I have the problem despite I tried to forget the network and tried connecting again.

snadar@ThinkPad-T480:~$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 18.04.3 LTS
Release:	18.04
Codename:	bionic

snadar@ThinkPad-T480:~$ cat /var/log/syslog
Oct 24 11:18:04 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: CTRL-EVENT-SCAN-STARTED
Oct 24 11:18:07 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908687.5057] audit: op="connection-delete" uuid="36692638-6bb6-4bc7-8425-849f3cb9ff70" name="apname" pid=5766 uid=1000 result="success"
Oct 24 11:18:16 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: CTRL-EVENT-SCAN-STARTED
Oct 24 11:19:04 ThinkPad-T480 wpa_supplicant[1205]: message repeated 3 times: [ wlp3s0: CTRL-EVENT-SCAN-STARTED]
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.3918] keyfile: add connection in-memory (660e7552-b847-4063-803c-6de6da411f0b,"apname")
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.3936] device (wlp3s0): disconnecting for new activation request.
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.3936] device (wlp3s0): state change: activated -> deactivating (reason 'new-activation', sys-iface-state: 'managed')
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4074] settings-connection[0x55affb554360,660e7552-b847-4063-803c-6de6da411f0b]: write: successfully commited (keyfile: update /etc/NetworkManager/system-connections/apname (660e7552-b847-4063-803c-6de6da411f0b,"apname") and persist connection)
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4075] audit: op="connection-add-activate" uuid="660e7552-b847-4063-803c-6de6da411f0b" name="apname" pid=5766 uid=1000 result="success"
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4169] device (wlp3s0): state change: deactivating -> disconnected (reason 'new-activation', sys-iface-state: 'managed')
Oct 24 11:19:09 ThinkPad-T480 avahi-daemon[1120]: Withdrawing address record for fe80::5eb2:7428:835c:e20e on wlp3s0.
Oct 24 11:19:09 ThinkPad-T480 avahi-daemon[1120]: Leaving mDNS multicast group on interface wlp3s0.IPv6 with address fe80::5eb2:7428:835c:e20e.
Oct 24 11:19:09 ThinkPad-T480 avahi-daemon[1120]: Interface wlp3s0.IPv6 no longer relevant for mDNS.
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4505] dhcp4 (wlp3s0): canceled DHCP transaction, DHCP client pid 8389
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4505] dhcp4 (wlp3s0): state changed bound -> done
Oct 24 11:19:09 ThinkPad-T480 kernel: [ 3539.473650] wlp3s0: deauthenticating from a0:04:60:7c:6f:31 by local choice (Reason: 3=DEAUTH_LEAVING)
Oct 24 11:19:09 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: CTRL-EVENT-DISCONNECTED bssid=a0:04:60:7c:6f:31 reason=3 locally_generated=1
Oct 24 11:19:09 ThinkPad-T480 avahi-daemon[1120]: Withdrawing address record for 192.168.44.148 on wlp3s0.
Oct 24 11:19:09 ThinkPad-T480 avahi-daemon[1120]: Leaving mDNS multicast group on interface wlp3s0.IPv4 with address 192.168.44.148.
Oct 24 11:19:09 ThinkPad-T480 avahi-daemon[1120]: Interface wlp3s0.IPv4 no longer relevant for mDNS.
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4654] device (wlp3s0): Activation: starting connection 'apname' (660e7552-b847-4063-803c-6de6da411f0b)
Oct 24 11:19:09 ThinkPad-T480 dbus-daemon[1139]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service' requested by ':1.11' (uid=0 pid=1173 comm="/usr/sbin/NetworkManager --no-daemon " label="unconfined")
Oct 24 11:19:09 ThinkPad-T480 systemd[1]: Starting Network Manager Script Dispatcher Service...
Oct 24 11:19:09 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: CTRL-EVENT-SCAN-STARTED
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <warn>  [1571908749.4701] sup-iface[0x55affb6bc0d0,wlp3s0]: connection disconnected (reason -3)
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4702] device (wlp3s0): supplicant interface state: completed -> disconnected
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <warn>  [1571908749.4705] sup-iface[0x55affb6bc0d0,wlp3s0]: connection disconnected (reason -3)
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4720] device (wlp3s0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4728] device (wlp3s0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4730] device (wlp3s0): Activation: (wifi) access point 'apname' has security, but secrets are required.
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4730] device (wlp3s0): state change: config -> need-auth (reason 'none', sys-iface-state: 'managed')
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4732] sup-iface[0x55affb6bc0d0,wlp3s0]: wps: type pbc start...
