View Full Version : [ubuntu] Wireless suddenly not working

March 13th, 2011, 03:49 PM

I had issues with getting my wireless to work when I first bought my msi 620, clean installed Ubuntu for the first time, and this was sorted out here: http://ubuntuforums.org/showthread.php?t=1650507

It's broken again and I can't figure out how to get it going, even though I followed the previous fixed thread's instructions.

Not sure if it has any relevance but I did two things differently to normal when it broke:
1) I was in a different country (just got home today)
2) I plugged in a cable to connect my laptop to my brother's TV, and since then my wireless card has been turned off and I'm unable to turn it back on.

When I run 'sudo lshw -C network' it tells me that the network is disabled, when I hit 'rfkill list' it tells me that wireless lan is hard blocked.



March 13th, 2011, 04:04 PM
Check your firewall if you have one loaded that may have turn off your wireless connection

March 13th, 2011, 04:18 PM
What if you run:

sudo rfkill unblock wifi

sudo rfkill list all

March 13th, 2011, 04:40 PM
Found another thread, that reports that if you are using a kernel before 2.6.34 this problem occurs. It is reported that manually updating your kernel to 2.6.34 will cure the drops with all wireless cards. I'm not willing to verify this at this time because my ISP has oversold their DSL capablities and my connection sucks at this time. I guess I'm fortunate that I have a WET-11 to use in the interim.

Instructions for manually updating your kernel can be found @
https://wiki.ubuntu.com/KernelTeam/GitKernelBuild (http://ubuntuforums.org/view-source:https://wiki.ubuntu.com/KernelTeam/GitKernelBuild)

You can determine your current kernel with uname -a

Edit: I need to update this.....it may not solve this particualr problem or have anything to do with it. I was reading different things on my problem, which was similar. I had left this tab open and posted the info I found, but since this isn't quite the same, it may or may not help.

March 13th, 2011, 07:18 PM

Thanks for suggestions so far

Dunp...no firewall.

Wojox... ran those, no change, still hardblocked.

Shriner.... that looks complicated, will do that when I'm less tired so I don't balls it up.

Thanks again....

March 13th, 2011, 07:46 PM
Another thing I had found is that sometimes the wireless card is put into a sleep mode by the power saving feature. You can check this with "iwconfig"

If power saving is on you turn it off with "sudo iwconfig wlan0 power off" - assuming that you are using wlan0.

Maybe this will help.......

March 17th, 2011, 03:28 PM
No power management issues. I'm losing hair with this one...would consider ditching for apple if it wasn't so expensive...

March 17th, 2011, 03:30 PM
Oh, and my kernel is 2.6.35...