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I'm using Ubuntu 16.04 with LXDE Desktop.

I'm trying to connect wifi hotspot via NetworkManager.service.

But there is a possibility that will fail to connect hotspot by using the GUI interface.

Although I access the correct password, It still keeps telling me to reaccess the password.

However, If the wifi hotspot has no password then this circumstance will not appear.

Below is the kernel log while this phenomenon comes up.

[  141.413203] dhd_prot_ioctl: status ret value is -17

[  141.417889] Connecting with 72:81:eb:76:6e:d2 ssid "Victoryo", len (8) channel=11

[  141.495198] wl_bss_connect_done succeeded with 72:81:eb:76:6e:d2

[  141.508001] wl_bss_connect_done succeeded with 72:81:eb:76:6e:d2

[  141.515953] cfg80211: Regulatory domain changed to country: TW

[  141.515963] cfg80211:  DFS Master region: JP

[  141.515969] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)

[  141.515981] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 3000 mBm), (N/A)

[  141.515989] cfg80211:   (5270000 KHz - 5330000 KHz @ 40000 KHz), (N/A, 1700 mBm), (0 s)

[  141.515997] cfg80211:   (5490000 KHz - 5590000 KHz @ 80000 KHz), (N/A, 3000 mBm), (0 s)

[  141.516004] cfg80211:   (5650000 KHz - 5710000 KHz @ 40000 KHz), (N/A, 3000 mBm), (0 s)

[  141.516010] cfg80211:   (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 3000 mBm), (N/A)

[  141.522529] dhd_prot_flow_ring_create: Send Flow Create Req flow ID 41 for peer 72:81:eb:76:6e:d2 prio 0 ifindex 0

[  141.522619] dhd_prot_flow_ring_create_response_process: Flow Create Response status = 0 Flow 41

[  141.603345] dhd_prot_flow_ring_create: Send Flow Create Req flow ID 40 for peer 33:33:00:00:00:16 prio 3 ifindex 0

[  141.603450] dhd_prot_flow_ring_create_response_process: Flow Create Response status = 0 Flow 40

[  187.060972] CFG80211-ERROR) wl_cfg80211_disconnect : Reason 3

[  187.063675] dhd_prot_flow_ring_delete: Send Flow Delete Req RING ID 40 for peer 33:33:00:00:00:16 prio 3 ifindex 0

[  187.063693] dhd_prot_flow_ring_delete: Send Flow Delete Req RING ID 41 for peer 72:81:eb:76:6e:d2 prio 0 ifindex 0

[  187.063747] dhd_bus_flow_ring_delete_request :Delete Pending Flow 40

[  187.063753] dhd_bus_flow_ring_delete_request :Delete Pending Flow 41

[  187.063804] dhd_prot_flow_ring_delete_response_process: Flow Delete Response status = 0 Flow 40

[  187.063816] dhd_prot_flow_ring_delete_response_process: Flow Delete Response status = 0 Flow 41

[  187.063871] CFG80211-ERROR) wl_is_linkdown : Link down Reason : WLC_E_LINK

[  187.063905] link down if wlan0 may call cfg80211_disconnected. event : 16, reason=2 from 72:81:eb:76:6e:d2

How can I solve this issue?