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Tags: 18.04   intel-graphics  
Link: πŸ” See Original Answer on Ask Ubuntu πŸ”—

URL: https://askubuntu.com/q/1044310
Title: Which intel graphics firmware version is in use & how to change that
ID: /2018/06/06/Which-intel-graphics-firmware-version-is-in-use-_-how-to-change-that
Created: June 6, 2018    Edited:  June 7, 2018
Upload: November 24, 2022    Layout:  post
TOC: false    Navigation:  false    Copy to clipboard:  false


Short Answer

To change the drivers in use you need to change your kernel version. However you shouldn’t do this unless there are specific reasons to do so.

Long Answer

The install.sh scripts have been deprecated and are no longer used. Now there are blobs (Binary Large Objects) that simply need to be downloaded and then copied to /lib/firmware/i915. If you follow the link you posted you will see it has been changed from the last time you downloaded.

For instructions on installing the new blobs see: Possible missing firmware /lib/firmware/i915

As far as quickly seeing which i915 drivers for Skylake you have installed (but not necessarily active for current boot) use:

$ locate i915/skl_
/lib/firmware/i915/skl_dmc_ver1.bin
/lib/firmware/i915/skl_dmc_ver1_23.bin
/lib/firmware/i915/skl_dmc_ver1_26.bin
/lib/firmware/i915/skl_guc_ver1.bin
/lib/firmware/i915/skl_guc_ver1_1059.bin
/lib/firmware/i915/skl_guc_ver4.bin
/lib/firmware/i915/skl_guc_ver4_3.bin
/lib/firmware/i915/skl_guc_ver6.bin
/lib/firmware/i915/skl_guc_ver6_1.bin
/lib/firmware/i915/skl_guc_ver9_33.bin
/lib/firmware/i915/skl_huc_ver01_07_1398.bin

I noticed in your link a new version skl_dmc_ver1_27.bin so I downloaded it and then ran:

$ sudo updatedb
[sudo] password for rick:          
───────────────────────────────────────────────────────────────────────────────────────────
rick@alien:~$ locate dmc_ver1_27
/home/rick/Downloads/skl_dmc_ver1_27.bin
───────────────────────────────────────────────────────────────────────────────────────────
rick@alien:~$ sudo mv /lib/firmware/i915/skl_dmc_ver1_26.bin /lib/firmware/i915/skl_dmc_ver1_26.bin.old
───────────────────────────────────────────────────────────────────────────────────────────
rick@alien:~$ sudo mv /home/rick/Downloads/skl_dmc_ver1_27.bin /lib/firmware/i915/skl_dmc_ver1_27.bin
───────────────────────────────────────────────────────────────────────────────────────────
rick@alien:~$ sudo update-initramfs -u -k `uname -r`
update-initramfs: Generating /boot/initrd.img-4.14.42-041442-generic
W: Possible missing firmware /lib/firmware/i915/skl_dmc_ver1_26.bin for module i915
Adding /lib/firmware/i915/skl_guc_ver9_33.bin

So even though skl_dmc_ver1_27.bin is available it doesn’t work with the Kernel 4.14 chain and it still looks for skl_dmc_ver1_26.bin. Ubuntu 18.04 uses the 4.15 kernel chain so apparently it is using skl_dmc_ver1_26.bin as well.


I just downloaded Kernel 4.17 which came out two days ago and it uses the new skl_dmc_ver1_27.bin driver:

$ sudo mv /lib/firmware/i915/skl_dmc_ver1_27.bin /lib/firmware/i915/skl_dmc_ver1_27.bin.old
$ sudo update-initramfs -u -k 4.17.0-041700-generic
update-initramfs: Generating /boot/initrd.img-4.17.0-041700-generic
W: Possible missing firmware /lib/firmware/i915/skl_dmc_ver1_27.bin for module i915
W: Possible missing firmware /lib/firmware/i915/kbl_dmc_ver1_04.bin for module i915
W: Possible missing firmware /lib/firmware/i915/cnl_dmc_ver1_07.bin for module i915
W: Possible missing firmware /lib/firmware/i915/kbl_guc_ver9_39.bin for module i915
W: Possible missing firmware /lib/firmware/i915/bxt_guc_ver9_29.bin for module i915
Adding /lib/firmware/i915/skl_guc_ver9_33.bin

Notice how it’s looking for /lib/firmware/i915/skl_dmc_ver1_27.bin


Summary

You also asked: β€œWhat about guc and huc?” guc is answered immediately above. As far as huc is concerned the same version is used from Kernel 4.14 (and earlier) to Kernel 4.17:

rick@alien:~/Downloads$ sudo mv /lib/firmware/i915/skl_huc_ver01_07_1398.bin /lib/firmware/i915/skl_huc_ver01_07_1398.bin.old
───────────────────────────────────────────────────────────────────────────────────────────
rick@alien:~/Downloads$ sudo update-initramfs -u -k `uname -r`
update-initramfs: Generating /boot/initrd.img-4.14.42-041442-generic
W: Possible missing firmware /lib/firmware/i915/skl_dmc_ver1_26.bin for module i915
W: Possible missing firmware /lib/firmware/i915/skl_huc_ver01_07_1398.bin for module i915
Adding /lib/firmware/i915/skl_guc_ver9_33.bin
⇧ gedit "Manage External Tools" menu option doesn't appear Ubuntu 18.04 use top panel for program like in old version  β‡©