** Description changed:

  On Live session or after installation, the wifi adapter is recognized,
  the password phrase is accepted but it never connect and loop forever.
  Thinkpad T430 with Intel Centrino 6205
  03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205 
[Taylor Peak] (rev 34)
  It is not a Passphrase issue. Same PC with Debian 9 or 10 works very well.
  Really strange, considering Ubuntu 18.04 is based on Debian 10 !!!
- After comparing many files, it appears that the 2 last files of
+ After comparing many files, it appears that the 2 last lines of
  /etc/NetworkManager/NetworkManager.conf have been added on Ubuntu !
  Debian 10:
-     $ cat /NetworkManager/NetworkManager.conf
-     [main]
-     plugins=ifupdown,keyfile
+     $ cat /NetworkManager/NetworkManager.conf
+     [main]
+     plugins=ifupdown,keyfile
-     [ifupdown]
-     managed=false
+     [ifupdown]
+     managed=false
  Ubuntu 18.04:
-     $ cat /etc/NetworkManager/NetworkManager.conf
-     [main]
-     plugins=ifupdown,keyfile
+     $ cat /etc/NetworkManager/NetworkManager.conf
+     [main]
+     plugins=ifupdown,keyfile
-     [ifupdown]
-     managed=false
+     [ifupdown]
+     managed=false
-     [device]
-     wifi.scan-rand-mac-address=no
+     [device]
+     wifi.scan-rand-mac-address=no
  I removed the last 2 files in Ubuntu 18.04, and now Wifi works
  perfectly. The wifi passphrase is accepted, and even going to sleep mode
  and back is fine.
  I would strongly recommend to modify /etc/NetworkManager/NetworkManager.conf 
in package network-manager to remove the 2 last lines.
  In fact this file should not be modified by Ubuntu and kept as in Debian.
  Is it possible to do it in Ubuntu before 18.04 LTS to be launched ???
  It seems this 2 lines have been added due to bug 1681513:
  As reported here:
  By the way, file NetworkManager.conf is empty in Fedora...

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  Network Manager is unable to connect to Wifi. Ask password and then
  loop forever

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