Arch Linux

scybhe

Member

Registered: 2014-09-10

Posts: 20

Re: NetworkManager cannot connect Wifi

The relevant networkmanager packages:

$ pacman -Qs networkmanager
local/libnm 1.20.0-1
    NetworkManager client library
local/libnm-glib 1.18.2-1
    NetworkManager client library (legacy)
local/libnma 1.8.22-1
    NetworkManager GUI client library
local/networkmanager 1.20.0-1 (gnome)
    Network connection manager and user applications
local/networkmanager-qt 5.60.0-1 (kf5)
    Qt wrapper for NetworkManager API
local/nm-connection-editor 1.8.22-1
    NetworkManager GUI connection editor and widgets

$ pacman -Qikk networkmanager
Name            : networkmanager
Version         : 1.20.0-1
Description     : Network connection manager and user applications
Architecture    : x86_64
URL             : https://wiki.gnome.org/Projects/NetworkManager
Licenses        : GPL2  LGPL2.1
Groups          : gnome
Provides        : None
Depends On      : libnm  iproute2  polkit  wpa_supplicant  libmm-glib  libnewt  libndp  libteam  curl  bluez-libs  libpsl
                  audit
Optional Deps   : dnsmasq: connection sharing [installed]
                  bluez: Bluetooth support [installed]
                  ppp: dialup connection support [installed]
                  modemmanager: cellular network support [installed]
                  iwd: wpa_supplicant alternative
Required By     : networkmanager-qt
Optional For    : blueman  deepin-daemon  firefox  libproxy
Conflicts With  : None
Replaces        : None
Installed Size  : 15.05 MiB
Packager        : Jan Alexander Steffens (heftig) <jan.steffens@gmail.com>
Build Date      : Tue Aug 6 21:53:38 2019
Install Date    : Tue Aug 13 15:36:10 2019
Install Reason  : Explicitly installed
Install Script  : No
Validated By    : SHA-256 Sum

backup file: networkmanager: /etc/NetworkManager/NetworkManager.conf (Modification time mismatch)
networkmanager: 490 total files, 0 altered files

$ cat /etc/NetworkManager/NetworkManager.conf
# Configuration file for NetworkManager.
# See "man 5 NetworkManager.conf" for details.

WorMzy

Forum Moderator

From: Scotland

Registered: 2010-06-16

Posts: 11,868

Website

Re: NetworkManager cannot connect Wifi

br4no originally suggested a possible solution in this topic (now split to here):

In my case I've found the solution myself. The only thing I did is that I went to my router settings and changed SSID name from "Kralicek" to "kralicek" and voila I can connect. So, in my case the SSID cannot contain (or start with) upper case letter. I have tried also completelly different names which were starting with upper case. None of them worked and it always returned the above error. Whatever SSID starting with lower case works......

---

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Making lemonade from lemons since 2015.

shivamgoyal15

Member

Registered: 2020-02-29

Posts: 1

Re: NetworkManager cannot connect Wifi

I had the same problem and i am also using Deepin DE. I found that this is because deepin intercepts NetworkManager.

When I tried to connect using nmcli before deepin starts, it connects fine.

nmcli connection up 61e0c0dd-e681-424b-89e8-bee0e9624dee

I also found that if we disable random mac address, we can also connect with deepin.
edit /etc/NetworkManager/conf.d/wifi_rand_mac.conf as follows

[device]
wifi.scan-rand-mac-address=no