Strangely enough, no issue on Fedora 27 or Debian 9 Jessie nor Debian 10 Buster.
Really strange, considering Ubuntu 18.04 is based on Debian 10 !!!
After comparing many files, it appears that the 2 last files of
/etc/NetworkManager/NetworkManager.conf have been added on Ubuntu !
Debian 10:
cat /NetworkManager/NetworkManager.conf
[main]
plugins=ifupdown,keyfile
[ifupdown]
managed=false
Ubuntu 18.04:
cat /etc/NetworkManager/NetworkManager.conf
[main]
plugins=ifupdown,keyfile
[ifupdown]
managed=false
[device]
wifi.scan-rand-mac-address=no
I removed this 2 files, 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 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:
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1681513
As reported here:
https://askubuntu.com/questions/905283/wifi-issue-with-ubuntu-17-04
By the way, file NetworkManager.conf is empty in Fedora.
Cheers
Fred
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to network-manager in Ubuntu.
https://bugs.launchpad.net/bugs/1603815
Title:
after updating to ubuntu 16.04 the network manager is unable to
connect me to the wifi network. I can see the network, but once I
introduce the password, it asks me for the password after a few
seconds and never connects.
Status in network-manager package in Ubuntu:
Confirmed
Bug description:
after updating to ubuntu 16.04 the network manager is unable to
connect me to the wifi network. I can see the network, but once I
introduce the password, it asks me for the password after a few
seconds and never connects. I use different devices connected to the
same wifi so it is not a problem of writting the wrong password.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: network-manager 1.1.93-0ubuntu4
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Jul 17 16:58:17 2016
IfupdownConfig:
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
InstallationDate: Installed on 2016-07-16 (1 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64
(20160420.1)
IpRoute:
default via 192.168.2.1 dev enp2s0 proto static metric 100
169.254.0.0/16 dev enp2s0 scope link metric 1000
192.168.2.0/24 dev enp2s0 proto kernel scope link src 192.168.2.242
metric 100
NetworkManager.state:
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-con:
NAME UUID TYPE
TIMESTAMP TIMESTAMP-REAL AUTOCONNECT AUTOCONNECT-PRIORITY
READONLY DBUS-PATH ACTIVE DEVICE STATE
ACTIVE-PATH
Conexión cableada 1 9e376788-1744-46de-a314-eeb07aad8c13 802-3-ethernet
1468789026 dom 17 jul 2016 16:57:06 CDT yes 4294966297 no
/org/freedesktop/NetworkManager/Settings/2 yes enp2s0 activated
/org/freedesktop/NetworkManager/ActiveConnection/1
BELL419 2 8bd64cc4-181f-449b-95a3-edc74cf2a9a6 802-11-wireless
0 never yes 0 no
/org/freedesktop/NetworkManager/Settings/1 no -- -- --
nmcli-dev:
DEVICE TYPE STATE DBUS-PATH
CONNECTION CON-UUID CON-PATH
enp2s0 ethernet connected /org/freedesktop/NetworkManager/Devices/1
Conexión cableada 1 9e376788-1744-46de-a314-eeb07aad8c13
/org/freedesktop/NetworkManager/ActiveConnection/1
wlp3s0b1 wifi disconnected /org/freedesktop/NetworkManager/Devices/0
-- -- --
lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/2
-- -- --
nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code
2: Error: Object 'nm' is unknown, try 'nmcli help'.
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