apport information

** Attachment added: "ProcModules.txt"
   
https://bugs.launchpad.net/bugs/1884025/+attachment/5385196/+files/ProcModules.txt

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https://bugs.launchpad.net/bugs/1884025

Title:
  iwlwifi not loading on kernel 5.4.0.37.40

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  I have a lenovo thinkpad E550 that has had kubuntu installed starting with 
18.04, now updated to 20.04, I never had problems with wifi until last kernel 
update.
  If I boot with 5.4.0-33.37 the wireless connection acts normally, it's mostly 
stable and I have no major issues.
  If I boot with 5.4.0-37.41 there is a message like this and the wireless 
interface is not activated:

  [   16.227170] kernel: iwlwifi 0000:04:00.0: enabling device (0000 -> 0002)
  [   16.227328] kernel: iwlwifi 0000:04:00.0: HW_REV=0xFFFFFFFF, PCI issues?
  [   16.275802] kernel: iwlwifi: probe of 0000:04:00.0 failed with error -5

  
  There are similar issue with previous releases, but none seem to have fixed 
the problem, some of the more informatives (apparently it's either a kernel 
issue fixed with kernel 5.6 or a firmware loaded incorrectly):
   - https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1867026
   - https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1865962


  System specifications:

  System:    Host: pc Kernel: 5.4.0-33-generic x86_64 bits: 64 Console: tty 0 
             Distro: Ubuntu 20.04 LTS (Focal Fossa) 
  Machine:   Type: Laptop System: LENOVO product: 20DF004USP v: ThinkPad E550 
serial: ---
             Mobo: LENOVO model: 20DF004USP v: SDK0E50510 WIN serial: ---
             UEFI [Legacy]: LENOVO v: J5ET54WW (1.25 ) date: 07/18/2016 
  CPU:       Topology: Dual Core model: Intel Core i7-5500U bits: 64 type: MT 
MCP L2 cache: 4096 KiB 
             Speed: 798 MHz min/max: 500/3000 MHz Core speeds (MHz): 1: 798 2: 
798 3: 798 4: 798 
  Network:   Device-1: Intel Ethernet I218-V driver: e1000e 
             IF: enp0s25 state: down mac: 68:f7:28:5f:d7:27
             Device-2: Intel Wireless 3160 driver: iwlwifi 
             IF: wlp4s0 state: up mac: d0:7e:35:84:92:57 
             IF-ID-1: lxcbr0 state: down mac: 00:16:3e:00:00:00
  --- 
  ProblemType: Bug
  ApportVersion: 2.20.11-0ubuntu27.3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  jjuvan     2797 F.... pulseaudio
   /dev/snd/pcmC1D0p:   jjuvan     2797 F...m pulseaudio
   /dev/snd/controlC0:  jjuvan     2797 F.... pulseaudio
  CasperMD5CheckResult: skip
  CurrentDesktop: KDE
  DistroRelease: Ubuntu 20.04
  InstallationDate: Installed on 2018-11-05 (591 days ago)
  InstallationMedia: Ubuntu-Server 18.04.1 LTS "Bionic Beaver" - Release amd64 
(20180725)
  MachineType: LENOVO 20DF004USP
  Package: linux (not installed)
  ProcFB: 0 i915drmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-33-generic 
root=UUID=a8d80ba4-a0b8-4f71-9b3c-597f8c49f7f9 ro
  ProcVersionSignature: Ubuntu 5.4.0-33.37-generic 5.4.34
  RelatedPackageVersions:
   linux-restricted-modules-5.4.0-33-generic N/A
   linux-backports-modules-5.4.0-33-generic  N/A
   linux-firmware                            1.187
  Tags:  focal
  Uname: Linux 5.4.0-33-generic x86_64
  UpgradeStatus: Upgraded to focal on 2020-05-11 (38 days ago)
  UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 07/18/2016
  dmi.bios.vendor: LENOVO
  dmi.bios.version: J5ET54WW (1.25 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20DF004USP
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0E50510 WIN
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.modalias: 
dmi:bvnLENOVO:bvrJ5ET54WW(1.25):bd07/18/2016:svnLENOVO:pn20DF004USP:pvrThinkPadE550:rvnLENOVO:rn20DF004USP:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone:
  dmi.product.family: ThinkPad E550
  dmi.product.name: 20DF004USP
  dmi.product.sku: LENOVO_MT_20DF_BU_Think_FM_ThinkPad E550
  dmi.product.version: ThinkPad E550
  dmi.sys.vendor: LENOVO

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