This bug was fixed in the package linux-firmware - 1.187.17
---------------
linux-firmware (1.187.17) focal; urgency=medium
* Support Alder Lake P graphics (LP: #1940504)
- i915: Add ADL-P DMC Support
-- Timo Aaltonen <timo.aalto...@canonical.com> Wed, 08 Sep 2021
10:01:19 +0300
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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 Released
Status in linux-firmware source package in Focal:
Fix Released
Status in linux-oem-5.14 source package in Focal:
Fix Committed
Status in mesa source package in Focal:
Fix Released
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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