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4824] device (wlp3s0): state change: need-auth -> prepare (reason 'none', sys-iface-state: 'managed')
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4829] device (wlp3s0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4832] device (wlp3s0): Activation: (wifi) connection 'apname' has security, and secrets exist.  No new secrets needed.
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4832] Config: added 'ssid' value 'apname'
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4832] Config: added 'scan_ssid' value '1'
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4833] Config: added 'bgscan' value 'simple:30:-65:300'
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4833] Config: added 'key_mgmt' value 'WPA-EAP'
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4833] Config: added 'auth_alg' value 'OPEN'
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4833] Config: added 'password' value '<hidden>'
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4833] Config: added 'eap' value 'PEAP'
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4833] Config: added 'fragment_size' value '1266'
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4834] Config: added 'phase2' value 'auth=MSCHAPV2'
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4834] Config: added 'identity' value 'nadar'
Oct 24 11:19:09 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908749.4834] Config: added 'proactive_key_caching' value '1'
Oct 24 11:19:09 ThinkPad-T480 dbus-daemon[1139]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
Oct 24 11:19:09 ThinkPad-T480 systemd[1]: Started Network Manager Script Dispatcher Service.
Oct 24 11:19:09 ThinkPad-T480 nm-dispatcher: req:1 'down' [wlp3s0]: new request (1 scripts)
Oct 24 11:19:09 ThinkPad-T480 nm-dispatcher: req:1 'down' [wlp3s0]: start running ordered scripts...
Oct 24 11:19:10 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: SME: Trying to authenticate with 94:10:3e:b9:a7:28 (SSID='apname' freq=5200 MHz)
Oct 24 11:19:10 ThinkPad-T480 kernel: [ 3540.630820] wlp3s0: authenticate with 94:10:3e:b9:a7:28
Oct 24 11:19:10 ThinkPad-T480 kernel: [ 3540.639386] wlp3s0: send auth to 94:10:3e:b9:a7:28 (try 1/3)
Oct 24 11:19:10 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908750.6204] device (wlp3s0): supplicant interface state: disconnected -> authenticating
Oct 24 11:19:10 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: Trying to associate with 94:10:3e:b9:a7:28 (SSID='apname' freq=5200 MHz)
Oct 24 11:19:10 ThinkPad-T480 kernel: [ 3540.646048] wlp3s0: authenticated
Oct 24 11:19:10 ThinkPad-T480 kernel: [ 3540.646688] wlp3s0: associate with 94:10:3e:b9:a7:28 (try 1/3)
Oct 24 11:19:10 ThinkPad-T480 kernel: [ 3540.647667] wlp3s0: RX AssocResp from 94:10:3e:b9:a7:28 (capab=0x11 status=0 aid=3)
Oct 24 11:19:10 ThinkPad-T480 kernel: [ 3540.649729] wlp3s0: associated
Oct 24 11:19:10 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: Associated with 94:10:3e:b9:a7:28
Oct 24 11:19:10 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908750.6297] device (wlp3s0): supplicant interface state: authenticating -> associated
Oct 24 11:19:10 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: CTRL-EVENT-EAP-STARTED EAP authentication started
Oct 24 11:19:10 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: CTRL-EVENT-EAP-PROPOSED-METHOD vendor=0 method=25
Oct 24 11:19:10 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: CTRL-EVENT-EAP-METHOD EAP vendor 0 method 25 (PEAP) selected
Oct 24 11:19:10 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: CTRL-EVENT-EAP-PEER-CERT depth=0 subject='/CN=tsads01.apname.local'
Oct 24 11:19:10 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: CTRL-EVENT-EAP-PEER-CERT depth=0 subject='/CN=tsads01.apname.local'
Oct 24 11:19:34 ThinkPad-T480 NetworkManager[1173]: <warn>  [1571908774.8136] device (wlp3s0): Activation: (wifi) association took too long
Oct 24 11:19:34 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908774.8137] device (wlp3s0): state change: config -> need-auth (reason 'none', sys-iface-state: 'managed')
Oct 24 11:19:34 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908774.8141] sup-iface[0x55affb6bc0d0,wlp3s0]: wps: type pbc start...
