Connection problem if I enable "Cloned MAC Address" on my Wifi

My wlan0 "Device MAC address" is: OO:OO:OO:OO:OO:OO, in "Edit Connection" window "Cloned MAC address" was empty. I entered a new MAC address in this field: XX:XX:XX:XX:XX:XX. and saved it. After that I am not able to connect o myssid! I checked in my modem setting (using LAN cable). The MAC filtering is disabled in my modem.

This is output of sudo tail -f /var/log/syslog after trying to connect to myssid (with cloned MAC address).

Feb  1 23:30:05 my-laptop NetworkManager[3800]: <info> Activation (wlan0) starting connection 'myssid'
Feb  1 23:30:05 my-laptop NetworkManager[3800]: <info> (wlan0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Feb  1 23:30:05 my-laptop NetworkManager[3800]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) scheduled...
Feb  1 23:30:05 my-laptop NetworkManager[3800]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) started...
Feb  1 23:30:05 my-laptop NetworkManager[3800]: <info> (wlan0): taking down device.
Feb  1 23:30:05 my-laptop NetworkManager[3800]: <info> (wlan0): set MAC address to XX:XX:XX:XX:XX:XX
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) scheduled...
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) complete.
Feb  1 23:30:06 my-laptop kernel: [262160.604817] brcmsmac bcma0:0: brcms_ops_bss_info_changed: qos enabled: false (implement)
Feb  1 23:30:06 my-laptop kernel: [262160.604834] brcmsmac bcma0:0: brcms_ops_config: change power-save mode: false (implement)
Feb  1 23:30:06 my-laptop kernel: [262160.605022] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> (wlan0): supplicant interface state: inactive -> disabled
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) starting...
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> (wlan0): device state change: prepare -> config (reason 'none') [40 50 0]
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> Activation (wlan0/wireless): access point 'myssid' has security, but secrets are required.
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> (wlan0): device state change: config -> need-auth (reason 'none') [50 60 0]
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) complete.
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> (wlan0): supplicant interface state: disabled -> inactive
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) scheduled...
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) started...
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> (wlan0): device state change: need-auth -> prepare (reason 'none') [60 40 0]
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) scheduled...
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) complete.
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) starting...
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> (wlan0): device state change: prepare -> config (reason 'none') [40 50 0]
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> Activation (wlan0/wireless): connection 'myssid' has security, and secrets exist.  No new secrets needed.
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> Config: added 'ssid' value 'myssid'
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> Config: added 'scan_ssid' value '1'
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> Config: added 'key_mgmt' value 'WPA-PSK'
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> Config: added 'psk' value '<omitted>'
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) complete.
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> Config: set interface ap_scan to 1
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> (wlan0): supplicant interface state: inactive -> scanning
Feb  1 23:30:06 my-laptop wpa_supplicant[1383]: message repeated 3 times: [ wlan0: CTRL-EVENT-SCAN-STARTED ]
