Public bug reported:

I apologize if this is a repeat of the bug I filed a couple of days ago,
but I don't see on launchpad that it shows I filed a bug, so I am
filling another.  Also didn't know what to file the bug under so I chose
network-manager.  It appears to be a bug with kernel 5.3.0-43.

I updated to latest kernel: initrd.img-5.3.0-43-generic and find that my 
network is in airplane mode. ifconfig shows there is no wireless interface 
setup. When I go back to kernel 5.3.0-42 everything is working correctly. I am 
using an HP laptop.
I can see the wireless network controller with lshw:

lshw -C network
  *-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: eno1
       version: 15
       serial: b4:b6:86:e7:67:29
       size: 100Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet 
physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 duplex=full 
firmware=rtl8168h-2_0.0.2 02/26/15 ip=192.168.1.108 latency=0 link=yes 
multicast=yes port=MII speed=100Mbit/s
       resources: irq:38 ioport:e000(size=256) memory:fe904000-fe904fff 
memory:fe900000-fe903fff
  *-network
       description: Network controller
       product: Dual Band Wireless-AC 3168NGW [Stone Peak]
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:03:00.0
       version: 10
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list
       configuration: driver=iwlwifi latency=0
       resources: irq:43 memory:fe800000-fe801fff

lspci |grep Network
03:00.0 Network controller: Intel Corporation Dual Band Wireless-AC 3168NGW 
[Stone Peak] (rev 10)

iwconfig
lo no wireless extensions.

eno1 no wireless extensions.

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: network-manager 1.20.4-2ubuntu2.2
ProcVersionSignature: Ubuntu 5.3.0-43.36-generic 5.3.18
Uname: Linux 5.3.0-43-generic x86_64
ApportVersion: 2.20.11-0ubuntu8.7
Architecture: amd64
Date: Mon Mar 23 05:37:31 2020
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2018-11-30 (479 days ago)
InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3)
IwConfig:
 eno1      no wireless extensions.
 
 lo        no wireless extensions.
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
RfKill:
 0: hci0: Bluetooth
        Soft blocked: yes
        Hard blocked: no
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.NetworkManager.conf.d.default-wifi-powersave-on.conf:
 [connection]
 wifi.powersave = 2
mtime.conffile..etc.NetworkManager.conf.d.default-wifi-powersave-on.conf: 
2018-11-29T22:07:37.505878
nmcli-dev:
 DEVICE  TYPE      STATE      IP4-CONNECTIVITY  IP6-CONNECTIVITY  DBUS-PATH     
                             CONNECTION          CON-UUID                       
       CON-PATH                                           
 eno1    ethernet  connected  full              limited           
/org/freedesktop/NetworkManager/Devices/2  Wired connection 1  
b6cda306-c004-3fd6-89b9-1be0460aa25d  
/org/freedesktop/NetworkManager/ActiveConnection/1 
 lo      loopback  unmanaged  unknown           unknown           
/org/freedesktop/NetworkManager/Devices/1  --                  --               
                     --
nmcli-nm:
 RUNNING  VERSION  STATE      STARTUP  CONNECTIVITY  NETWORKING  WIFI-HW  WIFI  
   WWAN-HW  WWAN    
 running  1.20.4   connected  started  full          enabled     enabled  
enabled  enabled  enabled

** Affects: network-manager (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug eoan

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https://bugs.launchpad.net/bugs/1868544

Title:
  Missing wireless network interface after kernel 5.3.0-43 installed

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