Oct 24 11:19:34 ThinkPad-T480 kernel: [ 3564.836366] wlp3s0: deauthenticating from 94:10:3e:b9:a7:28 by local choice (Reason: 3=DEAUTH_LEAVING)
Oct 24 11:19:34 ThinkPad-T480 NetworkManager[1173]: <warn>  [1571908774.8166] device (wlp3s0): Activation: (wifi) asking for new secrets
Oct 24 11:19:34 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: CTRL-EVENT-DISCONNECTED bssid=94:10:3e:b9:a7:28 reason=3 locally_generated=1
Oct 24 11:19:34 ThinkPad-T480 NetworkManager[1173]: <warn>  [1571908774.8254] sup-iface[0x55affb6bc0d0,wlp3s0]: connection disconnected (reason -3)
Oct 24 11:19:34 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908774.8258] device (wlp3s0): supplicant interface state: associated -> disconnected
Oct 24 11:19:34 ThinkPad-T480 NetworkManager[1173]: <warn>  [1571908774.8263] sup-iface[0x55affb6bc0d0,wlp3s0]: connection disconnected (reason -3)
Oct 24 11:19:34 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: CTRL-EVENT-SCAN-STARTED
Oct 24 11:19:34 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908774.8326] device (wlp3s0): supplicant interface state: disconnected -> scanning
Oct 24 11:19:34 ThinkPad-T480 gnome-shell[2600]: clutter_input_focus_set_cursor_location: assertion 'clutter_input_focus_is_focused (focus)' failed
Oct 24 11:19:35 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: CTRL-EVENT-SCAN-STARTED
Oct 24 11:19:38 ThinkPad-T480 wpa_supplicant[1205]: message repeated 2 times: [ wlp3s0: CTRL-EVENT-SCAN-STARTED]
Oct 24 11:19:40 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908780.7484] settings-connection[0x55affb554360,660e7552-b847-4063-803c-6de6da411f0b]: write: successfully commited (keyfile: update /etc/NetworkManager/system-connections/apname (660e7552-b847-4063-803c-6de6da411f0b,"apname"))
Oct 24 11:19:40 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908780.7488] device (wlp3s0): state change: need-auth -> prepare (reason 'none', sys-iface-state: 'managed')
Oct 24 11:19:40 ThinkPad-T480 NetworkManager[1173]: <warn>  [1571908780.7548] sup-iface[0x55affb6bc0d0,wlp3s0]: wps: cancel failed (GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: Error return with empty body: )
Oct 24 11:19:40 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908780.7550] device (wlp3s0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
Oct 24 11:19:40 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908780.7553] device (wlp3s0): Activation: (wifi) connection 'apname' has security, and secrets exist.  No new secrets needed.
Oct 24 11:19:40 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908780.7554] Config: added 'ssid' value 'apname'
Oct 24 11:19:40 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908780.7554] Config: added 'scan_ssid' value '1'
Oct 24 11:19:40 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908780.7554] Config: added 'bgscan' value 'simple:30:-65:300'
Oct 24 11:19:40 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908780.7554] Config: added 'key_mgmt' value 'WPA-EAP'
Oct 24 11:19:40 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908780.7555] Config: added 'auth_alg' value 'OPEN'
Oct 24 11:19:40 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908780.7555] Config: added 'password' value '<hidden>'
Oct 24 11:19:40 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908780.7555] Config: added 'eap' value 'PEAP'
Oct 24 11:19:40 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908780.7555] Config: added 'fragment_size' value '1266'
Oct 24 11:19:40 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908780.7555] Config: added 'phase2' value 'auth=MSCHAPV2'
Oct 24 11:19:40 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908780.7555] Config: added 'identity' value 'nadar'
Oct 24 11:19:40 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908780.7555] Config: added 'proactive_key_caching' value '1'
Oct 24 11:19:40 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: SME: Trying to authenticate with 94:10:3e:b9:a7:20 (SSID='apname' freq=2452 MHz)
Oct 24 11:19:40 ThinkPad-T480 kernel: [ 3570.988742] wlp3s0: authenticate with 94:10:3e:b9:a7:20
Oct 24 11:19:40 ThinkPad-T480 kernel: [ 3570.997823] wlp3s0: send auth to 94:10:3e:b9:a7:20 (try 1/3)
Oct 24 11:19:40 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: Trying to associate with 94:10:3e:b9:a7:20 (SSID='apname' freq=2452 MHz)
