dmesg | grep -i firmware

[    0.000000] [Firmware Bug]: TSC ADJUST: CPU0: -122554584 force to 0
[    0.004949] [Firmware Bug]: TSC ADJUST differs within socket(s), fixing all errors
[    0.437060] Loading firmware: i915/glk_dmc_ver1_04.bin
[    0.437080] i915 0000:00:02.0: Direct firmware load for i915/glk_dmc_ver1_04.bin failed with error -2
[    0.437088] i915 0000:00:02.0: [drm] Failed to load DMC firmware i915/glk_dmc_ver1_04.bin. Disabling runtime power management.
[    0.437092] i915 0000:00:02.0: [drm] DMC firmware homepage: https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/i915
[    0.859675] Loading firmware: regulatory.db
[    0.863423] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[    1.770285] Loading firmware: rtl_nic/rtl8153a-3.fw