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NetworkManager: Manages network interfaces only after reloading of kernel module

Ahoj,

In my new installation, I use NetworkManager.

I am on an OpenRC based system, and I have according to pacman -Qqs 'networkmanager|nm\-' the following NetworkManager related packages installed:
Code: [Select]
libnm
libnma
libnma-common
network-manager-sstp
networkmanager
networkmanager-l2tp
networkmanager-openconnect
networkmanager-openrc
networkmanager-openvpn
networkmanager-pptp
networkmanager-qt
networkmanager-ssh
networkmanager-strongswan
networkmanager-vpnc
nm-connection-editor
nm-duid
nm-tray
ovpnsplit
python-protonvpn-nm-lib

NetworkManager initscript is activated in the "boot" runlevel.

After system startup, NetworkManager does not recognise the network devices. I have to unload their kernel modules and reload them so that NetworkManager recognises them.

Previously it was only with wlan0, while eth0 was still recognised. Then I had during computer uptime unloaded and reloaded the driver for eth0, and now after a reboot NetworkManager also does not recognise eth0 until I unload and reload it's kernel module. But both wlan0 and eth0 are present and can be managed manually e.g. by ifconfig and iwconfig.

nmcli device after everything has been sorted:
Code: [Select]
DEVICE         TYPE      STATE                   CONNECTION   
wlan0          wifi      connected               WLAN opiplus 
lo             loopback  connected (externally)  lo           
eth0           ethernet  disconnected            --           
p2p-dev-wlan0  wifi-p2p  disconnected            --          

When I do a /etc/init.d/NetworkManeger restart after I have reloaded the kernel module, NetworkManage also manages the devices automatically. So it is really somehow a boot issue, not an isolated NetworkManager start issue.

Anyone an idea what might go awry here, and how to track it down?

Output of rc-update:
Code: [Select]
NetworkManager | boot                                  
                acpid | boot                                  
          agetty.tty1 |      default                          
          agetty.tty2 |      default                          
          agetty.tty3 |      default                          
          agetty.tty4 |      default                          
          agetty.tty5 |      default                          
          agetty.tty6 |      default                          
            alsasound | boot                                  
               binfmt | boot                                  
             bootmisc | boot                                  
              cgroups |                                 sysinit
                cupsd |      default                          
                 dbus |      default                          
                devfs |                                 sysinit
                dmesg |                                 sysinit
              dovecot |      default                          
             dropbear |      default                          
              elogind | boot                                  
                fcron |      default                          
                 fsck | boot                                  
                  gpm | boot                                  
             hostname | boot                                  
              hwclock | boot                                  
              keymaps | boot                                  
            killprocs |                        shutdown       
    kmod-static-nodes |                                 sysinit
                local |      default nonetwork                
           localmount | boot                                  
             loopback | boot                                  
              metalog | boot                                  
              modules | boot                                  
             mount-ro |                        shutdown       
                 mtab | boot                                  
               net.lo | boot                                  
             netmount |      default                          
         opensysusers | boot                                  
     opentmpfiles-dev |                                 sysinit
   opentmpfiles-setup | boot                                  
              postfix |      default                          
               procfs | boot                                  
                 root | boot                                  
         save-keymaps | boot                                  
    save-termencoding | boot                                  
            savecache |                        shutdown       
                 sddm |      default                          
              seedrng | boot                                  
                 swap | boot                                  
               sysctl | boot                                  
                sysfs |                                 sysinit
         termencoding | boot                                  
                 udev |                                 sysinit
         udev-trigger |                                 sysinit
                uksmd |      default      

grep . /etc/rc.conf | grep -v '^#' (i.e. lines that have non-commented out content):
Code: [Select]
rc_parallel="NO"
rc_interactive="YES"
rc_shell=/usr/bin/sulogin
rc_depend_strict="NO"
rc_logger="NO"
rc_log_path="/var/log/rc.log"
rc_verbose=no
rc_start_wait=0
rc_crashed_stop=NO
rc_crashed_start=YES
rc_nocolor=NO
unicode="YES"
rc_tty_number=12

State after reboot, and NetworkManager.conf

Reply #2 –
And here I have the output of nmcli device and nmcli device show straight after reboot:

