Since this laptop runs the 5.8 kernel, the WiFi adapter (an Intel Wireless 8260) does not work anymore. It does not show up in "ip a l", and "lshw -C network" shows the following ("UNCLAIMED" stands out):
$ sudo lshw -C network
[sudo] password for chef:
*-network UNCLAIMED
description: Network controller
product: Wireless 8260
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:02:00.0
version: 3a
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress cap_list
configuration: latency=0
resources: memory:e4100000-e4101fff
*-network
description: Ethernet interface
product: Ethernet Connection (2) I219-LM
vendor: Intel Corporation
physical id: 1f.6
bus info: pci@0000:00:1f.6
logical name: enp0s31f6
version: 31
serial: <snip>
size: 1Gbit/s
capacity: 1Gbit/s
width: 32 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k duplex=full firmware=0.8-4 ip=192.168.178.28 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
resources: irq:125 memory:e4300000-e431ffff
When this laptop was running the 5.4 kernel, the wireless interface was working fine. It seems as if the iwlwifi driver does not attach anymore. When running the 5.8 kernel, "dmesg | grep iwlwifi" returns 0 lines, while running on the 5.4 kernel yields the following:
Jan 31 14:48:11 zbook kernel: [ 24.613260] iwlwifi 0000:02:00.0: enabling device (0000 -> 0002)
Jan 31 14:48:11 zbook kernel: [ 24.635261] iwlwifi 0000:02:00.0: Found debug destination: EXTERNAL_DRAM
Jan 31 14:48:11 zbook kernel: [ 24.635263] iwlwifi 0000:02:00.0: Found debug configuration: 0
Jan 31 14:48:11 zbook kernel: [ 24.635790] iwlwifi 0000:02:00.0: loaded firmware version 36.77d01142.0 op_mode iwlmvm
Jan 31 14:48:11 zbook kernel: [ 24.746604] iwlwifi 0000:02:00.0: Detected Intel(R) Dual Band Wireless AC 8260, REV=0x208
Jan 31 14:48:11 zbook kernel: [ 24.753815] iwlwifi 0000:02:00.0: Applying debug destination EXTERNAL_DRAM
Jan 31 14:48:11 zbook kernel: [ 24.754115] iwlwifi 0000:02:00.0: Allocated 0x00400000 bytes for firmware monitor.
Jan 31 14:48:11 zbook kernel: [ 24.824059] iwlwifi 0000:02:00.0: base HW address: <snip>
Jan 31 14:48:11 zbook kernel: [ 24.948350] iwlwifi 0000:02:00.0 wlp2s0: renamed from wlan0
Jan 31 14:48:11 zbook kernel: [ 26.458364] iwlwifi 0000:02:00.0: Applying debug destination EXTERNAL_DRAM
Jan 31 14:48:11 zbook kernel: [ 26.607194] iwlwifi 0000:02:00.0: Applying debug destination EXTERNAL_DRAM
Jan 31 14:48:12 zbook kernel: [ 26.686949] iwlwifi 0000:02:00.0: FW already configured (0) - re-configuring
$ lsb_release -rd
Description: Ubuntu 20.04.2 LTS
Release: 20.04
$ apt-cache policy linux-image-generic-hwe-20.04
linux-image-generic-hwe-20.04:
Installed: (none)
Candidate: 5.8.0.41.46~20.04.27
Version table:
5.8.0.41.46~20.04.27 500
500 http://nl.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
500 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages
5.4.0.26.32 500
500 http://nl.archive.ubuntu.com/ubuntu focal/main amd64 Packages
$ uname -a
Linux zbook 5.8.0-41-generic #46~20.04.1-Ubuntu SMP Mon Jan 18 17:52:23 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.8.0-41-generic 5.8.0-41.46~20.04.1
ProcVersionSignature: Ubuntu 5.8.0-41.46~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-41-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.14
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
Date: Sun Jan 31 15:34:20 2021
InstallationDate: Installed on 2020-09-12 (141 days ago)
InstallationMedia: Xubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
SourcePackage: linux-signed-hwe-5.8
UpgradeStatus: No upgrade log present (probably fresh install)
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.14
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2020-09-12 (141 days ago)
InstallationMedia: Xubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
IwConfig:
lo no wireless extensions.
enp0s31f6 no wireless extensions.
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 8087:0a2b Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Lsusb-t:
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/10p, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/16p, 480M
|__ Port 12: Dev 2, If 0, Class=Wireless, Driver=, 12M
|__ Port 12: Dev 2, If 1, Class=Wireless, Driver=, 12M
MachineType: HP HP ZBook 15 G3
NonfreeKernelModules: nvidia_modeset nvidia
Package: linux (not installed)
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.8.0-41-generic root=UUID=d6536fd6-3aea-443b-a6aa-945031102767 ro
ProcVersionSignature: Ubuntu 5.8.0-41.46~20.04.1-generic 5.8.18
RelatedPackageVersions:
linux-restricted-modules-5.8.0-41-generic N/A
linux-backports-modules-5.8.0-41-generic N/A
linux-firmware 1.187.9
RfKill:
Tags: focal
Uname: Linux 5.8.0-41-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dialout dip fax floppy netdev plugdev tape vboxusers video
_MarkForUpload: True
dmi.bios.date: 11/01/2016
dmi.bios.release: 1.12
dmi.bios.vendor: HP
dmi.bios.version: N81 Ver. 01.12
dmi.board.name: 80D5
dmi.board.vendor: HP
dmi.board.version: KBC Version 10.66
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.ec.firmware.release: 16.102
dmi.modalias: dmi:bvnHP:bvrN81Ver.01.12:bd11/01/2016:br1.12:efr16.102:svnHP:pnHPZBook15G3:pvr:rvnHP:rn80D5:rvrKBCVersion10.66:cvnHP:ct10:cvr:
dmi.product.family: 103C_5336AN
dmi.product.name: HP ZBook 15 G3
dmi.product.sku: X7S06EC#ABU
dmi.sys.vendor: HP
apport information