wireless - Changing adapter back to manged mode

I changed my adapter to monitor mode using:

sudo ifconfig wlan0 down
sudo iwconfig wlan0 mode monitor 

Now, I cannot change it back (in the GUI, when I click on connections, it says that "wireless is disabled by wireless switch"). I have not switched off anything from hardware buttons.

I tried

sudo ifconfig wlan0 down
sudo iwconfig wlan0 mode managed 
sudo service network-manager restart

I also tried

pccardctl eject
pccardctl insert

It appears that it has switched back to managed mode, but is still offline:
ifconfig output:

 eth0      Link encap:Ethernet  HWaddr 00:24:21:6f:84:69  
           inet addr:10.100.1.41  Bcast:10.100.255.255  Mask:255.255.0.0
           inet6 addr: fe80::224:21ff:fe6f:8469/64 Scope:Link
           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
           RX packets:27668 errors:0 dropped:0 overruns:0 frame:0

           TX packets:3504 errors:0 dropped:0 overruns:0 carrier:0
           collisions:1 txqueuelen:1000 
           RX bytes:4493143 (4.4 MB)  TX bytes:659945 (659.9 KB)

 lo        Link encap:Local Loopback  
           inet addr:127.0.0.1  Mask:255.0.0.0
           inet6 addr: ::1/128 Scope:Host
           UP LOOPBACK RUNNING  MTU:65536  Metric:1
           RX packets:553 errors:0 dropped:0 overruns:0 frame:0
           TX packets:553 errors:0 dropped:0 overruns:0 carrier:0

           collisions:0 txqueuelen:0 
           RX bytes:84110 (84.1 KB)  TX bytes:84110 (84.1 KB)

iwconfig output:

 eth0      no wireless extensions.

 lo        no wireless extensions.


 wlan0     IEEE 802.11bg  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