** Changed in: linux (Ubuntu)
       Status: In Progress => Confirmed

** Changed in: linux (Ubuntu Bionic)
       Status: In Progress => Confirmed

** Changed in: linux (Ubuntu)
     Assignee: Joseph Salisbury (jsalisbury) => (unassigned)

** Changed in: linux (Ubuntu Bionic)
     Assignee: Joseph Salisbury (jsalisbury) => (unassigned)

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  Kernel 4.15.0-39.42 not compatible with Qualcomm Atheros QCA9377

Status in linux package in Ubuntu:
Status in linux source package in Bionic:

Bug description:
  Yesterday I got upgrades including kernel 4.15.0-39, this morning when
  I booted my laptop I was unable to connect or see any wifi networks,
  under closer inspection the whole wireless networking UI was disabled.

  lshw was not showing my wireless adapter.

  Rebooted with 4.15.0-38 and now everything works correctly.

  lshw shows

         description: Wireless interface
         product: QCA9377 802.11ac Wireless Network Adapter
         vendor: Qualcomm Atheros
         physical id: 0
         bus info: pci@0000:03:00.0
         logical name: wlp3s0
         version: 31
         serial: 74:40:bb:a8:4a:a7
         width: 64 bits
         clock: 33MHz
         capabilities: pm msi pciexpress bus_master cap_list ethernet physical 
         configuration: broadcast=yes driver=ath10k_pci 
driverversion=4.15.0-38-generic firmware=WLAN.TF.1.0-00002-QCATFSWPZ-5 
ip= latency=0 link=yes multicast=yes wireless=IEEE 802.11
         resources: irq:131 memory:d2000000-d21fffff

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: linux-image-4.15.0-38-generic 4.15.0-38.41
  ProcVersionSignature: Ubuntu 4.15.0-38.41-generic 4.15.18
  Uname: Linux 4.15.0-38-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.5
  Architecture: amd64
   /dev/snd/controlC0:  ricardoe   2674 F.... pulseaudio
  CurrentDesktop: MATE
  Date: Wed Nov 14 09:31:20 2018
  InstallationDate: Installed on 2018-10-05 (40 days ago)
  InstallationMedia: Ubuntu-MATE 18.04.1 LTS "Bionic Beaver" - Release amd64 
  MachineType: Dell Inc. Inspiron 5570
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-38-generic 
root=UUID=aa7aabab-0040-44e5-a647-26ffb4729da5 ro quiet splash vt.handoff=1
   linux-restricted-modules-4.15.0-38-generic N/A
   linux-backports-modules-4.15.0-38-generic  N/A
   linux-firmware                             1.173.1
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/15/2018
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.1.8
  dmi.board.name: 0Y1T82
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 10
  dmi.chassis.vendor: Dell Inc.
  dmi.product.family: Inspiron
  dmi.product.name: Inspiron 5570
  dmi.sys.vendor: Dell Inc.

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