@sforshee: No, wifi had been stable on Bionic before that. Somehow it seems 
quite stable again now. I got this laptop in September, so I installed Bionic 
I have checked my syslog, and I don't see the microcode loading errors anymore.

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  iwlwifi Microcode SW error detected.  Restarting 0x2000000.

Status in linux package in Ubuntu:
Status in linux-firmware package in Ubuntu:

Bug description:
  This seems to be a return of an existing bug, in newer hardware and
  microcode versions.

  Wireless card: Intel Corporation Wireless 8265 / 8275 [8086:24fd] (rev 78)
  Firmware version: 34.0.1
  Description:    Ubuntu 18.04.1 LTS

  Frequent errors as soon as I connect to wifi:
  Microcode SW error detected.  Restarting 0x2000000.

  Expected to happen: Great and stable wifi like a couple of weeks ago
  What happens: very slow, intermittent internet access, lots of ping loss

  Found a suggestion of a workaround: adding these lines to


  These lines were already there, not added by me.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: linux-firmware 1.173.2 [modified: lib/firmware/iwlwifi-8265-36.ucode]
  ProcVersionSignature: Ubuntu 4.15.0-39.42-generic 4.15.18
  Uname: Linux 4.15.0-39-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.9-0ubuntu7.5
  Architecture: amd64
  Date: Fri Nov 23 15:23:54 2018

  InstallationDate: Installed on 2018-09-03 (81 days ago)
  InstallationMedia: Kubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 
  PackageArchitecture: all
  SourcePackage: linux-firmware
  UpgradeStatus: No upgrade log present (probably fresh install)

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