[Bug 1825206] Re: No wifi adapter present in Gnome after upgrade to 0.96-0ubuntu0.18.10.2

Fri Apr 19 20:48:06 UTC 2019

> I installed Ubuntu cosmic via the netboot ISO.

That explains, thanks.  The netboot ISO uses d-i, so will create this
file at install time.

And I see that netcfg/finish-install.d/55netcfg-copy-config also has handling for
/etc/netplan/01-network-manager-all.yaml; so BOTH files are created with netcfg, which I don't think is the expected behavior.  At least, if we are creating a global file declaring that the network should be managed by NM, the generated /etc/netplan/01-netcfg.yaml should ALSO direct that the configured interface is managed by NM, NOT by networkd.

So with a VM installed using cosmic d-i mini ISO, I get:

# cat /etc/netplan/01-network-manager-all.yaml
# Let NetworkManager manage all devices on this system
network:
  version: 2
  renderer: NetworkManager
# cat /etc/netplan/01-netcfg.yaml
# This file describes the network interfaces available on your system
# For more information, see netplan(5).
network:
  version: 2
  renderer: networkd
  ethernets:
    ens3:
      dhcp4: yes
# nmcli d
DEVICE  TYPE      STATE      CONNECTION
ens3    ethernet  connected  Wired connection 1
lo      loopback  unmanaged  --
$ networkctl list
WARNING: systemd-networkd is not running, output will be incomplete.

IDX LINK             TYPE               OPERATIONAL SETUP
  1 lo               loopback           n/a         unmanaged
  2 ens3             ether              n/a         unmanaged

2 links listed.
#

With netplan 0.40.2.2, if I rename /etc/netplan/01-netcfg.yaml to
/etc/netplan/02-netcfg.yaml, now I see:

# mv /etc/netplan/01-netcfg.yaml /etc/netplan/02-netcfg.yaml
# netplan --debug apply
** (generate:2203): DEBUG: 13:13:12.964: Processing input file /etc/netplan/01-network-manager-all.yaml..
** (generate:2203): DEBUG: 13:13:12.964: starting new processing pass
** (generate:2203): DEBUG: 13:13:12.964: Processing input file /etc/netplan/02-netcfg.yaml..
** (generate:2203): DEBUG: 13:13:12.964: starting new processing pass
** (generate:2203): DEBUG: 13:13:12.964: ens3: setting default backend to 1
** (generate:2203): DEBUG: 13:13:12.964: Generating output files..
** (generate:2203): DEBUG: 13:13:12.964: NetworkManager: definition ens3 is not for us (backend 1)
(generate:2003): GLib-DEBUG: 13:13:12.964: posix_spawn avoided (fd close requested)
DEBUG: netplan generated networkd configuration exists, restarting networkd
DEBUG: no netplan generated NM configuration exists
DEBUG:ens3 not found in {}
DEBUG:Merged config:
network:
  bonds: {}
  bridges: {}
  ethernets:
    ens3:
      dhcp4: true
  vlans: {}
  wifis: {}

DEBUG:Skipping non-physical interface: lo
DEBUG:device ens3 operstate is up, not changing
DEBUG:{}
DEBUG:netplan triggering .link rules for lo
DEBUG:netplan triggering .link rules for ens3
# service NetworkManager restart # (done in order to force NM to see the config changes, since netplan did not restart it on netplan apply)
# nmcli d
DEVICE  TYPE      STATE      CONNECTION
ens3    ethernet  unmanaged  --
lo      loopback  unmanaged  --
$ networkctl list
IDX LINK             TYPE               OPERATIONAL SETUP
  1 lo               loopback           n/a         unmanaged
  2 ens3             ether              routable    configured

2 links listed.
#

If I restore the original config (mv 02-netcfg.yaml 01-netcfg.yaml),
reboot to clear the systemd-networkd state, then upgrade to netplan 0.96
from cosmic-proposed, I get the same state as when using 02-netcfg.yaml
on netplan 0.40.2.2.

So there are a couple of things here.

- netcfg is definitely buggy, for the desktop install case; it is outputting instructions to netplan telling it both to use NM and to use networkd.  It should more clearly specify exactly what it wants the installed system to do.  I believe the intent is that NM is used for everything, when NM is installed; but in that case, either 01-netcfg.yaml should be cleaned up if it is not needed, or should be corrected to specify NM if the intent is to pass install-time configuration through to the installed system.
- it is documented that configuration settings in lexicographically-later files in /etc/netplan take precedence over earlier ones; however, netplan.io 0.96 appears to treat /etc/netplan/01-netcfg.yaml as taking precedence.  Perhaps this is because /etc/netplan/01-network-manager-all.yaml contains no device settings, only the global renderer selection.  In that case, I think it's not obvious that global settings would be excluded in this way from the normal precedence rules.

** Changed in: netplan.io (Ubuntu)
       Status: Incomplete => Triaged

** Also affects: netcfg (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: netcfg (Ubuntu)
       Status: New => Triaged

** Changed in: netcfg (Ubuntu)
   Importance: Undecided => Medium

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to netcfg in Ubuntu.
Matching subscriptions: foundations-bugs
https://bugs.launchpad.net/bugs/1825206

Title:
  No wifi adapter present in Gnome after upgrade to
  0.96-0ubuntu0.18.10.2

Status in netcfg package in Ubuntu:
  Triaged
Status in netplan.io package in Ubuntu:
  Triaged

Bug description:
  Ubuntu release: 18.10 (cosmic)

  I verified this is the culprit after a downgrade to 0.42.2. When I go
  to the Wifi settings of gnome-control-center I get a 'wifi adapter not
  found' message, despite my card appearing in `lspci` and the wifi
  interface appearing in ifconfig.

  My wifi adapter is an Intel Advanced-N 6200, if that is of any help. I
  can provide more details if needed.

  EDIT: I've verified that I can add my wifi credentials to
  /etc/netplan/01-netcfg.yml and after a reboot the wifi connects
  successfully. The only thing not working is the Gnome integration.

  EDIT 2: More details:
  gnome-shell version: 3.30.2-0ubuntu1.18.10.1
  gnome-control-center version: 1:3.30.2-1ubuntu0.18.10.2
  --- 
  ProblemType: Bug
  ApportVersion: 2.20.10-0ubuntu13.2
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  DistroRelease: Ubuntu 18.10
  Package: netplan.io 0.96-0ubuntu0.18.10.2 [origin: unknown]
  PackageArchitecture: amd64
  ProcVersionSignature: Ubuntu 4.18.0-17.18-generic 4.18.20
  Tags: third-party-packages cosmic
  Uname: Linux 4.18.0-17-generic x86_64
  UnreportableReason: Este no es un paquete oficial de Ubuntu. Desinstale cualquier paquete de terceros e inténtelo de nuevo.
  UpgradeStatus: Upgraded to cosmic on 2019-03-03 (46 days ago)
  UserGroups: adm cdrom dialout dip docker lpadmin plugdev sambashare sudo
  _MarkForUpload: True

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/netcfg/+bug/1825206/+subscriptions