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Hi all I just installed ubuntu 10.10 on my laptop Dell Inspiron 1525. Wireless internet is not working. I installed wicd network manager and I am able to see the ...
  1. #1
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    Cannot obtain an IP address

    Hi all

    I just installed ubuntu 10.10 on my laptop Dell Inspiron 1525. Wireless internet is not working. I installed wicd network manager and I am able to see the available wireless networks. My wireless connection is encrypted. I have tried all encrypted options with the key but no avail. It says "Cannot obtain an IP address" after validating authentication. Kindly help.

  2. #2
    Linux Engineer nujinini's Avatar
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    Have you tried

    Systems > Administration > Drivers ?

    Please read this and post outputs here too.
    nujinini
    Linux User #489667

  3. #3
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    I followed that instructions and got these results. Thanks for helping
    ============ lspci ============
    00:00.0 Host bridge [0600]: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub [8086:2a00] (rev 0c)
    Subsystem: Dell Device [1028:022f]
    Kernel driver in use: agpgart-intel
    Kernel modules: intel-agp
    00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller [8086:2a02] (rev 0c)
    Subsystem: Dell Device [1028:022f]
    Kernel driver in use: i915
    Kernel modules: i915
    00:02.1 Display controller [0380]: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller [8086:2a03] (rev 0c)
    Subsystem: Dell Device [1028:022f]
    00:1a.0 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #4 [8086:2834] (rev 02)
    Subsystem: Dell Device [1028:022f]
    Kernel driver in use: uhci_hcd
    00:1a.1 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 [8086:2835] (rev 02)
    Subsystem: Dell Device [1028:022f]
    Kernel driver in use: uhci_hcd
    00:1a.7 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 [8086:283a] (rev 02)
    Subsystem: Dell Device [1028:022f]
    Kernel driver in use: ehci_hcd
    00:1b.0 Audio device [0403]: Intel Corporation 82801H (ICH8 Family) HD Audio Controller [8086:284b] (rev 02)
    Subsystem: Dell Device [1028:022f]
    Kernel driver in use: HDA Intel
    Kernel modules: snd-hda-intel
    00:1c.0 PCI bridge [0604]: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 [8086:283f] (rev 02)
    Kernel driver in use: pcieport
    Kernel modules: shpchp
    00:1c.1 PCI bridge [0604]: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2 [8086:2841] (rev 02)
    Kernel driver in use: pcieport
    Kernel modules: shpchp
    00:1c.4 PCI bridge [0604]: Intel Corporation 82801H (ICH8 Family) PCI Express Port 5 [8086:2847] (rev 02)
    Kernel driver in use: pcieport
    Kernel modules: shpchp
    00:1d.0 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 [8086:2830] (rev 02)
    Subsystem: Dell Device [1028:022f]
    Kernel driver in use: uhci_hcd
    00:1d.1 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 [8086:2831] (rev 02)
    Subsystem: Dell Device [1028:022f]
    Kernel driver in use: uhci_hcd
    00:1d.2 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 [8086:2832] (rev 02)
    Subsystem: Dell Device [1028:022f]
    Kernel driver in use: uhci_hcd
    00:1d.7 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 [8086:2836] (rev 02)
    Subsystem: Dell Device [1028:022f]
    Kernel driver in use: ehci_hcd
    00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge [8086:2448] (rev f2)
    00:1f.0 ISA bridge [0601]: Intel Corporation 82801HEM (ICH8M) LPC Interface Controller [8086:2815] (rev 02)
    Subsystem: Dell Device [1028:022f]
    Kernel modules: iTCO_wdt
    00:1f.1 IDE interface [0101]: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) IDE Controller [8086:2850] (rev 02)
    Subsystem: Dell Device [1028:022f]
    Kernel driver in use: ata_piix
    00:1f.2 SATA controller [0106]: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA AHCI Controller [8086:2829] (rev 02)
    Subsystem: Dell Device [1028:022f]
    Kernel driver in use: ahci
    Kernel modules: ahci
    00:1f.3 SMBus [0c05]: Intel Corporation 82801H (ICH8 Family) SMBus Controller [8086:283e] (rev 02)
    Subsystem: Dell Device [1028:022f]
    Kernel modules: i2c-i801
    02:09.0 FireWire (IEEE 1394) [0c00]: Ricoh Co Ltd R5C832 IEEE 1394 Controller [1180:0832] (rev 05)
    Subsystem: Dell Device [1028:022f]
    Kernel driver in use: firewire_ohci
    Kernel modules: firewire-ohci, ohci1394
    02:09.1 SD Host controller [0805]: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter [1180:0822] (rev 22)
    Subsystem: Dell Device [1028:022f]
    Kernel driver in use: sdhci-pci
    Kernel modules: sdhci-pci
    02:09.2 System peripheral [0880]: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter [1180:0592] (rev 12)
    Subsystem: Dell Device [1028:022f]
    02:09.3 System peripheral [0880]: Ricoh Co Ltd xD-Picture Card Controller [1180:0852] (rev 12)
    Subsystem: Dell Device [1028:022f]
    Kernel driver in use: r852
    Kernel modules: r852
    09:00.0 Ethernet controller [0200]: Marvell Technology Group Ltd. 88E8040 PCI-E Fast Ethernet Controller [11ab:4354] (rev 12)
    Subsystem: Dell Device [1028:022f]
    Kernel driver in use: sky2
    Kernel modules: sky2
    0b:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01)
    Subsystem: Dell Wireless 1395 WLAN Mini-Card [1028:000b]
    Kernel driver in use: b43-pci-bridge
    Kernel modules: ssb

