Thread: Wireless Issues with Realtek RTL8187

good day folks!

first of onboard wireless (atheros ieee network connection (802.11b/g)) works flawlessly. use realtek adapter longer ranges.
both worked under ubuntu 11.04. have upgraded ubuntu 11.10 , internal cards works properly.
problem: network manager shows wireless networks available , can choose 1 , connect. when choose network; shows connection strength , connection not brake, unable browse website. ping works on local network. eg cannot ping google.
folloing this thread , many others no avail.

of primary info may need.
running on sony nr260e - ubuntu 11.10

lsusb

code:

hael@vgnnr260e:~$ 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:0001 linux foundation 1.1 root hub bus 004 device 001: id 1d6b:0001 linux foundation 1.1 root hub bus 005 device 001: id 1d6b:0001 linux foundation 1.1 root hub bus 006 device 001: id 1d6b:0001 linux foundation 1.1 root hub bus 007 device 001: id 1d6b:0001 linux foundation 1.1 root hub bus 006 device 002: id 15d9:0a4c trust international b.v. usb+ps/2 optical mouse bus 002 device 004: id 0bda:8187 realtek semiconductor corp. rtl8187 wireless adapter

lsmod

code:

hael@vgnnr260e:~$ lsmod module                  size  used nls_utf8               12493  1  isofs                  39549  1  bnep                   17923  2  rfcomm                 38408  0  bluetooth             148839  10 bnep,rfcomm pci_stub               12550  1  vboxpci                22882  0  vboxnetadp             13328  0  vboxnetflt             27211  0  vboxdrv               251973  3 vboxpci,vboxnetadp,vboxnetflt parport_pc             32114  0  ppdev                  12849  0  r8187l                143412  0  joydev                 17393  0  rtl8187                56323  0  eeprom_93cx6           12653  1 rtl8187 snd_hda_codec_realtek   254125  1  pcmcia                 39822  0  arc4                   12473  2  tifm_7xx1              12937  0  tifm_core              15040  1 tifm_7xx1 snd_hda_intel          24262  2  snd_hda_codec          91754  2 snd_hda_codec_realtek,snd_hda_intel snd_hwdep              13276  1 snd_hda_codec snd_pcm                80435  2 snd_hda_intel,snd_hda_codec snd_seq_midi           13132  0  snd_rawmidi            25241  1 snd_seq_midi yenta_socket           27428  0  pcmcia_rsrc            18367  1 yenta_socket snd_seq_midi_event     14475  1 snd_seq_midi ath5k                 145100  0  ath                    19387  1 ath5k pcmcia_core            21511  3 pcmcia,yenta_socket,pcmcia_rsrc psmouse                73673  0  mac80211              393459  2 rtl8187,ath5k serio_raw              12990  0  snd_seq                51567  2 snd_seq_midi,snd_seq_midi_event sony_laptop            39681  0  binfmt_misc            17292  1  cfg80211              172392  4 rtl8187,ath5k,ath,mac80211 snd_timer              28932  2 snd_pcm,snd_seq snd_seq_device         14172  3 snd_seq_midi,snd_rawmidi,snd_seq i915                  505159  3  drm_kms_helper         32889  1 i915 drm                   192194  4 i915,drm_kms_helper i2c_algo_bit           13199  1 i915 snd                    55902  13 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device video                  18908  1 i915 soundcore              12600  1 snd snd_page_alloc         14115  2 snd_hda_intel,snd_pcm lp                     17455  0  parport                40930  3 parport_pc,ppdev,lp usbhid                 41905  0  hid                    77367  1 usbhid firewire_ohci          35854  0  firewire_core          56937  1 firewire_ohci crc_itu_t              12627  1 firewire_core ahci                   21634  3  libahci                25727  1 ahci sky2                   49317  0

iwconfig

code:

hael@vgnnr260e:~$ iwconfig lo        no wireless extensions.  eth0      no wireless extensions.  wlan0     ieee 802.11bg  essid:"sharama wi fi"             mode:managed  frequency:2.462 ghz  access point: 00:1a:2b:15:2c:9f              bit rate=5.5 mb/s   tx-power=20 dbm              retry  long limit:7   rts thr:off   fragment thr:off           power management:off           link quality=19/70  signal level=-91 dbm             rx invalid nwid:0  rx invalid crypt:0  rx invalid frag:0           tx excessive retries:12  invalid misc:62   missed beacon:0  wlan1     ieee 802.11bg  essid:"sharama wi fi"             mode:managed  frequency:2.462 ghz  access point: 00:1a:2b:15:2c:9f              bit rate=11 mb/s   tx-power=20 dbm              retry  long limit:7   rts thr:off   fragment thr:off           power management:off           link quality=46/70  signal level=-64 dbm             rx invalid nwid:0  rx invalid crypt:0  rx invalid frag:0           tx excessive retries:0  invalid misc:23   missed beacon:0

as can see connected on wlan1. still no internet access

sudo iwlist wlan1 scan

code:

