Linux Wireless network not working in Ubuntu 11.04

Pragadheesh · Sep 13, 2011

Hi,

I recently installed Ubuntu11.04. I am having trouble in connecting to my wireless internet connection. Below are the details I got from various commands which might be helpful.

1 ) Machine Brand and Model (PC/Laptop):

Code:

     Lenovo Ideapad Laptop Z575 with AMD A6 processor

2 ) Wireless Brand, Model and Wireless Chipset:

Code:

  $ lspci

  00:00.0 Host bridge: Advanced Micro Devices [AMD] Device 1705

  00:01.0 VGA compatible controller: ATI Technologies Inc Device 9647

  00:01.1 Audio device: ATI Technologies Inc Device 1714

  00:04.0 PCI bridge: Advanced Micro Devices [AMD] Device 1709

  00:06.0 PCI bridge: Advanced Micro Devices [AMD] Device 170b

  00:11.0 SATA controller: Advanced Micro Devices [AMD] Hudson SATA Controller [AHCI mode]

  00:12.0 USB Controller: Advanced Micro Devices [AMD] Hudson USB OHCI Controller (rev 11)

  00:12.2 USB Controller: Advanced Micro Devices [AMD] Hudson USB EHCI Controller (rev 11)

  00:13.0 USB Controller: Advanced Micro Devices [AMD] Hudson USB OHCI Controller (rev 11)

  00:13.2 USB Controller: Advanced Micro Devices [AMD] Hudson USB EHCI Controller (rev 11)

  00:14.0 SMBus: Advanced Micro Devices [AMD] Hudson SMBus Controller (rev 13)

  00:14.2 Audio device: Advanced Micro Devices [AMD] Hudson Azalia Controller (rev 01)

  00:14.3 ISA bridge: Advanced Micro Devices [AMD] Hudson LPC Bridge (rev 11)

  00:14.4 PCI bridge: Advanced Micro Devices [AMD] Hudson PCI Bridge (rev 40)

  00:18.0 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 0 (rev 43)

  00:18.1 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 1

  00:18.2 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 2

  00:18.3 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 3

  00:18.4 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 4

  00:18.5 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 6

  00:18.6 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 5

  00:18.7 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 7

  01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 05)

  02:00.0 Network controller: Ralink corp. RT3090 Wireless 802.11n 1T/1R PCIe

3 ) check interface:

Code:

 $ ifconfig

  eth0      Link encap:Ethernet  HWaddr f0:de:f1:77:55:1d  

            UP BROADCAST MULTICAST  MTU:1500  Metric:1

            RX packets:0 errors:0 dropped:0 overruns:0 frame:0

            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

            collisions:0 txqueuelen:1000

            RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

            Interrupt:40 Base address:0xe000

   

  lo        Link encap:Local Loopback  

            inet addr:127.0.0.1  Mask:255.0.0.0

            inet6 addr: ::1/128 Scope:Host

            UP LOOPBACK RUNNING  MTU:16436  Metric:1

            RX packets:388 errors:0 dropped:0 overruns:0 frame:0

            TX packets:388 errors:0 dropped:0 overruns:0 carrier:0

            collisions:0 txqueuelen:0

            RX bytes:29392 (29.3 KB)  TX bytes:29392 (29.3 KB)

   

  wlan0     Link encap:Ethernet  HWaddr 38:59:f9:ab:f3:13  

            UP BROADCAST MULTICAST  MTU:1500  Metric:1

            RX packets:0 errors:0 dropped:0 overruns:0 frame:0

            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

            collisions:0 txqueuelen:1000

            RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

4 ) Check for modules:

Code:

 $ lsmod

  Module                  Size  Used by

  parport_pc             36959  0

  ppdev                  17113  0

  vesafb                 13761  1

  joydev                 17606  0

  binfmt_misc            17565  1

  snd_hda_codec_realtek   336693  1

  rt2860sta             543010  0

  arc4                   12529  2

  acer_wmi               23771  0

  rt2800pci              18535  0

  snd_hda_codec_hdmi     28103  1

  rt2800lib              45181  1 rt2800pci

  crc_ccitt              12667  2 rt2860sta,rt2800lib

  rt2x00pci              14322  1 rt2800pci

  rt2x00lib              49235  3 rt2800pci,rt2800lib,rt2x00pci

  snd_seq_midi           13324  0

  snd_hda_intel          33211  2

  snd_hda_codec         103804  3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel

  snd_hwdep              13604  1 snd_hda_codec

  psmouse                73535  0

  mac80211              294370  3 rt2800lib,rt2x00pci,rt2x00lib

  snd_rawmidi            30486  1 snd_seq_midi

  uvcvideo               72195  0

  snd_pcm                96625  3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec

  snd_seq_midi_event     14899  1 snd_seq_midi

  serio_raw              13166  0

  videodev               82052  1 uvcvideo

  v4l2_compat_ioctl32    17078  1 videodev

  snd_seq                61621  2 snd_seq_midi,snd_seq_midi_event

  k10temp                13119  0

  i2c_piix4              13303  0

  snd_timer              29602  2 snd_pcm,snd_seq

  cfg80211              178528  2 rt2x00lib,mac80211

  snd_seq_device         14462  3 snd_seq_midi,snd_rawmidi,snd_seq

  snd                    67382  14 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_rawmidi,snd_pcm,snd_seq,snd_timer,snd_seq_device

  eeprom_93cx6           12725  1 rt2800pci

  soundcore              12680  1 snd

  snd_page_alloc         18529  2 snd_hda_intel,snd_pcm

  ideapad_laptop         13494  0

  sparse_keymap          13898  2 acer_wmi,ideapad_laptop

  video                  19438  0

  lp                     17825  0

  parport                46458  3 parport_pc,ppdev,lp

  ahci                   25951  3

  libahci                26642  1 ahci

  r8169                  48022  0

5) Network configuration:

Code:

 sudo lshw -C network

    *-network               

         description: Ethernet interface

         product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller

         vendor: Realtek Semiconductor Co., Ltd.

         physical id: 0

         bus info: pci@0000:01:00.0

         logical name: eth0

         version: 05

         serial: f0:de:f1:77:55:1d

         size: 10Mbit/s

         capacity: 100Mbit/s

         width: 64 bits

         clock: 33MHz

         capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation

         configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half latency=0 link=no multicast=yes port=MII speed=10Mbit/s

         resources: irq:40 ioport:1000(size=256) memory:f0004000-f0004fff memory:f0000000-f0003fff

    *-network

         description: Wireless interface

         product: RT3090 Wireless 802.11n 1T/1R PCIe

         vendor: Ralink corp.

         physical id: 0

         bus info: pci@0000:02:00.0

         logical name: wlan0

         version: 00

         serial: 38:59:f9:ab:f3:13

         width: 32 bits

         clock: 33MHz

         capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless

         configuration: broadcast=yes driver=rt2800pci driverversion=2.6.38-8-generic firmware=0.11 latency=0 link=no multicast=yes wireless=IEEE 802.11bgn

         resources: irq:18 memory:f0100000-f010ffff

6) Scan for networks:

Code:

 iwlist scan

  

  wlan0     Failed to read scan data : Network is down

7) Ubuntu Version:

Code:

 lsb_release -d

  Description:     Ubuntu 11.04

8. Kernel/architecture (including 32 vs. 64 bit):

Code:

uname -mr

  2.6.38-8-generic x86_64

9) Restarting the network:

Code:

  sudo /etc/init.d/networking restart

   * Running /etc/init.d/networking restart is deprecated because it may not enable again some interfaces

   * Reconfiguring network interfaces...

But my internet works fine with Windows 7 which is the other OS in my laptop. Kindly help me in solving this problem. Thanks in advance.

Dark Star · Sep 13, 2011

02:00.0 Network controller: Ralink corp. RT3090 Wireless 802.11n 1T/1R PCIe

The problems lies here. None of the module is being used by the driver. There are couple of solutions for your problem.

