wifi is suddenly diabled

[arielsegal]

Hi,
I am using an Acer One netbook that runs ubuntu netbook remix. After I played around with an application that put the wifi in monitor mode, I reboot and the system could not put the wifi back to use.
I gathered some info, I hope you can help.

$ sudo -i
[sudo] password for ariel: 
# iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.

wlan0     IEEE 802.11bg  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=0 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          

# ifconfig wlan0
wlan0     Link encap:Ethernet  HWaddr 00:23:4e:34:bf:bd  
          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)

[techieMoe]

Does your netbook have a hardware wifi switch? Is it on?

[arielsegal]

Thanks for your answer.
The wifi switch is on. I can use the wifi if I boot the system from a live ubuntu bootable USB. but if I boot from HD the wifi is disabled.

[techieMoe]

Thanks for your answer.
The wifi switch is on. I can use the wifi if I boot the system from a live ubuntu bootable USB. but if I boot from HD the wifi is disabled.

Does the wifi stay off if you toggle the switch? I had an odd issue once where my wifi stayed off regardless of the position of the switch, and if I flipped it (whether it was to ON or OFF) it came back on.

Also, could you post the result of this command?

rfkill list