192.168.1.254      dns:             192.168.1.254   - device: wlan0 ----------------------------------------------------------------   type:              802.11 wifi   driver:            ath5k   state:             disconnected   default:           no   hw address:        00:1b:9e:28:90:eb    capabilities:    wireless properties     wep encryption:  yes     wpa encryption:  yes     wpa2 encryption: yes    wireless access points      ryan&laura:      infra, b0:e7:54:57:5f:b1, freq 2437 mhz, rate 54 mb/s, strength 94

help....it appreciated


Forum The Ubuntu Forum Community Ubuntu Official Flavours Support Networking & Wireless [ubuntu] Cannot connect to WLAN / Atheros AR5001 / Ubuntu 11.04


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