1. Search for your wifi drivers @ your vendor site an install it via ndiswrapper.

2. What else you can do is check System -> Additional Drivers for third party restricted drivers if available.

3. Try configuring the wireless lan by iwconfig command.

4. For drivers you can forcibly use the preloaded module by modprobe command

Pragadheesh · Sep 14, 2011

Thanks a lot for your reply. Unfortunately my wireless was off. Sorry for not checking that.

I have edited my original post(ifconfig and sudo lshw -C network) with updated results after ensuring that the wireless is On.Here are the outputs of few other commands. Kindly help me in fixing this.

iwlist scan:

Code:

$ iwlist scan

  lo        Interface doesn't support scanning.

  

  eth0      Interface doesn't support scanning.

  

  wlan0     No scan results

ifconfigand rfkill

Code:

sudo ifconfig wlan0 up

  unnamed:~$

  unnamed:~$ rfkill list all

  0: ideapad_wlan: Wireless LAN

              Soft blocked: no

              Hard blocked: no

  1: phy0: Wireless LAN

              Soft blocked: no

              Hard blocked: no

  2: acer-wireless: Wireless LAN

              Soft blocked: yes

              Hard blocked: no

nm-tool

Code:

nm-tool

  

  NetworkManager Tool

  

  State: disconnected

  

  - Device: eth0 -----------------------------------------------------------------

    Type:              Wired

    Driver:            r8169

    State:             unavailable

    Default:           no

    HW Address:        F0:DE:F1:77:55:1D

  

    Capabilities:

      Carrier Detect:  yes

      Speed:           10 Mb/s

  

    Wired Properties

      Carrier:         off

  

  

  - Device: wlan0 ----------------------------------------------------------------

    Type:              802.11 WiFi

    Driver:            rt2800pci

    State:             unavailable

    Default:           no

    HW Address:        38:59:F9:AB:F3:13

  

    Capabilities:

  

    Wireless Properties

      WEP Encryption:  yes

      WPA Encryption:  yes

      WPA2 Encryption: yes

  

    Wireless Access Points

Pragadheesh · Sep 14, 2011

Thanks a lot for your reply. Unfortunately my wireless was off. Sorry for not checking that.

I have edited my original post(ifconfig and sudo lshw -C network) with updated results after ensuring that the wireless is On.Here are the outputs of few other commands. Kindly help me in fixing this.

iwlist scan:

Code:

$ iwlist scan
  lo        Interface doesn't support scanning.
  
  eth0      Interface doesn't support scanning.
  
  wlan0     No scan results

ifconfigand rfkill

Code:

sudo ifconfig wlan0 up
  unnamed:~$
  unnamed:~$ rfkill list all
  0: ideapad_wlan: Wireless LAN
              Soft blocked: no
              Hard blocked: no
  1: phy0: Wireless LAN
              Soft blocked: no
              Hard blocked: no
  2: acer-wireless: Wireless LAN
              Soft blocked: yes
              Hard blocked: no

nm-tool

Code:

nm-tool
  
  NetworkManager Tool
  
  State: disconnected
  
  - Device: eth0 -----------------------------------------------------------------
    Type:              Wired
    Driver:            r8169
    State:             unavailable
    Default:           no
    HW Address:        F0:DE:F1:77:55:1D
  
    Capabilities:
      Carrier Detect:  yes
      Speed:           10 Mb/s
  
    Wired Properties
      Carrier:         off
  
  
  - Device: wlan0 ----------------------------------------------------------------
    Type:              802.11 WiFi
    Driver:            rt2800pci
    State:             unavailable
    Default:           no
    HW Address:        38:59:F9:AB:F3:13
  
    Capabilities:
  
    Wireless Properties
      WEP Encryption:  yes
      WPA Encryption:  yes
      WPA2 Encryption: yes
  
    Wireless Access Points

Linux Wireless network not working in Ubuntu 11.04

Pragadheesh

Dark Star

Pragadheesh

Pragadheesh