Wiki.debian.org/firmware

kazmroz · April 2, 2018, 11:27pm

At boot usually get a list of error messages. Lately get “contact www://wiki.debian.org/firmware for update of missing firmware” What is that all about?

Vivien · May 9, 2018, 8:17pm

Hi

I have the same error message in system log :

[ 1.227556] i915 0000:00:02.0: firmware: failed to load i915/skl_dmc_ver1_27.bin (-2)
[ 1.227569] firmware_class: See https://wiki.debian.org/Firmware for information about missing firmware
[ 1.227580] i915 0000:00:02.0: Direct firmware load for i915/skl_dmc_ver1_27.bin failed with error -2
[ 1.227585] i915 0000:00:02.0: Failed to load DMC firmware i915/skl_dmc_ver1_27.bin. Disabling runtime power management.
[ 1.227589] i915 0000:00:02.0: DMC firmware homepage: https://01.org/linuxgraphics/downloads/firmware

this seems related to the will of Pureos maintainers to keep only free firmwares in Pureos.
I found more information here:
https://blogs.igalia.com/vjaquez/2017/12/07/enabling-huc-for-sklkbl-in-debiantesting/
and here:

gist.github.com

https://gist.github.com/Brainiarc7/aa43570f512906e882ad6cdd835efe57

skylake-tuning-linux.md

**Tuning Intel Skylake and beyond for optimal performance and feature level support on Linux:**

Note that on Skylake, Kabylake (and the now cancelled "Broxton") SKUs, functionality such as power saving, GPU scheduling and HDMI audio have been moved onto [binary-only firmware](https://01.org/linuxgraphics/downloads/firmware), and as such, the GuC and the HuC blobs must be loaded at run-time to access this functionality. 

Enabling GuC and HuC on Skylake and above requires a few extra parameters be passed to the kernel before boot. 

**Instructions provided for both Fedora and Ubuntu (including Debian):**


Note that the firmware for these GPUs is often packaged by your distributor, and as such, you can confirm the firmware blob's availability by running:

This file has been truncated. show original

I wonder if this problem is related to my issue with HDMI: I cannot get my HDMI second screen working (it works with a live USB linux distro…). I will continue to search for a solution.

ajlok · June 26, 2018, 11:51am

Having had the same messages on a newly bought librem 13 v3 i’ll fish it up to perhaps gain a little bit additional attention as the question hasn’t been solved.

bingen · April 9, 2019, 8:28am

According to this, they are just warnings:
https://tracker.pureos.net/T718