Code:
root@kali:~# iwconfig
wlan0     unassociated  Nickname:"<WIFI@REALTEK>"
          Mode:Managed  Frequency=2.412 GHz  Access Point: Not-Associated
          Sensitivity:0/0
          Retry:off   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality:0  Signal level:0  Noise level:0
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

lo        no wireless extensions.

eth0      no wireless extensions.

root@kali:~# airmon-ng

PHY     Interface       Driver          Chipset

null    wlan0           ??????          Realtek Semiconductor Corp. RTL8192CU 802.11n WLAN Adapter

root@kali:~# airodump-ng --encrypt wpa mon0
Interface mon0:
ioctl(SIOCGIFINDEX) failed: No such device
root@kali:~# dmesg | tail
[  160.645094] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
[  160.653199] cfg80211:   (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
[  160.662806] cfg80211:   (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
[  160.672373] cfg80211:   (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
[  160.680517] cfg80211:   (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
[  160.688571] cfg80211:   (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
[  160.696758] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[  161.354899] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[  161.505181] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[  214.738397] rtw_cmd_thread: DriverStopped(0) SurpriseRemoved(1) break at line 482
root@kali:~# lsusb
Bus 001 Device 004: ID 0bda:8178 Realtek Semiconductor Corp. RTL8192CU 802.11n WLAN Adapter
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp. SMC9514 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
root@kali:~# ^C
root@kali:~# airmon-ng check kill

Killing these processes:

  PID Name
  333 dhclient
  536 wpa_supplicant
Can you help me? thanks