Oct 24 11:19:40 ThinkPad-T480 kernel: [ 3571.007380] wlp3s0: authenticated
Oct 24 11:19:40 ThinkPad-T480 kernel: [ 3571.010334] wlp3s0: associate with 94:10:3e:b9:a7:20 (try 1/3)
Oct 24 11:19:40 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908780.9880] device (wlp3s0): supplicant interface state: scanning -> authenticating
Oct 24 11:19:40 ThinkPad-T480 kernel: [ 3571.014229] wlp3s0: RX AssocResp from 94:10:3e:b9:a7:20 (capab=0x411 status=0 aid=1)
Oct 24 11:19:40 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: Associated with 94:10:3e:b9:a7:20
Oct 24 11:19:40 ThinkPad-T480 kernel: [ 3571.016742] wlp3s0: associated
Oct 24 11:19:41 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908781.0018] device (wlp3s0): supplicant interface state: authenticating -> associating
Oct 24 11:19:41 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908781.0039] device (wlp3s0): supplicant interface state: associating -> associated
Oct 24 11:19:41 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: CTRL-EVENT-EAP-STARTED EAP authentication started
Oct 24 11:19:41 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: CTRL-EVENT-EAP-PROPOSED-METHOD vendor=0 method=25
Oct 24 11:19:41 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: CTRL-EVENT-EAP-METHOD EAP vendor 0 method 25 (PEAP) selected
Oct 24 11:19:41 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: CTRL-EVENT-EAP-PEER-CERT depth=0 subject='/CN=tsads01.apname.local'
Oct 24 11:19:41 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: CTRL-EVENT-EAP-PEER-CERT depth=0 subject='/CN=tsads01.apname.local'
Oct 24 11:20:05 ThinkPad-T480 NetworkManager[1173]: <warn>  [1571908805.8145] device (wlp3s0): Activation: (wifi) association took too long
Oct 24 11:20:05 ThinkPad-T480 kernel: [ 3595.837138] wlp3s0: deauthenticating from 94:10:3e:b9:a7:20 by local choice (Reason: 3=DEAUTH_LEAVING)
Oct 24 11:20:05 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908805.8146] device (wlp3s0): state change: config -> need-auth (reason 'none', sys-iface-state: 'managed')
Oct 24 11:20:05 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908805.8150] sup-iface[0x55affb6bc0d0,wlp3s0]: wps: type pbc start...
Oct 24 11:20:05 ThinkPad-T480 NetworkManager[1173]: <warn>  [1571908805.8192] device (wlp3s0): Activation: (wifi) asking for new secrets
Oct 24 11:20:05 ThinkPad-T480 NetworkManager[1173]: <warn>  [1571908805.8228] device (wlp3s0): No agents were available for this request.
Oct 24 11:20:05 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: CTRL-EVENT-DISCONNECTED bssid=94:10:3e:b9:a7:20 reason=3 locally_generated=1
Oct 24 11:20:05 ThinkPad-T480 NetworkManager[1173]: <warn>  [1571908805.8285] sup-iface[0x55affb6bc0d0,wlp3s0]: connection disconnected (reason -3)
Oct 24 11:20:05 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908805.8296] device (wlp3s0): supplicant interface state: associated -> disconnected
Oct 24 11:20:05 ThinkPad-T480 NetworkManager[1173]: <warn>  [1571908805.8310] sup-iface[0x55affb6bc0d0,wlp3s0]: connection disconnected (reason -3)
Oct 24 11:20:05 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: CTRL-EVENT-SCAN-STARTED
Oct 24 11:20:05 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908805.8399] device (wlp3s0): supplicant interface state: disconnected -> scanning
Oct 24 11:20:06 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: CTRL-EVENT-SCAN-STARTED
Oct 24 11:20:35 ThinkPad-T480 wpa_supplicant[1205]: message repeated 17 times: [ wlp3s0: CTRL-EVENT-SCAN-STARTED]
Oct 24 11:20:35 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908835.8132] device (wlp3s0): state change: need-auth -> failed (reason 'no-secrets', sys-iface-state: 'managed')
Oct 24 11:20:35 ThinkPad-T480 NetworkManager[1173]: <warn>  [1571908835.8146] device (wlp3s0): Activation: failed for connection 'apname'
Oct 24 11:20:35 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908835.8273] device (wlp3s0): state change: failed -> disconnected (reason 'none', sys-iface-state: 'managed')
Oct 24 11:20:35 ThinkPad-T480 kernel: [ 3625.849438] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
Oct 24 11:20:35 ThinkPad-T480 gnome-shell[2600]: An active wireless connection, in infrastructure mode, involves no access point?
Oct 24 11:20:35 ThinkPad-T480 gnome-shell[1902]: An active wireless connection, in infrastructure mode, involves no access point?