hael:  wlan1     scan completed :           cell 01 - address: 00:1a:2b:15:2c:9f                     channel:11                     frequency:2.462 ghz (channel 11)                     quality=45/70  signal level=-65 dbm                       encryption key:off                     essid:"sharama wi fi"                     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=000000c830ed7fe8                     extra: last beacon: 20ms ago                     ie: unknown: 000d53484152414d41205749204649                     ie: unknown: 010882848b962430486c                     ie: unknown: 03010b                     ie: unknown: 2a0104                     ie: unknown: 2f0104                     ie: unknown: 32040c121860                     ie: unknown: dd090010180238f4000000                     ie: unknown: dd180050f2020101800003a4000027a4000042435e0062322f00

iwlist chan

code:

hael@vgnnr260e:~$ iwlist chan lo        no frequency information.  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           current frequency:2.462 ghz (channel 11)  wlan1     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)

cat /etc/resolv.conf

code:

hael@vgnnr260e:~$ cat /etc/resolv.conf # generated networkmanager domain home search home nameserver 196.3.132.153 nameserver 196.3.132.154 michael@vgnnr260e:~$

hael@vgnnr260e:~$ sudo gedit /etc/modprobe.d/blacklist.conf

code:

# file lists modules don't want loaded # alias expansion, other driver loaded # device instead.  # evbug debug tool should loaded explicitly blacklist evbug  # these drivers simple, hid drivers preferred blacklist usbmouse blacklist usbkbd  # replaced e100 blacklist eepro100  # replaced tulip blacklist de4x5  # causes no end of confusion creating unexpected network interfaces blacklist eth1394  # snd_intel8x0m can interfere snd_intel8x0, doesn't seem support # hardware on own (ubuntu bug #2011, #6810) blacklist snd_intel8x0m  # conflicts dvb driver (which better handling device) blacklist snd_aw2  # causes failure suspend on hp compaq nc6000 (ubuntu: #10306) blacklist i2c_i801  # replaced p54pci blacklist prism54  # replaced b43 , ssb. blacklist bcm43xx  # apps use garmin usb driver directly (ubuntu: #114565) blacklist garmin_gps  # replaced asus-laptop (ubuntu: #184721) blacklist asus_acpi  # low-quality, noise when being used sound playback, causes # hangs @ desktop session start (ubuntu: #246969) blacklist snd_pcsp  # ugly , loud noise, getting on everyone's nerves; should done # nice pulseaudio bing (ubuntu: #77010) blacklist pcspkr  # edac driver amd76x clashes agp driver preventing aperture # being initialised (ubuntu: #297750). blacklist driver # continues build , installable few cases # needed. blacklist amd76x_edac

route -n

code:

hael@vgnnr260e:~$ route -n 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 169.254.0.0     0.0.0.0         255.255.0.0     u     1000   0        0 wlan0 192.168.1.0     0.0.0.0         255.255.255.0   u     2      0        0 wlan1 192.168.1.0     0.0.0.0         255.255.255.0   u     2      0        0 wlan0

dmesg

code:

hael@vgnnr260e:~$ dmesg | grep 8187 [    0.581874] acpi: deprecated procfs i/f battery loaded, please retry config_acpi_procfs_power cleared [    1.818769] scsi 2:0:0:0: direct-access     ata      fujitsu mhy2200b 0000 pq: 0 ansi: 5 [   18.998187] cfg80211: updating information on frequency 2472 mhz 20 mhz width channel regulatory rule: [   18.999280] ieee80211 phy1: hwaddr 00:c0:ca:51:8d:73, rtl8187vb (default) v1 + rtl8225z2, rfkill mask 2 [   19.015411] rtl8187: customer id 0xff [   19.016790] registered led device: rtl8187-phy1::radio [   19.017962] registered led device: rtl8187-phy1::tx [   19.019356] registered led device: rtl8187-phy1::rx [   19.019774] rtl8187: wireless switch on [   19.021298] usbcore: registered new interface driver rtl8187 [   19.063829] linux kernel driver rtl8187l based wlan cards [   19.063834] rtl8187l: initializing module [   19.063836] rtl8187l: wireless extensions version 22 [   19.063839] rtl8187l: initializing proc filesystem [   19.063890] usbcore: registered new interface driver rtl8187l [ 6712.575144] ieee80211 phy2: hwaddr 00:c0:ca:51:8d:73, rtl8187vb (default) v1 + rtl8225z2, rfkill mask 2 [ 6712.589723] rtl8187: customer id 0xff [ 6712.589831] registered led device: rtl8187-phy2::radio [ 6712.589891] registered led device: rtl8187-phy2::tx [ 6712.589949] registered led device: rtl8187-phy2::rx [ 6712.590329] rtl8187: wireless switch on

i provide other details may need.

i did other testing , ruled out possibility of adapter being defective.

Forum The Ubuntu Forum Community Ubuntu Official Flavours Support Networking & Wireless [ubuntu] Wireless Issues with Realtek RTL8187

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