    ============ lsusb ============
    Bus 007 Device 005: ID 0a5c:4503 Broadcom Corp.
    Bus 007 Device 004: ID 0a5c:4502 Broadcom Corp. Keyboard (Boot Interface Subclass)
    Bus 007 Device 003: ID 413c:8126 Dell Computer Corp. Wireless 355 Bluetooth
    Bus 007 Device 002: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth)
    Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 006 Device 002: ID 0458:002e KYE Systems Corp. (Mouse Systems)
    Bus 006 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 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 003 Device 004: ID 05a9:2640 OmniVision Technologies, Inc. OV2640 Webcam
    Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

    ============ lsmod ============
    Module Size Used by
    rfcomm 33811 4
    binfmt_misc 6599 1
    sco 7998 2
    bnep 9542 2
    l2cap 37008 16 rfcomm,bnep
    parport_pc 26058 0
    ppdev 5556 0
    snd_hda_codec_idt 54887 1
    snd_hda_codec_intelhdmi 9812 1
    joydev 8735 0
    arc4 1165 2
    snd_hda_intel 22107 2
    snd_hda_codec 87552 3 snd_hda_codec_idt,snd_hda_codec_intelhdmi,snd_hda_ intel
    snd_hwdep 5040 1 snd_hda_codec
    snd_pcm 71475 2 snd_hda_intel,snd_hda_codec
    i915 291004 3
    snd_seq_midi 4588 0
    snd_rawmidi 17783 1 snd_seq_midi
    snd_seq_midi_event 6047 1 snd_seq_midi
    b43 168681 0
    drm_kms_helper 30200 1 i915
    snd_seq 47174 2 snd_seq_midi,snd_seq_midi_event
    mac80211 231541 1 b43
    snd_timer 19067 2 snd_pcm,snd_seq
    drm 168054 4 i915,drm_kms_helper
    snd_seq_device 5744 3 snd_seq_midi,snd_rawmidi,snd_seq
    btusb 10969 2
    dell_wmi 2852 0
    bluetooth 50500 9 rfcomm,sco,bnep,l2cap,btusb
    uvcvideo 55847 0
    r852 9536 0
    dell_laptop 5730 0
    cfg80211 144470 2 b43,mac80211
    sm_common 3285 1 r852
    nand 34905 2 r852,sm_common
    nand_ids 2903 1 nand
    videodev 43098 1 uvcvideo
    snd 49006 13 snd_hda_codec_idt,snd_hda_intel,snd_hda_codec,snd_ hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_se q_device
    dcdbas 5402 1 dell_laptop
    v4l1_compat 13359 2 uvcvideo,videodev
    psmouse 59033 0
    nand_ecc 3938 1 nand
    mtd 18877 2 sm_common,nand
    serio_raw 4022 0
    intel_agp 26360 2 i915
    soundcore 880 1 snd
    i2c_algo_bit 5168 1 i915
    snd_page_alloc 7120 2 snd_hda_intel,snd_pcm
    video 18712 1 i915
    agpgart 32011 2 drm,intel_agp
    output 1883 1 video
    lp 7342 0
    parport 31492 3 parport_pc,ppdev,lp
    usbhid 36882 0
    hid 67742 1 usbhid
    sdhci_pci 6339 0
    firewire_ohci 21106 0
    sdhci 15890 1 sdhci_pci
    led_class 2633 2 b43,sdhci
    ahci 19013 0
    ssb 39288 1 b43
    firewire_core 46643 1 firewire_ohci
    libahci 21667 2 ahci
    crc_itu_t 1383 1 firewire_core
    sky2 45127 0

    ============ dmesg-firmware ============
    [ 19.672671] b43-phy0: Loading firmware version 478.104 (2008-07-01 00:50:23)
    [ 31.868131] b43-phy0: Loading firmware version 478.104 (2008-07-01 00:50:23)
    [ 38.241102] b43-phy0: Loading firmware version 478.104 (2008-07-01 00:50:23)
    [ 84.476142] b43-phy0: Loading firmware version 478.104 (2008-07-01 00:50:23)
    [ 90.456118] b43-phy0: Loading firmware version 478.104 (2008-07-01 00:50:23)
    [ 97.684104] b43-phy0: Loading firmware version 478.104 (2008-07-01 00:50:23)
    [ 103.596172] b43-phy0: Loading firmware version 478.104 (2008-07-01 00:50:23)
    [ 109.464168] b43-phy0: Loading firmware version 478.104 (2008-07-01 00:50:23)
    [ 115.416147] b43-phy0: Loading firmware version 478.104 (2008-07-01 00:50:23)
    [ 125.204116] b43-phy0: Loading firmware version 478.104 (2008-07-01 00:50:23)
    [ 134.709159] b43-phy0: Loading firmware version 478.104 (2008-07-01 00:50:23)

    ============ kernel version ============
    2.6.35-22-generic

    ============ ifconfig ============
    eth0 Link encap:Ethernet HWaddr 00:1d:09:59:13:7f
    inet addr:192.168.1.70 Bcast:192.168.1.255 Mask:255.255.255.0
    inet6 addr: fe80::21d:9ff:fe59:137f/64 Scope:Link
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    RX packets:2342 errors:0 dropped:0 overruns:0 frame:0
    TX packets:2218 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:1000
    RX bytes:1868275 (1.8 MB) TX bytes:456224 (456.2 KB)
    Interrupt:16

    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:12 errors:0 dropped:0 overruns:0 frame:0
    TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:720 (720.0 B) TX bytes:720 (720.0 B)


    ============ iwconfig ============
    wlan0 IEEE 802.11bg ESSID:off/any
    Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated
    Tx-Power=20 dBm
    Retry long limit:7 RTS thr:off Fragment thr:off
    Power Management:off
    Last edited by homeaway; 11-19-2010 at 01:33 PM.

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