Oct 24 11:20:35 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: Reject scan trigger since one is already pending
Oct 24 11:20:35 ThinkPad-T480 NetworkManager[1173]: <warn>  [1571908835.8465] sup-iface[0x55affb6bc0d0,wlp3s0]: wps: cancel failed (GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: Error return with empty body: )
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.3537] policy: auto-activating connection 'apname BYOD 5G'
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.3574] device (wlp3s0): Activation: starting connection 'apname BYOD 5G' (ae7a2c5f-8ceb-4727-bb1b-31fb84da46f2)
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.3583] device (wlp3s0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.3598] device (wlp3s0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.3606] device (wlp3s0): Activation: (wifi) access point 'apname BYOD 5G' has security, but secrets are required.
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.3607] device (wlp3s0): state change: config -> need-auth (reason 'none', sys-iface-state: 'managed')
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.3612] sup-iface[0x55affb6bc0d0,wlp3s0]: wps: type pbc start...
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.3705] device (wlp3s0): state change: need-auth -> prepare (reason 'none', sys-iface-state: 'managed')
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.3712] device (wlp3s0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.3716] device (wlp3s0): Activation: (wifi) connection 'apname BYOD 5G' has security, and secrets exist.  No new secrets needed.
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.3716] Config: added 'ssid' value 'apname BYOD 5G'
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.3717] Config: added 'scan_ssid' value '1'
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.3717] Config: added 'bgscan' value 'simple:30:-80:86400'
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.3717] Config: added 'key_mgmt' value 'WPA-PSK'
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.3717] Config: added 'auth_alg' value 'OPEN'
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.3718] Config: added 'psk' value '<hidden>'
Oct 24 11:20:36 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: SME: Trying to authenticate with a0:04:60:7c:6f:31 (SSID='apname BYOD 5G' freq=5180 MHz)
Oct 24 11:20:36 ThinkPad-T480 kernel: [ 3626.412972] wlp3s0: authenticate with a0:04:60:7c:6f:31
Oct 24 11:20:36 ThinkPad-T480 kernel: [ 3626.421404] wlp3s0: send auth to a0:04:60:7c:6f:31 (try 1/3)
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.4004] device (wlp3s0): supplicant interface state: scanning -> authenticating
Oct 24 11:20:36 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: Trying to associate with a0:04:60:7c:6f:31 (SSID='apname BYOD 5G' freq=5180 MHz)
Oct 24 11:20:36 ThinkPad-T480 kernel: [ 3626.427245] wlp3s0: authenticated
Oct 24 11:20:36 ThinkPad-T480 kernel: [ 3626.429549] wlp3s0: associate with a0:04:60:7c:6f:31 (try 1/3)
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.4114] device (wlp3s0): supplicant interface state: authenticating -> associating
Oct 24 11:20:36 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: Associated with a0:04:60:7c:6f:31
Oct 24 11:20:36 ThinkPad-T480 kernel: [ 3626.430497] wlp3s0: RX AssocResp from a0:04:60:7c:6f:31 (capab=0x1011 status=0 aid=2)
Oct 24 11:20:36 ThinkPad-T480 kernel: [ 3626.432787] wlp3s0: associated
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.4169] device (wlp3s0): supplicant interface state: associating -> associated
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.4322] device (wlp3s0): supplicant interface state: associated -> 4-way handshake
Oct 24 11:20:36 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: WPA: Key negotiation completed with a0:04:60:7c:6f:31 [PTK=CCMP GTK=CCMP]
Oct 24 11:20:36 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: CTRL-EVENT-CONNECTED - Connection to a0:04:60:7c:6f:31 completed [id=1 id_str=]
Oct 24 11:20:36 ThinkPad-T480 kernel: [ 3626.460453] IPv6: ADDRCONF(NETDEV_CHANGE): wlp3s0: link becomes ready
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.4442] device (wlp3s0): supplicant interface state: 4-way handshake -> completed
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.4442] device (wlp3s0): Activation: (wifi) Stage 2 of 5 (Device Configure) successful.  Connected to wireless network 'apname BYOD 5G'.
