I confirm on focal.
WORKAROUND, install linux-firmware package from Impish (1.201) instead of one
from focal (1.187)
The many kernel errors about PCI devices dissapear during the boot time. Not
sure about the real impact on the system itself.
sudo update-initramfs -u
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
I: The initramfs will attempt to resume from /dev/dm-2
I: (/dev/mapper/vgubuntu-swap_1)
I: Set the RESUME variable to override this.
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https://bugs.launchpad.net/bugs/1939986
Title:
Missing firmware files, in Ubuntu 20.04 LTS, for initramfs, when it
loads i915
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