@Meluco  I don't in any way think nvidia-340 likely to affect wifi, but test 
your wifi on all the kernels, especially 5.4.0-62-generic and 5.8.0-38-generic.
Do hold down shift early at system startup to get in GRUB boot menu (exact 
timing depends upon system), you should be able to get into "Advanced options 
for Ubuntu" and boot with different kernels.  Seems like nvidia-340 likely to 
work in all cases, you seem to have dkms compiled for all.
If there is a kernel<>wifi issue in current 5.8.0-38 or 5.4.0-62-generic please 
search for that bug / report that bug separately to this bug, note what kernels 
it does/doesn't work with, and so-on.

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to nvidia-graphics-drivers-340 in Ubuntu.
https://bugs.launchpad.net/bugs/1910709

Title:
  DKMS linux-headers-5.8.0-34-generic update brokes nvidia-340

Status in nvidia-graphics-drivers-340 package in Ubuntu:
  Confirmed
Status in nvidia-graphics-drivers-340 source package in Focal:
  Fix Committed

Bug description:
  [Impact]
  nvidia-340 dkms fails to build against the current HWE kernel in focal, 
regressing the user experience.

  [Test case]
  Install the update, check that the dkms builds and works.

  [Where things could go wrong]
  The changes only add support for newer kernels so that the module can build, 
and it's identical to what's in groovy. In theory it could break the build 
against 5.4 but that's highly unlikely.

  
  --

  Last linux kernel update "linux-headers-5.8.0-34-generic" broke
  nvidia-340 driver and Desktop access. In make log:

  [...]
  echo >&2;                                                     \
  echo >&2 "  ERROR: Kernel configuration is invalid.";         \
  echo >&2 "         include/generated/autoconf.h or include/config/auto.conf 
are missing.";\
  echo >&2 "         Run 'make oldconfig && make prepare' on kernel src to fix 
it.";    \
  echo >&2 ;
  [...]

  Full DKMS log file attacked.
  ---
  ProblemType: Bug
  ApportVersion: 2.20.11-0ubuntu27.14
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  DistroRelease: Ubuntu 20.04
  InstallationDate: Installed on 2020-11-04 (64 days ago)
  InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
  MachineType: Gigabyte Technology Co., Ltd. H81M-D3H
  NonfreeKernelModules: nvidia
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=es_ES.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-59-generic 
root=UUID=b0ed05d5-7921-451b-b62c-773b97eeca2f ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 5.4.0-59.65-generic 5.4.78
  RelatedPackageVersions:
   linux-restricted-modules-5.4.0-59-generic N/A
   linux-backports-modules-5.4.0-59-generic  N/A
   linux-firmware                            1.187.7
  RfKill:
   0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
  Tags:  focal
  Uname: Linux 5.4.0-59-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: sudo
  WifiSyslog:

  _MarkForUpload: True
  dmi.bios.date: 01/20/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: F2
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: H81M-D3H
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.board.version: x.x
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrF2:bd01/20/2014:svnGigabyteTechnologyCo.,Ltd.:pnH81M-D3H:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnH81M-D3H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.family: To be filled by O.E.M.
  dmi.product.name: H81M-D3H
  dmi.product.sku: To be filled by O.E.M.
  dmi.product.version: To be filled by O.E.M.
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.
  ---
  ProblemType: Bug
  ApportVersion: 2.20.11-0ubuntu27.14
  Architecture: amd64
  CasperMD5CheckResult: skip
  DistroRelease: Ubuntu 20.04
  InstallationDate: Installed on 2020-11-04 (64 days ago)
  InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
  MachineType: Gigabyte Technology Co., Ltd. H81M-D3H
  NonfreeKernelModules: nvidia
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=es_ES.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-59-generic 
root=UUID=b0ed05d5-7921-451b-b62c-773b97eeca2f ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 5.4.0-59.65-generic 5.4.78
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No 
PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-5.4.0-59-generic N/A
   linux-backports-modules-5.4.0-59-generic  N/A
   linux-firmware                            1.187.7
  RfKill:
   0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
  Tags:  focal
  Uname: Linux 5.4.0-59-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: N/A
  _MarkForUpload: True
  dmi.bios.date: 01/20/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: F2
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: H81M-D3H
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.board.version: x.x
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrF2:bd01/20/2014:svnGigabyteTechnologyCo.,Ltd.:pnH81M-D3H:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnH81M-D3H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.family: To be filled by O.E.M.
  dmi.product.name: H81M-D3H
  dmi.product.sku: To be filled by O.E.M.
  dmi.product.version: To be filled by O.E.M.
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.

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