Member Avatar for java_programmer

I have two OS in my Dell vostro laptop - Windows XP and Ubuntu 10.04.
In XP, the wireless is working fine, but in Ubuntu, it is not working. I have checked the wirless driver from System -> Hardware Drivers, it is installed and is in active state. The wired network is working fine. When I tried to connect to the wireless, it says, Connected. Even the wireless shows that the wireless is connected. But I can't load any page. Whenever I tried to browse, it says, Page can't be displayed, check your network connection. I have tried various method found in google, but no result.
Any suggession is appreciated.
I have just migrated from Windows so can't figure out the problem.

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  • Latest Post Latest Post by jbennet

Dani AI

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The symptom described by — wireless shows “Connected” in Ubuntu 10.04 but no pages load while the same hardware works in Windows — points to three broad causes: driver/firmware mismatch, a routing/DNS problem, or a kernel/module conflict. Ignore the “kudzu” suggestion from and ; as noted, kudzu is a Red Hat tool and not relevant on Ubuntu. was right to ask for kernel messages and chipset info — those are the key diagnostics.

Useful checks (run from a terminal; interface names may vary):

sudo lshw -C network
dmesg | egrep -i 'firmware|wlan|b43|wl|brcm|error'
rfkill list all
ip addr show
ip route show
cat /etc/resolv.conf
ping -c 3 8.8.8.8
ping -c 3 google.com

How to read the results:

  • If dmesg shows “failed to load firmware” or the device is UNCLAIMED in lshw, it’s a firmware/driver problem. Many Dell notebooks use Broadcom chips that need either the proprietary STA/wl module or the open b43/brcm driver plus firmware; the correct choice depends on the exact chipset string.
  • If you have an IP and can ping the gateway or 8.8.8.8 but cannot resolve names, the problem is DNS (check /etc/resolv.conf or NetworkManager DNS settings).
  • If the interface is associated but you can’t reach the gateway, look for module conflicts (lsmod) or for the radio being soft/ hard blocked (rfkill).

Practical notes: installing or switching drivers typically requires a temporary wired connection. For a fast test, booting a current Ubuntu live USB often shows whether newer kernels/firmware fix the issue without changing the installed system. Since 10.04 is long out of support, consider using a supported release to avoid repeated driver/firmware headaches.

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All 4 Replies

Member Avatar for seo.guru

your wireless is not working. kindly make sure that kudzo service is running in ur Ubuntu? this service use to detech new hardware so on ur wireless and then run this servise.

Member Avatar for beth22

In order to get to reason why ur wireless does not work.

Please get output of dmesg with dmesg, because sometimes you miss wireless firmware.

Also, check for ur wireless chipset, so we know it can work in Ubuntu? You can use lspci.
e.g Ubuntu system with Broadcom

$lspci | grep -i broadcom
$02:00.0 Network controller: Broadcom Corporation BCM4312 802.11b/g LP-PHY (rev 01)

$lspci -v -s 02:00.0
$02:00.0 Network controller: Broadcom Corporation BCM4312 802.11b/g LP-PHY (rev 01)
Subsystem: Hewlett-Packard Company BCM4312 802.11b/g Wireless LAN Controller
Flags: bus master, fast devsel, latency 0, IRQ 18
Memory at 58500000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: wl
Kernel modules: wl, ssb

You can take a look at these:

https://help.ubuntu.com/community/WifiDocs/Driver/bcm43xx
https://help.ubuntu.com/community/WifiDocs/Driver/bcm43xx

Hope this help.

Edited by Reverend Jim because: Fixed formatting
Member Avatar for david2929

kindly make sure that kudzo service is running in ur Ubuntu? this service use to detech new hardware so on ur wireless and then run this servise. go to linuswireless

Member Avatar for jbennet

kindly make sure that kudzo service is running in ur Ubuntu? this service use to detech new hardware so on ur wireless and then run this servise. go to linuswireless

There is no kudzu in ubuntu. Kudzu is a redhat thing.

Please run the lspci command so we can see what model your wireless NIC is.

Edited by jbennet because: n/a
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