$ dmesg
....
[    4.950114] i915 0000:00:02.0: firmware: failed to load i915/skl_dmc_ver1_27.bin (-2)\\
[    4.950118] firmware_class: See https://wiki.debian.org/Firmware for information about missing firmware
....

$ sudo apt install firmware-misc-nonfree

$ dmesg
....
[    0.032301] [Firmware Bug]: TSC_DEADLINE disabled due to Errata; please update microcode to version: 0xb2 (or later)
....

$ sudo apt install intel-microcode

Если память не ECC, то будет такие варнинги, нужно заблокировать модуль amd64_edac_mod.

$ dmesg
....
[    6.516505] EDAC amd64: Node 0: DRAM ECC disabled.
[    6.516507] EDAC amd64: ECC disabled in the BIOS or no ECC capability, module will not load.
                Either enable ECC checking or force module loading by setting 'ecc_enable_override'.
                (Note that use of the override may cause unknown side effects.)
....

$ echo «blacklist amd64_edac_mod» » /etc/modprobe.d/blacklist.conf