Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: network-manager (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1683836

Title:
  WIFI stoped working when updating 16.10 -> 17.04

Status in network-manager package in Ubuntu:
  Confirmed

Bug description:
  Network manager detects 'Bus 001 Device 004: ID 148f:5370 Ralink
  Technology, Corp. RT5370 Wireless Adapter'. It detects WIFI network,
  but fails to connect. I booted with older kernel
  vmlinuz-4.8.0-46-generic: same result.  I installed ubuntu 16.10 to
  same computer and WIFI does work.  Password is OK.

  Authentication seems to fail in Ubuntu 17.04:
  Apr 18 17:13:01 k10 NetworkManager[727]: <info>
  [1492524781.2784] policy: auto-activating connection 'ZyXELbb3a'
  [1492524781.2798] device (wlxc83a35cde1eb): Activation: starting connection 
'ZyXELbb3a' (5362ba4d-c40e-40a3-8e17-4e3deaab48ae)
  [1492524781.2801] device (wlxc83a35cde1eb): state change: disconnected -> 
prepare (reason 'none') [30 40 0]
  [1492524781.6699] device (wlxc83a35cde1eb): set-hw-addr: set-cloned MAC 
address to C8:3A:35:CD:E1:EB (permanent)
  [1492524781.9391] device (wlxc83a35cde1eb): state change: prepare -> config 
(reason 'none') [40 50 0]
  [1492524781.9394] device (wlxc83a35cde1eb): Activation: (wifi) access point 
'ZyXELbb3a' has security, but secrets are required.
  [1492524781.9395] device (wlxc83a35cde1eb): state change: config -> need-auth 
(reason 'none') [50 60 0]
  [1492524781.9748] device (wlxc83a35cde1eb): state change: need-auth -> 
prepare (reason 'none') [60 40 0]
  [1492524781.9782] device (wlxc83a35cde1eb): state change: prepare -> config 
(reason 'none') [40 50 0]
  [1492524781.9792] device (wlxc83a35cde1eb): Activation: (wifi) connection 
'ZyXELbb3a' has security, and secrets exist.  No new secrets needed.
  [1492524781.9796] Config: added 'ssid' value 'ZyXELbb3a'
  [1492524781.9800] Config: added 'scan_ssid' value '1'
  [1492524781.9803] Config: added 'key_mgmt' value 'WPA-PSK'
  [1492524781.9806] Config: added 'auth_alg' value 'OPEN'
  [1492524781.9808] Config: added 'psk' value '<omitted>'
  [1492524781.9821] sup-iface[0x55d34390d2d0,wlxc83a35cde1eb]: config: set 
interface ap_scan to 1
  [1492524782.0010] device (wlxc83a35cde1eb): supplicant interface state: 
inactive -> scanning
  [1492524783.3941] device (wlxc83a35cde1eb): supplicant interface state: 
scanning -> authenticating
  [1492524783.5787] device (wlxc83a35cde1eb): supplicant interface state: 
authenticating -> disconnected
  [1492524793.5868] device (wlxc83a35cde1eb): supplicant interface state: 
disconnected -> scanning
  [1492524794.9891] device (wlxc83a35cde1eb): supplicant interface state: 
scanning -> authenticating
  [1492524795.1145] device (wlxc83a35cde1eb): supplicant interface state: 
authenticating -> disconnected

