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Thread: Wireless will access local network but not internet.

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  1. #1
    Join Date
    May 2007
    Location
    Maryland US
    Beans
    10
    Distro
    Ubuntu 8.04 Hardy Heron

    Wireless will access local network but not internet.

    I hope someone can help me with this. I am new to Ubuntu and Linux and I'm trying to learn.
    I have a Dell Inspiron 5160 laptop which is a dual boot between Windows XP and Ubuntu 8.04. The wireless card is a Dlink that uses the Atheros chipset. The info on the chipset (obtained via lspci -v) is as follows:

    Ethernet controller: Atheros Communications Inc. AR5212/AR5213 Multiprotocol MAC/baseband processor (rev 01)
    Subsystem: D-Link System Inc D-link DWL-G650 (Rev B3,B5) Wireless cardbus adapter
    Flags: bus master, medium devsel, latency 168, IRQ 16
    Memory at 68000000 (32-bit, non-prefetchable) [size=64K]
    I installed Ubuntu via Wubi if that makes any difference.
    My system consists of a cable modem hooked to a Linksys WRT54G router running WEP encryption (yes I know not that secure). The IP addresses are obtained via DHCP.
    For the first few days this system connected to internet fine in Ubuntu. This morning when I turned the machine on, I fired up the browser and nothing would connect. I also tried Pidgin and that would not connect either. Both were working fine last night. I then tried accessing some files on other machines in my local network and that DID work. I also rebooted into Windows and verified that the internet connection was working. It was.
    I then went back into Ubuntu and tried pinging several sites from the terminal (Yahoo, Google, and a domain that I own) and they did ping fine.
    I searched the forum but was unable to find anything that applied directly to my situation and the few things I saw that were similar did not help. Here is some more info that I obtained that I thought might be needed to diagnose my problem:
    From lspci:

    00:00.0 Host bridge: Intel Corporation 82852/82855 GM/GME/PM/GMV Processor to I/O Controller (rev 02)
    00:00.1 System peripheral: Intel Corporation 82852/82855 GM/GME/PM/GMV Processor to I/O Controller (rev 02)
    00:00.3 System peripheral: Intel Corporation 82852/82855 GM/GME/PM/GMV Processor to I/O Controller (rev 02)
    00:01.0 PCI bridge: Intel Corporation 82852/82855 GM/GME/PM/GMV Processor to AGP Controller (rev 02)
    00:1d.0 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1 (rev 01)
    00:1d.1 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2 (rev 01)
    00:1d.2 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3 (rev 01)
    00:1d.7 USB Controller: Intel Corporation 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI Controller (rev 01)
    00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 81)
    00:1f.0 ISA bridge: Intel Corporation 82801DBM (ICH4-M) LPC Interface Bridge (rev 01)
    00:1f.1 IDE interface: Intel Corporation 82801DBM (ICH4-M) IDE Controller (rev 01)
    00:1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 01)
    00:1f.6 Modem: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Modem Controller (rev 01)
    01:00.0 VGA compatible controller: nVidia Corporation NV34M [GeForce FX Go5200 64M] (rev a1)
    02:01.0 Ethernet controller: Broadcom Corporation BCM4401-B0 100Base-TX (rev 02)
    02:04.0 CardBus bridge: Texas Instruments PCI4510 PC card Cardbus Controller (rev 02)
    02:04.1 FireWire (IEEE 1394): Texas Instruments PCI4510 IEEE-1394 Controller
    03:00.0 Ethernet controller: Atheros Communications Inc. AR5212/AR5213 Multiprotocol MAC/baseband processor (rev 01)
    From ifconfig-a

    ath0 Link encap:Ethernet HWaddr 00:13:46:13:70:41
    inet addr:192.168.1.101 Bcast:192.168.1.255 Mask:255.255.255.0
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    RX packets:27 errors:0 dropped:0 overruns:0 frame:0
    TX packets:96 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:4386 (4.2 KB) TX bytes:8491 (8.2 KB)

    eth0 Link encap:Ethernet HWaddr 00:11:43:7b:6a:6c
    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:17

    lo Link encap:Local Loopback
    inet addr:127.0.0.1 Mask:255.0.0.0
    UP LOOPBACK RUNNING MTU:16436 Metric:1
    RX packets:324 errors:0 dropped:0 overruns:0 frame:0
    TX packets:324 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:16200 (15.8 KB) TX bytes:16200 (15.8 KB)

    wifi0 Link encap:UNSPEC HWaddr 00-13-46-13-70-41-00-00-00-00-00-00-00-00-00-00
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    RX packets:11507 errors:0 dropped:0 overruns:0 frame:5497
    TX packets:361 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:199
    RX bytes:1029684 (1005.5 KB) TX bytes:23013 (22.4 KB)
    Interrupt:16
    and finally the info from /etc/network/interfaces

    auto lo
    iface lo inet loopback

    I should also mention that I am running NO firewall on the linux install at this time.
    I apologize if I've "over-info'ed" or "under-info'ed" this post but I really am quite new to this. I am hopeful that someone can lead me in the right direction because I really don't know what I could have done to break this. It was working fine last night and the only thing I have been messing with is the fonts on the system.
    Last edited by wlbai; May 3rd, 2008 at 04:43 PM.

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