Possible Missing Firmware Lib Firmware I915 Skl_huc_2.0.0.bin For Module I915

[Elva Stuller]

YourMileage Might Vary, but I was getting these "missing firmware /lib/firmware/i915/...file" messages after an update. My system didn't even have a /lib/firmware/i915 directory. And all operations seemed normal.

Throwing caution to the winds and having a recent full backup,I decided I'd try creating bogus null filesthat the update-initramfs process was complaining about. I copied its error messages to a temporary file (e.g., mytempfile)and using one of my text editors (think vi, mcedit, sed, etc.)changed the lines from e.g.

These seem a little odd to me as my CPU is i7-6700HQ which is a skylake and my understanding is that these are for different CPUs? I followed the instructions here prior as in the past I had warnings regarding my CPU family.

Compare the error message you are receiving by update-initramfs or update-grub to find the missing driver. In your example the message was "/lib/firmware/i915/kbl_guc_ver9_14.bin" so you are missing the Kabylake GuC called: kbl_guc_ver9_14.bin in the web page shown above. You don't want the newer one: kbl_guc_ver9_39.bin

I've had two warning messages on missing i915 drivers for Kernel's 4.6.3, 4.7.1, 4.7.2, 4.7.3 and 4.7.5. I've ignored them and things have been fine with my HD4000 Intel Integrated Graphics. I wish the same thing could be said about Nvidia and Nouvaeu.

As one answer in your link stated you can go to Intel's website to get most up-to-date Linux Graphics drivers at: intel-linux-graphics-firmwares. However when I read that site a few weeks ago I was concerned with all the possible things that can go wrong under different scenarios so I opted out.

Did you install 4.8 release candidate 6 from September 24th? That's the most current in Ubuntu I believe. You don't have to answer but I'm curious why you went with 4.8 instead of 4.7.5, ie what the differences are you need to fix things.

Now using kernel version 4.8.1 (real version and not release candidate) for over a week and things are working nicely. This is under Ubuntu 16.04 though. Ubuntu 16.10 was released October 13th and it is using Kernel version 4.8.0 I believe.

Now running Kernel version 4.9.5 mainline version which at this time Ubuntu 16.04 has updated it's kernel to 4.4.0-59. Intel changed it's link for Intel Graphics for Linux drivers and I updated the new link above.

The program "hello" is a 504 byte assembler program that says "Hello World!". You can copy any small executable to the firmware binaries given in the error messages. When Intel eventually releases them the software updater will replace them with the real versions.

Look at your warnings using a terminal window (terminal, PuTTY, etc. or on the local machine) then for each one click the link in Intel's git page using a web browser (which brings up a hex dump of the file), copy the link location from the plain button above the dump, go back to the terminal and wget this link.

Throwing caution to the winds and having a recent full backup I decided I'd try creating bogus null files that the update-initramfs process was complaining about. I copied its error messages to a temporary file (e.g. mytempfile and using one of my text editors (think vi, mcedit, sed, etc.)changed the lines from e.g.W: Possible missing firmware /lib/firmware/i915/bxt_dmc_ver1_07.bin for module i915

This process will create a null zero-sized file for each of the missing .bin files. When/If an update is pushed which contains new updated .bin files, it will overwrite the null files we just created.

Maybe it's possible that firmware could be missing if it hasn't been added to linux-firmware yet, but at least on my machine at the moment (with an 11th gen Intel CPU), all of the firmware I need is in linux-firmware.

In case the issue still exists after this update, the way to fix it is by downloading the required .bin file from here and copying it as root to the /lib/firmware/i915 folder. Right after that, the 6.2.0-26 image needs to be regenerated by executing:

This will update the latest kernel image only, which in this case is the 6.2.0-26 image. There should be no errors or warnings after this but the system should be rebooted for the updated kernel to be loaded.

What the module actually is is a bit mysterious the commit adding it to the kernel just says "i915: Add HuC 7.10.3 for DG2". But, from discussion on intel-gfx this is basically all around a transition in the intel graphics driver firmware handling.

Look at my recent commit , these are the figures for N3350. So if You don't need display, but are using graphics for trans-coding multimedia, then set i915.disable_display=1 in kernel command line (it's needed there because i915 is built-in module). If no graphics IC is needed/used, disable it in UEFI. It's not much saved but worth.

Going back to missing firmware, apparently if i915 is built-in module and it's initialized without DMC firmware, it can't be provided later without reloading the driver. So You'll need to provide it as initrd in bootloader as cpio archive. In empty directory create this lib/firmware/i915 dir structure, put there the DMC firmware and pack it with find . cpio -o -H newc >../dmc.cpio. Transfer that firmware to boot dir of OpenWrt device and add to /boot/grub/grub.cfg as initrd /boot/dmc.cpio right below linux ... line. You can reboot and see that's properly loaded.

TBF on normally running system it didn't make any difference, with or without the firmware, and as I disconnected the display (I use serial console), can't be bothered to do any test when display is suspended or whole system is suspended.

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