Comment 12 for bug 1889137

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.