Feb  1 23:30:06 my-laptop wpa_supplicant[1383]: wlan0: SME: Trying to authenticate with mm:mm:mm:mm:mm:mm (SSID='myssid' freq=2412 MHz)
Feb  1 23:30:06 my-laptop kernel: [262161.475402] wlan0: authenticate with mm:mm:mm:mm:mm:mm
Feb  1 23:30:06 my-laptop kernel: [262161.476572] wlan0: send auth to mm:mm:mm:mm:mm:mm (try 1/3)
Feb  1 23:30:06 my-laptop kernel: [262161.478407] wlan0: authenticated
Feb  1 23:30:06 my-laptop NetworkManager[3800]: <info> (wlan0): supplicant interface state: scanning -> authenticating
Feb  1 23:30:11 my-laptop kernel: [262166.474938] wlan0: deauthenticating from mm:mm:mm:mm:mm:mm by local choice (reason=3)
Feb  1 23:30:11 my-laptop wpa_supplicant[1383]: wlan0: CTRL-EVENT-SSID-TEMP-DISABLED id=0 ssid="myssid" auth_failures=1 duration=10
Feb  1 23:30:11 my-laptop NetworkManager[3800]: <info> (wlan0): supplicant interface state: authenticating -> disconnected
Feb  1 23:30:21 my-laptop wpa_supplicant[1383]: wlan0: CTRL-EVENT-SCAN-STARTED 
Feb  1 23:30:21 my-laptop NetworkManager[3800]: <info> (wlan0): supplicant interface state: disconnected -> scanning
Feb  1 23:30:22 my-laptop wpa_supplicant[1383]: wlan0: CTRL-EVENT-SSID-REENABLED id=0 ssid="myssid"
Feb  1 23:30:22 my-laptop wpa_supplicant[1383]: wlan0: SME: Trying to authenticate with mm:mm:mm:mm:mm:mm (SSID='myssid' freq=2412 MHz)
Feb  1 23:30:22 my-laptop kernel: [262177.257358] wlan0: authenticate with mm:mm:mm:mm:mm:mm
Feb  1 23:30:22 my-laptop kernel: [262177.259481] wlan0: send auth to mm:mm:mm:mm:mm:mm (try 1/3)
Feb  1 23:30:22 my-laptop NetworkManager[3800]: <info> (wlan0): supplicant interface state: scanning -> authenticating
Feb  1 23:30:22 my-laptop kernel: [262177.260940] wlan0: authenticated
Feb  1 23:30:27 my-laptop wpa_supplicant[1383]: wlan0: CTRL-EVENT-SSID-TEMP-DISABLED id=0 ssid="myssid" auth_failures=2 duration=20
Feb  1 23:30:27 my-laptop kernel: [262182.258511] wlan0: deauthenticating from mm:mm:mm:mm:mm:mm by local choice (reason=3)
Feb  1 23:30:27 my-laptop NetworkManager[3800]: <info> (wlan0): supplicant interface state: authenticating -> disconnected
Feb  1 23:30:31 my-laptop NetworkManager[3800]: <warn> Activation (wlan0/wireless): association took too long, failing activation.
Feb  1 23:30:31 my-laptop NetworkManager[3800]: <info> (wlan0): device state change: config -> failed (reason 'SSID not found') [50 120 53]
Feb  1 23:30:31 my-laptop NetworkManager[3800]: <warn> Activation (wlan0) failed for connection 'myssid'
Feb  1 23:30:31 my-laptop NetworkManager[3800]: <info> (wlan0): device state change: failed -> disconnected (reason 'none') [120 30 0]
Feb  1 23:30:31 my-laptop NetworkManager[3800]: <info> (wlan0): deactivating device (reason 'none') [0]
Feb  1 23:30:31 my-laptop NetworkManager[3800]: <info> (wlan0): taking down device.
Feb  1 23:30:31 my-laptop NetworkManager[3800]: <info> (wlan0): reset MAC address to OO:OO:OO:OO:OO:OO
Feb  1 23:30:31 my-laptop kernel: [262186.002396] brcmsmac bcma0:0: brcms_ops_bss_info_changed: qos enabled: false (implement)
Feb  1 23:30:31 my-laptop kernel: [262186.002412] brcmsmac bcma0:0: brcms_ops_config: change power-save mode: false (implement)
Feb  1 23:30:31 my-laptop kernel: [262186.002596] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
Feb  1 23:30:31 my-laptop NetworkManager[3800]: <info> (wlan0): supplicant interface state: disconnected -> disabled
Feb  1 23:30:31 my-laptop wpa_supplicant[1383]: wlan0: CTRL-EVENT-SCAN-STARTED 
Feb  1 23:30:31 my-laptop NetworkManager[3800]: <info> (wlan0): supplicant interface state: disabled -> inactive

If I set cloned MAC address empty or equal to device MAC address, I could connect to myssid without any problem.

If you wish to change mac address the simplest wey is to use command

sudo ifconfig wlan0 down
sudo ifconfig wlan0 hw ether  xx:xx:xx:xx:xx:xx
sudo ifconfig wlan0 up

xx:xx:xx:xx:xx:xx - represent "new" mac address