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.4443] device (wlp3s0): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed')
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.4445] dhcp4 (wlp3s0): activation: beginning transaction (timeout in 45 seconds)
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.4458] dhcp4 (wlp3s0): dhclient started with pid 8686
Oct 24 11:20:36 ThinkPad-T480 kernel: [ 3626.480707] wlp3s0: Limiting TX power to 23 (23 - 0) dBm as advertised by a0:04:60:7c:6f:31
Oct 24 11:20:36 ThinkPad-T480 dhclient[8686]: DHCPREQUEST of 192.168.44.148 on wlp3s0 to 255.255.255.255 port 67 (xid=0x2dca9e26)
Oct 24 11:20:36 ThinkPad-T480 dhclient[8686]: DHCPACK of 192.168.44.148 from 192.168.44.254
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.4823] dhcp4 (wlp3s0):   address 192.168.44.148
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.4823] dhcp4 (wlp3s0):   plen 24 (255.255.255.0)
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.4823] dhcp4 (wlp3s0):   gateway 192.168.44.254
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.4823] dhcp4 (wlp3s0):   lease time 604800
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.4823] dhcp4 (wlp3s0):   nameserver '83.164.192.4'
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.4824] dhcp4 (wlp3s0):   nameserver '83.164.193.5'
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.4824] dhcp4 (wlp3s0): state changed unknown -> bound
Oct 24 11:20:36 ThinkPad-T480 avahi-daemon[1120]: Joining mDNS multicast group on interface wlp3s0.IPv4 with address 192.168.44.148.
Oct 24 11:20:36 ThinkPad-T480 avahi-daemon[1120]: New relevant interface wlp3s0.IPv4 for mDNS.
Oct 24 11:20:36 ThinkPad-T480 avahi-daemon[1120]: Registering new address record for 192.168.44.148 on wlp3s0.IPv4.
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.4851] device (wlp3s0): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed')
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.4857] device (wlp3s0): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed')
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.4859] device (wlp3s0): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed')
Oct 24 11:20:36 ThinkPad-T480 dhclient[8686]: bound to 192.168.44.148 -- renewal in 253062 seconds.
Oct 24 11:20:36 ThinkPad-T480 NetworkManager[1173]: <info>  [1571908836.4953] device (wlp3s0): Activation: successful, device activated.
Oct 24 11:20:36 ThinkPad-T480 dbus-daemon[1139]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service' requested by ':1.11' (uid=0 pid=1173 comm="/usr/sbin/NetworkManager --no-daemon " label="unconfined")
Oct 24 11:20:36 ThinkPad-T480 systemd[1]: Starting Network Manager Script Dispatcher Service...
Oct 24 11:20:36 ThinkPad-T480 dbus-daemon[1139]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
Oct 24 11:20:36 ThinkPad-T480 systemd[1]: Started Network Manager Script Dispatcher Service.
Oct 24 11:20:36 ThinkPad-T480 nm-dispatcher: req:1 'up' [wlp3s0]: new request (1 scripts)
Oct 24 11:20:36 ThinkPad-T480 nm-dispatcher: req:1 'up' [wlp3s0]: start running ordered scripts...
Oct 24 11:20:36 ThinkPad-T480 systemd-resolved[912]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
Oct 24 11:20:36 ThinkPad-T480 systemd-resolved[912]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
Oct 24 11:20:38 ThinkPad-T480 avahi-daemon[1120]: Joining mDNS multicast group on interface wlp3s0.IPv6 with address fe80::5eb2:7428:835c:e20e.
Oct 24 11:20:38 ThinkPad-T480 avahi-daemon[1120]: New relevant interface wlp3s0.IPv6 for mDNS.
Oct 24 11:20:38 ThinkPad-T480 avahi-daemon[1120]: Registering new address record for fe80::5eb2:7428:835c:e20e on wlp3s0.*.
Oct 24 11:20:48 ThinkPad-T480 wpa_supplicant[1205]: wlp3s0: CTRL-EVENT-SCAN-STARTED


I have even tried downgrading wpasupplicant as mentioned in https://askubuntu.com/questions/1046810/cannot-downgrade-wpa-supplicant-to-fix-wi-fi-connection-to-a-corporate-network. libssl was downgraded to 1.0.2g-1ubuntu4.15.

snadar@ThinkPad-T480:~$ apt-cache policy wpasupplicant 
wpasupplicant:
  Installed: 2.1-0ubuntu7.3
  Candidate: 2.1-0ubuntu7.3

snadar@ThinkPad-T480:~$ apt-cache policy libssl1.0.0
libssl1.0.0:
  Installed: 1.0.2g-1ubuntu4.15
  Candidate: 1.0.2g-1ubuntu4.15


Tried forgetting the network and connecting again as mentioned in https://askubuntu.com/questions/1036226/unable-to-connect-to-university-wifi-on-ubuntu-18-04-lts?noredirect=1&lq=1

My colleague has the latest OpenSuse and he has the same problem. Android phones are connecting without any issue. So are Macs and Windows machines.