I started seeing the issues that Sergio mentioned lately as well. I
think this was caused by the recent automatic move from 5.8 to 5.11. I
had the oem kernel installed (20.04 install) but then apt recently moved
me to the hwe-5.8 kernel. More recently apt pulled in hwe-5.11 and I
believe that is when I started seeing this issue.

I didn't look at this super carefully, but it appears that some
packaging for the lenovo oem-sutton.newell-ace-meta ppa transitioned me
to linux-image-generic-hwe-20.04 (fine) which at the time was 5.8 (on
Jul 22 linux-generic-hwe-20.04:amd64 5.8.0.63.71~20.04.45 got installed,
according to /var/log/dpkg.log.1). I rebooted into this kernel and was
happy.

Sometime in July, 5.11.0.22.23~20.04.6 came into -security and -updates,
but I didn't install it. Later I performed an apt-get dist-upgrade and
was upgraded to 5.11.0.25.27~20.04.10 on Aug 6. Today I upgraded again
to 5.11.0-27.29~20.04.1. As it happens, I did not boot into either of
the 5.11 kernels and am still on 5.8 (5.8.0-63.71~20.04.1-generic).

I reinstalled linux-firmware just now and it readily demonstrates the
issue:

$ sudo dpkg -i ./linux-firmware_1.187.16_all.deb 
(Reading database ... 260812 files and directories currently installed.)
Preparing to unpack .../linux-firmware_1.187.16_all.deb ...
Unpacking linux-firmware (1.187.16) over (1.187.16) ...
Setting up linux-firmware (1.187.16) ...
update-initramfs: Generating /boot/initrd.img-5.11.0-27-generic
W: Possible missing firmware /lib/firmware/i915/skl_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/bxt_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/kbl_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/glk_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/kbl_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/kbl_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/cml_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/icl_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/ehl_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/ehl_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/tgl_huc_7.5.0.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/tgl_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/tgl_huc_7.5.0.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/tgl_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/dg1_dmc_ver2_02.bin for module 
i915
update-initramfs: Generating /boot/initrd.img-5.11.0-25-generic
W: Possible missing firmware /lib/firmware/i915/skl_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/bxt_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/kbl_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/glk_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/kbl_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/kbl_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/cml_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/icl_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/ehl_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/ehl_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/tgl_huc_7.5.0.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/tgl_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/tgl_huc_7.5.0.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/tgl_guc_49.0.1.bin for module 
i915
W: Possible missing firmware /lib/firmware/i915/dg1_dmc_ver2_02.bin for module 
i915
update-initramfs: Generating /boot/initrd.img-5.8.0-63-generic
$

>From the above, we can see that the 5.8 kernel had no errors, but both
the 5.11 ones do.

As I have the i915 chipset on this device, I haven't rebooted yet as I
need a functional system.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-firmware in Ubuntu.
https://bugs.launchpad.net/bugs/1889137

Title:
  HWE kernel is missing firmwares

Status in linux-firmware package in Ubuntu:
  Confirmed

Bug description:
  After install linux-generic-hwe-18.04:

  update-initramfs: Generating /boot/initrd.img-5.4.0-42-generic
  W: Possible missing firmware /lib/firmware/rtl_nic/rtl8125a-3.fw for module 
r8169
  W: Possible missing firmware /lib/firmware/i915/tgl_dmc_ver2_04.bin for 
module i915
  W: Possible missing firmware /lib/firmware/i915/skl_guc_33.0.0.bin for module 
i915
  W: Possible missing firmware /lib/firmware/i915/bxt_guc_33.0.0.bin for module 
i915
  W: Possible missing firmware /lib/firmware/i915/kbl_guc_33.0.0.bin for module 
i915
  W: Possible missing firmware /lib/firmware/i915/glk_guc_33.0.0.bin for module 
i915
  W: Possible missing firmware /lib/firmware/i915/kbl_guc_33.0.0.bin for module 
i915
  W: Possible missing firmware /lib/firmware/i915/icl_guc_33.0.0.bin for module 
i915
  cd /lib/firmware/rtl_nicroot@h2:~# cd /lib/firmware/rtl_nic

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: linux-generic-hwe-18.04 (not installed)
  ProcVersionSignature: Ubuntu 5.4.0-7634.38~1595345317~20.04~a8480ad-generic 
5.4.41
  Uname: Linux 5.4.0-7634-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair nvidia_modeset 
nvidia
  ApportVersion: 2.20.11-0ubuntu27.4
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: GNOME
  Date: Tue Jul 28 10:43:18 2020
  HibernationDevice:
   #RESUME=UUID=9926e754-5beb-4353-ab1b-8e22f798efc6
   RESUME=UUID=aa434b5f-9af6-4b25-986e-216eb0e20a2e
  InstallationDate: Installed on 2018-06-28 (760 days ago)
  InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  MachineType: ASUSTeK COMPUTER INC. N551JK
  ProcFB: 0 i915drmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-7634-generic 
root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-5.4.0-7634-generic N/A
   linux-backports-modules-5.4.0-7634-generic  N/A
   linux-firmware                              1.187.2
  SourcePackage: linux
  UpgradeStatus: Upgraded to focal on 2020-05-30 (58 days ago)
  dmi.bios.date: 10/06/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: N551JK.203
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: N551JK
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK COMPUTER INC.
  dmi.chassis.version: 1.0
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrN551JK.203:bd10/06/2014:svnASUSTeKCOMPUTERINC.:pnN551JK:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnN551JK:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.family: N
  dmi.product.name: N551JK
  dmi.product.sku: ASUS-NotebookSKU
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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