[SRU][OEM-5.10/H] UBUNTU: SAUCE: Fix backlight control on Samsung 16727 panel

Bug #1930527 reported by AaronMa
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Undecided
Unassigned
Hirsute
Undecided
Unassigned
linux-oem-5.10 (Ubuntu)
Undecided
Unassigned
Focal
Undecided
Unassigned

Bug Description

SRU justification:

[Impact]
Backlight can't be controlled on 5.11- version of kernel.

[Fix]
The panel needs DPCD to get control of backlight.
After 5.12 kernel introduced new Intel HDR backlight control, and it works well
on this panel.
Add quirk ID to enable DPCD on 5.11- kernel.

[Test]
Vendor Verified on hardware, with this quirk backlight can be changed on 5.10 and 5.11 kernel.

[Where problems could occur]
The panel backlight may not be changed.

CVE References

AaronMa (mapengyu)
no longer affects: linux (Ubuntu Focal)
no longer affects: linux-oem-5.10 (Ubuntu Hirsute)
Changed in hwe-next:
assignee: nobody → AaronMa (mapengyu)
AaronMa (mapengyu)
summary: - [SRU][OEM-5.10/H] Fix backlight control on Samsung 16727 panel
+ [SRU][OEM-5.10/H] UBUNTU: SAUCE: Fix backlight control on Samsung 16727
+ panel
Timo Aaltonen (tjaalton)
Changed in linux-oem-5.10 (Ubuntu Focal):
status: New → Fix Committed
Changed in linux-oem-5.10 (Ubuntu):
status: New → Invalid
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote :

This bug is awaiting verification that the 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!

tags: added: verification-needed-focal
Revision history for this message
AaronMa (mapengyu) wrote :

Verified by vendor, brighness can be changed on 5.10.0-1030-oem.

tags: added: verification-done-focal
removed: verification-needed-focal
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package linux-oem-5.10 - 5.10.0-1032.33

---------------
linux-oem-5.10 (5.10.0-1032.33) focal; urgency=medium

  * focal/linux-oem-5.10: 5.10.0-1032.33 -proposed tracker (LP: #1932138)

  * Mute/Mic mute LEDs and right speaker are not work on HP platforms
    (LP: #1932055)
    - ALSA: hda/realtek: fix mute/micmute LEDs and speaker for HP Elite Dragonfly
      G2
    - ALSA: hda/realtek: fix mute/micmute LEDs and speaker for HP EliteBook x360
      1040 G8
    - ALSA: hda/realtek: fix mute/micmute LEDs for HP EliteBook 840 Aero G8
    - ALSA: hda/realtek: fix mute/micmute LEDs for HP ZBook Power G8

 -- Timo Aaltonen <email address hidden> Wed, 16 Jun 2021 15:27:58 +0300

Changed in linux-oem-5.10 (Ubuntu Focal):
status: Fix Committed → Fix Released
Changed in linux (Ubuntu):
status: New → Invalid
Changed in linux (Ubuntu Hirsute):
status: New → In Progress
Changed in linux (Ubuntu Hirsute):
status: In Progress → Fix Committed
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote :

This bug is awaiting verification that the 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-hirsute' to 'verification-done-hirsute'. If the problem still exists, change the tag 'verification-needed-hirsute' to 'verification-failed-hirsute'.

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!

tags: added: verification-needed-hirsute
AaronMa (mapengyu)
tags: added: verification-done-hirsute
removed: verification-needed-hirsute
Revision history for this message
Launchpad Janitor (janitor) wrote :
Download full text (62.5 KiB)

This bug was fixed in the package linux - 5.11.0-34.36

---------------
linux (5.11.0-34.36) hirsute; urgency=medium

  * hirsute/linux: 5.11.0-34.36 -proposed tracker (LP: #1941766)

  * Server boot failure after adding checks for ACPI IRQ override (LP: #1941657)
    - Revert "ACPI: resources: Add checks for ACPI IRQ override"

linux (5.11.0-33.35) hirsute; urgency=medium

  * hirsute/linux: 5.11.0-33.35 -proposed tracker (LP: #1940101)

  * libvirtd fails to create VM (LP: #1940107)
    - sched: Stop PF_NO_SETAFFINITY from being inherited by various init system
      threads

linux (5.11.0-32.34) hirsute; urgency=medium

  * hirsute/linux: 5.11.0-32.34 -proposed tracker (LP: #1939769)

  * Packaging resync (LP: #1786013)
    - debian/dkms-versions -- update from kernel-versions (main/2021.08.16)

  * CVE-2021-3656
    - SAUCE: KVM: nSVM: always intercept VMLOAD/VMSAVE when nested

  * CVE-2021-3653
    - SAUCE: KVM: nSVM: avoid picking up unsupported bits from L2 in int_ctl

  * [regression] USB device is not detected during boot (LP: #1939638)
    - SAUCE: Revert "usb: core: reduce power-on-good delay time of root hub"

  * Support builtin revoked certificates (LP: #1932029)
    - [Packaging] build canonical-revoked-certs.pem from branch/arch certs
    - [Packaging] Revoke 2012 UEFI signing certificate as built-in
    - [Config] Configure CONFIG_SYSTEM_REVOCATION_KEYS with revoked keys

  * Support importing mokx keys into revocation list from the mok table
    (LP: #1928679)
    - SAUCE: integrity: add informational messages when revoking certs

  * Support importing mokx keys into revocation list from the mok table
    (LP: #1928679) // CVE-2020-26541 when certificates are revoked via
    MokListXRT.
    - SAUCE: integrity: Load mokx certs from the EFI MOK config table

  * Include product_sku info to modalias (LP: #1938143)
    - firmware/dmi: Include product_sku info to modalias

  * Fix Ethernet not working by hotplug - RTL8106E (LP: #1930645)
    - net: phy: rename PHY_IGNORE_INTERRUPT to PHY_MAC_INTERRUPT
    - SAUCE: r8169: Use PHY_POLL when RTL8106E enable ASPM

  * [SRU][H/OEM-5.10/OEM-5.13/U] Fix system hang after unplug tbt dock
    (LP: #1938689)
    - SAUCE: igc: fix page fault when thunderbolt is unplugged

  * [Regression] Audio card [8086:9d71] not detected after upgrade from linux
    5.4 to 5.8 (LP: #1915117)
    - [Config] set CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC to y

  * Backlight (screen brightness) on Lenovo P14s AMD Gen2 inop (LP: #1934557)
    - drm/amdgpu/display: only enable aux backlight control for OLED panels

  * Touchpad not working with ASUS TUF F15 (LP: #1937056)
    - pinctrl: tigerlake: Fix GPIO mapping for newer version of software

  * dev_forward_skb: do not scrub skb mark within the same name space
    (LP: #1935040)
    - dev_forward_skb: do not scrub skb mark within the same name space

  * Fix display output on HP hybrid GFX laptops (LP: #1936296)
    - drm/i915: Invoke another _DSM to enable MUX on HP Workstation laptops

  * [SRU][OEM-5.10/H] UBUNTU: SAUCE: Fix backlight control on Samsung 16727
    panel (LP: #1930527)
    - SAUCE: drm/i915: Force DPCD backlight mode for Samsung 16727 pa...

Changed in linux (Ubuntu Hirsute):
status: Fix Committed → Fix Released
no longer affects: hwe-next
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