Code: [Select]
DEVICE  TYPE      STATE                   CONNECTION 
lo      loopback  connected (externally)  lo         
eth0    ethernet  unmanaged               --         
wlan0   wifi      unmanaged               --        
Code: [Select]
GENERAL.DEVICE:                         lo
GENERAL.TYPE:                           loopback
GENERAL.HWADDR:                         00:00:00:00:00:00
GENERAL.MTU:                            65536
GENERAL.STATE:                          100 (connected (externally))
GENERAL.CONNECTION:                     lo
GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveConnection/1
IP4.ADDRESS[1]:                         127.0.0.1/8
IP4.GATEWAY:                            --
IP4.ROUTE[1]:                           dst = 127.0.0.0/8, nh = 127.0.0.1, mt = 0
IP6.ADDRESS[1]:                         ::1/128
IP6.GATEWAY:                            --

GENERAL.DEVICE:                         eth0
GENERAL.TYPE:                           ethernet
GENERAL.HWADDR:                         00:9E:9F:03:02:A6
GENERAL.MTU:                            1500
GENERAL.STATE:                          10 (unmanaged)
GENERAL.CONNECTION:                     --
GENERAL.CON-PATH:                       --
WIRED-PROPERTIES.CARRIER:               off
IP4.GATEWAY:                            --
IP6.GATEWAY:                            --

GENERAL.DEVICE:                         wlan0
GENERAL.TYPE:                           wifi
GENERAL.HWADDR:                         B8:9A:2A:40:D6:D4
GENERAL.MTU:                            1500
GENERAL.STATE:                          10 (unmanaged)
GENERAL.CONNECTION:                     --
GENERAL.CON-PATH:                       --
IP4.GATEWAY:                            --
IP6.GATEWAY:                            --

Note that when I unload and then reload the kernel module for eth0 and wlan0 it changes from "unmanaged" to "disconnected" or "connected" (i.e. managed by NetworkManager).

My /etc/NetworkManager/NetworkManager.conf (except blank lines and lines that are only comments, and private ping test URI censored):
Code: [Select]
[main]
plugins=keyfile
dhcp=dhcpcd
no-auto-default=*
ignore-carrier=*
hostname-mode=none
dns=default
rc-manager=resolvconf
systemd-resolved=false
autoconnect-retries-default=2
slaves-order=name
[logging]
level=INFO
domains=ALL
backend=syslog
ethernet.cloned-mac-address=preserve
wifi.cloned-mac-address=stable
[device]
wifi.scan-rand-mac-address=true
[connectivity]
enabled=true
uri=<censored>
response=NetworkManager is online
interval=60

Re: NetworkManager: Manages network interfaces only after reloading of kernel module

Reply #3 –
Quote from: nous – on
Quote from: dreieck – on
NetworkManager initscript is activated in the "boot" runlevel.
My bet is "boot" is too early. Put it in "default".
No, this did not help.

Also note that this problem was not there initially; it only appeared after I manually once unloaded the corresponding kernel module, and then persisted.

EDIT:

A simple restart of NetworkManager (rc-service NetworkManager restart) does not help,
and if I unload and reload the kernel module when NetworkManager is stopped, it also helps:

Code: [Select]
rc-service NetworkManager stop

rmmod r8169
rmmod realtek
rmmod mdio_devres

modprobe r8169
ethtool -s eth0 wol d

rc-service NetworkManager start
does work; NetworkManager state seems not to be relevant.

Also if I stop NetworkManager, onload the driver for eth0 and wlan0, start NetworkManager, and only then load the drivers, NetworkManager then starts to manage the interfaces.

What other daemons might be doing stuff with network?

Re: NetworkManager: Manages network interfaces only after reloading of kernel module

Reply #4 –
Look what dmesg says. Maybe there will be some clues.

Also, have you tried to add these modules in initcpio?

Solution: I had a manual mount on /run, which broke things.

Reply #5 –
Solved:

Turned out that I manually mounted some temporary filesystem at /run, not having recognised that the init scripts already mount a tmpfs there.

So there is a time where /run gets over-mounted and so the old content hidden. And this broke things.

I now removed my manual mount and NetworkManager at bootup works as expected.

Regards!