Add i915/skl_guc_ver6.bin to linux-firmware in Trusty

[Justin King-Lacroix]

Linux-firmware is missing the following i915 firmware files, required by the i915 driver in 4.4.0-47-generic:

$ update-initramfs -k 4.4.0-47-generic -c
W: Possible missing firmware /lib/firmware/i915/kbl_dmc_ver1.bin for module i915_bpo
W: Possible missing firmware /lib/firmware/i915/skl_guc_ver6.bin for module i915_bpo

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Justin King-Lacroix (justinkl)]

Bump. Help?

[Brad Figg (brad-figg)]

Those are just warnings "W: Possible" that can be ignored.

[Justin King-Lacroix (justinkl)]

They shouldn't be warnings. Their result is that the firmware doesn't end up in the initramfs. The implications of this are discussed at length in LP #1496163.

[Philipp Kern (pkern)]

Adding Timo explicitly who said in https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1624164/comments/5 that kbl_dmc is optional and for power saving, but skl_guc_ver6 is actually needed on Skylake. Skylake devices are what we have and which don't properly work without the firmware.

[Timo Aaltonen (tjaalton)]

How does adding skl_guc help on your machines? I could've worded that comment a bit differently. Note that KBL is not supported on trusty.

[Seth Forshee (sforshee)]

These files are actually included in the latest linux-firmware for xenial (1.157.5), so I'm marking this fix released. Note however that the kbl_dmc firmware is actually causing regressions on some kabylake systems, so I'm probably going to have to remove it temporarily until those are resolved.

[Justin King-Lacroix (justinkl)]

The problem is that this hasn't yet been backported to Trusty, which is what we care about. It's therefore not "fix released" for Trusty...

[Justin King-Lacroix (justinkl)]

(This is for Skylake laptops, so agreed that the KBL warnings aren't relevant.)

[Seth Forshee (sforshee)]

Ah, sorry, I saw 4.4 and assumed xenial. You're right that we haven't added those files in trusty. That should be no problem.

[Justin King-Lacroix (justinkl)]

Many thanks!

[Justin King-Lacroix (justinkl)]

Any idea when this will be released?

[Seth Forshee (sforshee)]

I don't know when it will be released, but it is unusual that the package hasn't yet hit trust-proposed. I'll see if I can get someone to take care of that.

[Adam Conrad (adconrad)]

Hello Justin, or anyone else affected,

Accepted linux-firmware into trusty-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/linux-firmware/1.127.23 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed.Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

[Justin King-Lacroix (justinkl)]

I can confirm that this contains the appropriate firmware file.

[Justin King-Lacroix (justinkl)]

s/appropriate/requested/

[Justin King-Lacroix (justinkl)]

Hi guys, any idea when this will be released?

[Chris Halse Rogers (raof)]

The verification of the Stable Release Update for linux-firmware has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-firmware - 1.127.23

---------------
linux-firmware (1.127.23) trusty; urgency=medium

  * Trigger update-initramfs following linux-firmware install (LP: #1646197)
    - UBUNTU: Add postinst script to update initrds

  * Add i915/skl_guc_ver6.bin to linux-firmware in Trusty (LP: #1642709)
    - linux-firmware/i915: Major GuC release for Skylake - ver 6.1

 -- Seth Forshee <email address hidden> Thu, 01 Dec 2016 15:36:41 -0600