Question

4

Wifi for Centrino Wireless-N 1000 Intel Corporation (HP Pavilion dm4 - 2070us) is not working

rated 0 times [ 4] [ 0] / answers: 1 / hits: 7256 / 2 Years ago, fri, january 7, 2022, 8:52:52

I have a HP Pavilion dm4-2070us which has an Intel Corporation Centrino Wireless-N 1000 adapter.

The problem is that my computer doesn't show the wireless networks after I upgraded my system to Ubuntu 11.10. Following is my output for sudo lshw -class network:

*-network DISABLED      

   description: Wireless interface

   product: Centrino Wireless-N 1000

   vendor: Intel Corporation

   physical id: 0

   bus info: pci@0000:01:00.0

   logical name: wlan0

   version: 00

   serial: 8c:a9:82:81:5a:30

   width: 64 bits

   clock: 33MHz

   capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless

   configuration: broadcast=yes driver=iwlagn driverversion=3.0.0-12-generic firmware=39.31.5.1 build 35138 latency=0 link=no multicast=yes wireless=IEEE 802.11bgn

   resources: irq:42 memory:c2500000-c2501fff



*-network

   description: Ethernet interface

   product: AR8151 v2.0 Gigabit Ethernet

   vendor: Atheros Communications

   physical id: 0

   bus info: pci@0000:08:00.0

   logical name: eth0

   version: c0

   serial: 2c:41:38:07:f3:e3

   size: 100Mbit/s

   capacity: 1Gbit/s

   width: 64 bits

   clock: 33MHz

   capabilities: pm msi pciexpress vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation

   configuration: autonegotiation=on broadcast=yes driver=atl1c driverversion=1.0.1.0-NAPI duplex=full firmware=N/A ip=192.168.1.7 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s

   resources: irq:44 memory:c1400000-c143ffff ioport:2000(size=128)

The output for rfkill list all:

0: hp-wifi: Wireless LAN

    Soft blocked: no

    Hard blocked: no

1: hp-bluetooth: Bluetooth

    Soft blocked: no

    Hard blocked: no

2: phy0: Wireless LAN

    Soft blocked: no

    Hard blocked: no

3: hp-wwan: Wireless WAN

    Soft blocked: no

    Hard blocked: no

I have also searched about the status of the WiFi network being shown as disabled. Somehow everything pointed to the fact that my wireless device is switched off and it can be switched on from Windows only. However, I don't have windows partition and it has just Ubuntu 11.10 so I don't see any point in switching the device on in Windows.

Answers

Only authorized users can answer the question. Please sign in first, or register a free account.

elecerna

Add To Favorites

Follow

Total Points: 140

Total Questions: 121

Total Answers: 107

Location: Northern Ireland

Member since Sun, Nov 21, 2021

2 Years ago

answered 2 Years ago oargrou · Accepted Answer

After trying out different distributions and struggling with my wireless card I finally stumbled upon a link that gives a work around to the problem. Apparently the new kernel fails to detect the Centrino 1000 N wireless card in some laptops(hp dm4) while there are other laptops on which it works completely fine like Lenovo Y560P.

The following link gives the solution!! Even though I am not sure whether this work around will have any greater impacts later or not, but for now its working fine.

http://community.linuxmint.com/tutorial/view/608

"To (temporarily) get the wireless working on newer kernels:

sudo mv /lib/firmware/iwlwifi-1000-5.ucode /lib/firmware/iwlwifi-1000-5.ucode.backup

sudo modprobe -r iwlagn

sudo modprobe iwlagn

This should make the wireless use the old 1000-3.ucode which works at the moment."