  
  Ubuntu 16.10 is same to authentication:
  Apr 18 13:46:10 k15 NetworkManager[714]: <info>
  [1492512370.3874] policy: auto-activating connection 'ZyXELbb3a'
  [1492512370.3884] device (wlxc83a35cde1eb): Activation: starting connection 
'ZyXELbb3a' (fd199068-2375-4268-bb74-d60484d1fadb)
  [1492512370.3886] device (wlxc83a35cde1eb): state change: disconnected -> 
prepare (reason 'none') [30 40 0]
  [1492512370.3887] manager: NetworkManager state is now CONNECTING
  [1492512370.3895] device (wlxc83a35cde1eb): state change: prepare -> config 
(reason 'none') [40 50 0]
  [1492512370.3897] device (wlxc83a35cde1eb): Activation: (wifi) access point 
'ZyXELbb3a' has security, but secrets are required.
  [1492512370.3898] device (wlxc83a35cde1eb): state change: config -> need-auth 
(reason 'none') [50 60 0]
  [1492512370.3936] device (wlxc83a35cde1eb): state change: need-auth -> 
prepare (reason 'none') [60 40 0]
  [1492512370.3940] device (wlxc83a35cde1eb): state change: prepare -> config 
(reason 'none') [40 50 0]
  [1492512370.3943] device (wlxc83a35cde1eb): Activation: (wifi) connection 
'ZyXELbb3a' has security, and secrets exist.  No new secrets needed.
  [1492512370.3943] Config: added 'ssid' value 'ZyXELbb3a'
  [1492512370.3944] Config: added 'scan_ssid' value '1'
  [1492512370.3944] Config: added 'key_mgmt' value 'WPA-PSK'
  [1492512370.3944] Config: added 'auth_alg' value 'OPEN'
  [1492512370.3944] Config: added 'psk' value '<omitted>'
  [1492512370.3949] sup-iface[0x55da7c3f2210,wlxc83a35cde1eb]: config: set 
interface ap_scan to 1
  [1492512371.8005] device (wlxc83a35cde1eb): supplicant interface state: 
inactive -> authenticating
  [1492512371.8071] device (wlxc83a35cde1eb): supplicant interface state: 
authenticating -> associating
  [1492512371.8216] device (wlxc83a35cde1eb): supplicant interface state: 
associating -> 4-way handshake
  [1492512371.8482] device (wlxc83a35cde1eb): supplicant interface state: 4-way 
handshake -> completed
  [1492512371.8482] device (wlxc83a35cde1eb): Activation: (wifi) Stage 2 of 5 
(Device Configure) successful.  Connected to wireless network 'ZyXELbb3a'.
  [1492512371.8483] device (wlxc83a35cde1eb): state change: config -> ip-config 
(reason 'none') [50 70 0]
  [1492512371.8623] dhcp4 (wlxc83a35cde1eb): activation: beginning transaction 
(timeout in 45 seconds)
  Apr 18 13:46:11 k15 NetworkManager[714]: <info>  [1492512371.9292] dhcp4 
(wlxc83a35cde1eb): dhclient started with pid 1027

  ProblemType: Bug
  DistroRelease: Ubuntu 17.04
  Package: network-manager 1.4.4-1ubuntu3
  ProcVersionSignature: Ubuntu 4.10.0-19.21-generic 4.10.8
  Uname: Linux 4.10.0-19-generic x86_64
  ApportVersion: 2.20.4-0ubuntu4
  Architecture: amd64
  CurrentDesktop: Unity:Unity7
  Date: Tue Apr 18 16:56:33 2017
  IfupdownConfig:
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  InstallationDate: Installed on 2017-01-05 (103 days ago)
  InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
  IpRoute:
   default via 192.168.3.1 dev eno1 proto static metric 100 
   169.254.0.0/16 dev eno1 scope link metric 1000 
   192.168.3.0/24 dev eno1 proto kernel scope link src 192.168.3.10 metric 100
  NetworkManager.conf:
   [main]
   plugins=ifupdown,keyfile
   
   [ifupdown]
   managed=false
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
  RfKill:
   0: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
  SourcePackage: network-manager
  UpgradeStatus: Upgraded to zesty on 2017-04-16 (1 days ago)
  nmcli-con:
   NAME              UUID                                  TYPE             
TIMESTAMP   TIMESTAMP-REAL                   AUTOCONNECT  AUTOCONNECT-PRIORITY  
READONLY  DBUS-PATH                                   ACTIVE  DEVICE  STATE     
 ACTIVE-PATH                                        
   KiinteƤ yhteys 1  30d11d14-146e-3091-801b-2fc21d102ad2  802-3-ethernet   
1492523796  ti 18. huhtikuuta 2017 16.56.36  yes          4294966297            
no        /org/freedesktop/NetworkManager/Settings/1  yes     eno1    activated 
 /org/freedesktop/NetworkManager/ActiveConnection/4 
   ZyXELbb3a         5362ba4d-c40e-40a3-8e17-4e3deaab48ae  802-11-wireless  
1492369587  su 16. huhtikuuta 2017 22.06.27  yes          0                     
no        /org/freedesktop/NetworkManager/Settings/0  no      --      --        
 --
  nmcli-dev:
   DEVICE           TYPE      STATE         DBUS-PATH                           
       CONNECTION        CON-UUID                              CON-PATH         
                                  
   eno1             ethernet  connected     
/org/freedesktop/NetworkManager/Devices/1  KiinteƤ yhteys 1  
30d11d14-146e-3091-801b-2fc21d102ad2  
/org/freedesktop/NetworkManager/ActiveConnection/4 
   wlxc83a35cde1eb  wifi      disconnected  
/org/freedesktop/NetworkManager/Devices/2  --                --                 
                   --                                                 
   lo               loopback  unmanaged     
/org/freedesktop/NetworkManager/Devices/0  --                --                 
                   --
  nmcli-nm:
   RUNNING  VERSION  STATE      STARTUP  CONNECTIVITY  NETWORKING  WIFI-HW  
WIFI     WWAN-HW  WWAN    
   running  1.4.4    connected  started  full          enabled     enabled  
enabled  enabled  enabled

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