Add support for NVIDIA EC backlight

This bug is awaiting verification that the linux-oem-5.14/5.14.0-1011.11 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

Test on specific DDS panel machine with 5.14.0-1011.11, brightness can be adjusted.

This bug was fixed in the package linux-oem-5.14 - 5.14.0-1011.11

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linux-oem-5.14 (5.14.0-1011.11) focal; urgency=medium

  * focal/linux-oem-5.14: 5.14.0-1011.11 -proposed tracker
    (LP: #1954691)

  * Packaging resync (LP: #1786013)
    - debian/dkms-versions -- update from kernel-versions (main/2021.11.08)

  * s2idle suspend failure: amd_pmc AMDI0005:00: SMU response timed out
    (LP: #1954633)
    - platform/x86: amd-pmc: Fix s2idle failures on certain AMD laptops

  * Fix power button wakeup with shared IRQs on AMD platforms (LP: #1953540)
    - ACPI: Add stubs for wakeup handler functions
    - pinctrl: amd: Fix wakeups when IRQ is shared with SCI

  * alsa/hda: the microphone can't be detected on a couple of lenovo machines
    (LP: #1954612)
    - ALSA: hda/realtek - Add headset Mic support for Lenovo ALC897 platform

  * mt7921e: Failed to start WM firmware (LP: #1954300)
    - SAUCE: Bluetooth: btusb: Handle download_firmware failure cases
    - SAUCE: Bluetooth: btusb: Return error code when getting patch status failed

  * Fix cpufreq: cpufreq_online: Failed to initialize policy for cpu: 0 (-19)
    (LP: #1954617)
    - ACPI: CPPC: Introduce cppc_get_nominal_perf()
    - ACPI: CPPC: Add NULL pointer check to cppc_get_perf()
    - cpufreq: intel_pstate: hybrid: Rework HWP calibration

  * Add support for NVIDIA EC backlight (LP: #1953286)
    - platform/x86: Add driver for ACPI WMAA EC-based backlight control
    - platform/x86: Remove "WMAA" from identifier names in wmaa-backlight-wmi.c
    - platform/x86: Rename wmaa-backlight-wmi to nvidia-wmi-ec-backlight
    - [Config] NVIDIA_WMI_EC_BACKLIGHT=m

  * Let VMD follow host bridge PCIe settings (LP: #1954611)
    - SAUCE: PCI: vmd: Honor ACPI _OSC on PCIe features

 -- Timo Aaltonen <email address hidden> Mon, 13 Dec 2021 19:41:56 +0200

This bug was fixed in the package linux - 5.15.0-17.17

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linux (5.15.0-17.17) jammy; urgency=medium

  * jammy/linux: 5.15.0-17.17 -proposed tracker (LP: #1957809)

 -- Andrea Righi <email address hidden> Thu, 13 Jan 2022 17:11:21 +0100