[Bug 1940504] Re: Support Alder Lake P graphics

[Brian Murray]

Hello Timo, or anyone else affected,

Accepted linux-firmware into focal-proposed. The package will build now
and be available at https://launchpad.net/ubuntu/+source/linux-
firmware/1.187.17 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, what testing has been
performed on the package and change the tag from verification-needed-
focal to verification-done-focal. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-focal. In either case, without details of your testing we will
not be able to proceed.

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

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: linux-firmware (Ubuntu Focal)
       Status: In Progress => Fix Committed

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https://bugs.launchpad.net/bugs/1940504

Title:
  Support Alder Lake P graphics

Status in libdrm package in Ubuntu:
  Fix Released
Status in linux-firmware package in Ubuntu:
  Fix Released
Status in mesa package in Ubuntu:
  Fix Released
Status in libdrm source package in Focal:
  Fix Committed
Status in linux-firmware source package in Focal:
  Fix Committed
Status in linux-oem-5.14 source package in Focal:
  New
Status in mesa source package in Focal:
  Fix Committed

Bug description:
  [SRU Justification:linux-firmware]

  [Impact]

  It shows the firmware is missing, and runtime power management has been
  disabled:

    i915 0000:00:02.0: [drm] Failed to load DMC firmware
    i915/adlp_dmc_ver2_10.bin. Disabling runtime power management.

  [Fix]

  Upstream commit 3d32f216 ("i915: Add ADL-P DMC Support").

  [Test Case]

  Verified on Intel ADL-M/ADL-P RVPs.

  [Where problems could occur]

  It's a new firmware for new GPU, not possible to introduce
  regressions.

  [Other Info]

  Impish has this already. And while ADL-P/M support begins since v5.14,
  only focal (for oem-5.14) is being nominated.

  =========================================================

  [SRU Justification:mesa,libdrm]

  NOTE: this is for focal only, hirsute/impish do not and will not have
  kernel support for this.

  [Impact]

  ADL-P machines need to use the native driver.

  [Fix]

  Backport support from upstream.

  libdrm: a single patch from 2.4.107
  mesa: three commits to add pci-id's and a workaround
  kernel: needs drm sync from 5.14 (bug 1940085) plus additional backports

  [Test case]
  Boot a machine and check that it's using the native driver and that the usual workloads are fine.

  [Where things could go wrong]
  For older gpu's there's little to go wrong, since the commits are for ADL-P only.

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