Wireless not Working - Intel Centrino Advanced-N WiMax AGN 6250

[jseabold]

This is a crosspost of a thread in the hardware and laptop forum.

Haven't been able to get my wireless card working in Ubuntu 10.04.

$ uname -r
2.6.32-23-generic

It's an Intel Centrino AGN 6250.

I've installed the Intel 6050 microcode from here
http://intellinuxwireless.org/?n=Downloads
and rebooted

$ rfkill list
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: yes
$ rfkill unblock all
$ rfkill list
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: yes

$ sudo ifconfig wlan0 up
SIOCSIFFLAGS: Unknown error 132

Seems odd. Any other info I can provide? Any help would be appreciated.

PS.

Wondering if all of these should be there?

$ ls -la /lib/firmware/ | grep ucode
-rw-r--r-- 1 root root 335056 2010-05-26 12:10 iwlwifi-1000-3.ucode
-rw-r--r-- 1 root root 150100 2010-05-26 12:10 iwlwifi-3945-2.ucode
-rw-r--r-- 1 root root 187972 2010-05-26 12:10 iwlwifi-4965-2.ucode
-rw-r--r-- 1 root root 345008 2010-05-26 12:10 iwlwifi-5000-1.ucode
-rw-r--r-- 1 root root 353240 2010-05-26 12:10 iwlwifi-5000-2.ucode
-rw-r--r-- 1 root root 337400 2010-05-26 12:10 iwlwifi-5150-2.ucode
-rw-r--r-- 1 root root 462280 2010-05-26 12:10 iwlwifi-6000-4.ucode
-rw-r--r-- 1 root root 463692 2010-07-11 22:35 iwlwifi-6050-4.ucode

[iponeverything]

No idea where this stands, poke the lp bug with a question asking if someone has it working.

https://bugs.launchpad.net/ubuntu/+s...ls/+bug/537814

edit:

Just found another lp for it:

https://bugs.launchpad.net/ubuntu/+s...re/+bug/532451

From this report, try installing backports:

sudo apt-get install linux-backports-modules-wireless-lucid-generic

[jseabold]

Thanks for finding the bug report. I neglected to mention that I had installed the backports already.

When I click on the NetworkManager applet under wireless it says wireless is disabled and it's greyed out.

It's that hard block that I find to be odd. Like my wireless is toggled off and won't turn back on, but it looked like the wireless toggle key is working.

[jseabold]

As an update, I have reinstalled Ubuntu 10.04 to start from scratch and installed the wireless modules backports.

I have done

sudo modprob iwlang

$ iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.

wlan0     IEEE 802.11abgn  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=off   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off

$ ifconfig wlan0 up
SIOCSIFFLAGS: Permission denied
$ sudo ifconfig wlan0 up
SIOCSIFFLAGS: Unknown error 132

I also noticed that it's not the wireless switch providing the hard block

$ rfkill list
0: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: yes

Toggle wireless key.

$ rfkill list
0: phy0: Wireless LAN
	Soft blocked: yes
	Hard blocked: yes

Anyone have any thoughts on the workaround in the last reply to this post

[jseabold]

Solved the problem. I have a dual boot system. I logged into Windows 7. Toggled wireless off then back on. Reboot into Ubuntu and all is good.

[iponeverything]

Solved the problem. I have a dual boot system. I logged into Windows 7. Toggled wireless off then back on. Reboot into Ubuntu and all is good.

Maybe the card got a bad firmware load..

Interesting. I wonder if it could have been done without the dual boot option by removing all power and letting the system sit for while. What is your hardware?

[fitzjj]

From this report, try installing backports:

sudo apt-get install linux-backports-modules-wireless-lucid-generic

Thanks iponeverything, I've been searching for a solution to this for a while and that one line solved everything. For reference that was on a Lenovo Thinkpad with an Intel wireless card:

description: Wireless interface
product: PRO/Wireless 3945ABG [Golan] Network Connection
vendor: Intel Corporation

[syats]

Another solution is to use rfkill

1. rmod your wifi module
2. rfkill block all
3. rfkill unblock all
4. modprobe your wifi module
5. rfkill unblock all

in my case

rmmod ath5k
rfkill block all
rfkill unblock all
modprobe ath5k
rfkill unblock all

did it (works also on debian)