Network manager doesn't allow password storage of wifi networks with hidden SSID

[Saverio Miroddi]

My home network has a hidden SSID, but the new (compared to 14.04) network manager doesn't allow to store the password, so I have to enter it every time I want to connect (this also applies to reconnections after system wake-up, from standbys).

This is very annoying, and doesn't make much sense, as NM is remembering the network (SSID) - it just doesn't store the password.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: network-manager 1.0.4-0ubuntu5
ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
Uname: Linux 4.2.0-16-generic x86_64
NonfreeKernelModules: zfs zunicode zcommon znvpair zavl nvidia
ApportVersion: 2.19.1-0ubuntu4
Architecture: amd64
CurrentDesktop: XFCE
Date: Sun Nov 1 12:14:06 2015
EcryptfsInUse: Yes
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2015-10-30 (1 days ago)
InstallationMedia: Xubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
IpRoute:
 default via 192.168.2.1 dev wlp4s0 proto static metric 600
 169.254.0.0/16 dev vmnet1 scope link metric 1000
 172.16.1.0/24 dev vmnet8 proto kernel scope link src 172.16.1.1
 192.168.2.0/24 dev wlp4s0 proto kernel scope link src 192.168.2.101 metric 600
 192.168.99.0/24 dev vmnet1 proto kernel scope link src 192.168.99.1
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 2: Error: Object 'nm' is unknown, try 'nmcli help'.