Various backlight issues with the 6.0/6.1 kernel

Bug #2023638 reported by AceLan Kao
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
HWE Next
New
Undecided
Unassigned
linux (Ubuntu)
In Progress
Medium
AceLan Kao
Jammy
Invalid
Undecided
AceLan Kao
Kinetic
Invalid
Undecided
AceLan Kao
Lunar
Won't Fix
Medium
AceLan Kao
Mantic
Won't Fix
Medium
AceLan Kao
linux-oem-6.0 (Ubuntu)
Invalid
Undecided
Unassigned
Jammy
Fix Released
Undecided
AceLan Kao
Kinetic
Invalid
Undecided
Unassigned
Lunar
Invalid
Undecided
Unassigned
Mantic
Invalid
Undecided
Unassigned
linux-oem-6.1 (Ubuntu)
Invalid
Undecided
Unassigned
Jammy
Fix Released
Undecided
AceLan Kao
Kinetic
Invalid
Undecided
Unassigned
Lunar
Invalid
Undecided
Unassigned
Mantic
Invalid
Undecided
Unassigned

Bug Description

[Impact]
There are some new patches for new method to decide which backlight driver should be registered introduced since 6.1. And we backport some of them to 6.0-oem kernel which are not enough to solved all backlight issues.
1. dell_laptop created a non-working backlight driver before nvidia is loaded, that leads to the system can't adjust the display brightness.
2. acpi_backlight0 sometimes will be generated together with intel_backlight.

[Fix]
Below 2 commits from v6.3-rc6 prevent the acpi_backlight from being registered automatically(which have been included into ubuntu kernels through stable update)
e506731c8f35 ACPI: video: Make acpi_backlight=video work independent from GPU driver
78dfc9d1d1ab ACPI: video: Add auto_detect arg to __acpi_video_get_backlight_type()

Below patch prevents platform driver(dell_laptop) from creating backlight driver after win8.
aa8a950a5d6b ACPI: video: Stop trying to use vendor backlight control on laptops from after ~2012
https://patchwork.kernel<email address hidden>/

[Test]
Verified on the dell platform which reports this issue.

[Where problems could occur]
The assumption of the not-yet-upstreamed commit regarding backlight control is that, after Windows 8, all laptop backlights are controlled either by ACPI or the native graphics driver. It impacts the laptops that do not follow the assumption and will lead to broken backlight interface.

AceLan Kao (acelankao)
Changed in linux (Ubuntu Jammy):
assignee: nobody → AceLan Kao (acelankao)
status: New → In Progress
Changed in linux (Ubuntu Kinetic):
assignee: nobody → AceLan Kao (acelankao)
status: New → In Progress
Changed in linux (Ubuntu Lunar):
assignee: nobody → AceLan Kao (acelankao)
status: New → In Progress
Changed in linux (Ubuntu Mantic):
assignee: nobody → AceLan Kao (acelankao)
status: New → In Progress
Changed in linux-oem-6.0 (Ubuntu Jammy):
assignee: nobody → AceLan Kao (acelankao)
status: New → In Progress
Changed in linux-oem-6.1 (Ubuntu Jammy):
assignee: nobody → AceLan Kao (acelankao)
status: New → In Progress
Changed in linux-oem-6.0 (Ubuntu Kinetic):
status: New → Invalid
Changed in linux-oem-6.0 (Ubuntu Lunar):
status: New → Invalid
Changed in linux-oem-6.0 (Ubuntu Mantic):
status: New → Invalid
Changed in linux-oem-6.1 (Ubuntu Kinetic):
status: New → Invalid
Changed in linux-oem-6.1 (Ubuntu Lunar):
status: New → Invalid
Changed in linux-oem-6.1 (Ubuntu Mantic):
status: New → Invalid
AceLan Kao (acelankao)
tags: added: civet-cat oem-priority originate-from-2012887
AceLan Kao (acelankao)
description: updated
AceLan Kao (acelankao)
summary: - Stop trying to use vendor backlight control on laptops
+ Various backlight issues with the 6.0 kernel
Changed in linux (Ubuntu Jammy):
status: In Progress → Invalid
Changed in linux (Ubuntu Kinetic):
status: In Progress → Invalid
AceLan Kao (acelankao)
description: updated
description: updated
Timo Aaltonen (tjaalton)
Changed in linux-oem-6.0 (Ubuntu Jammy):
status: In Progress → Fix Committed
Timo Aaltonen (tjaalton)
summary: - Various backlight issues with the 6.0 kernel
+ Various backlight issues with the 6.0/6.1 kernel
AceLan Kao (acelankao)
description: updated
Stefan Bader (smb)
Changed in linux (Ubuntu Mantic):
importance: Undecided → Medium
Changed in linux (Ubuntu Lunar):
importance: Undecided → Medium
AceLan Kao (acelankao)
tags: added: verification-done-jammy
You-Sheng Yang (vicamo)
Changed in linux-oem-6.1 (Ubuntu Jammy):
status: In Progress → Fix Committed
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package linux-oem-6.0 - 6.0.0-1019.19

---------------
linux-oem-6.0 (6.0.0-1019.19) jammy; urgency=medium

  * jammy/linux-oem-6.0: 6.0.0-1019.19 -proposed tracker (LP: #2024151)

  * CVE-2023-2430
    - io_uring: get rid of double locking
    - io_uring: extract a io_msg_install_complete helper
    - io_uring/msg_ring: move double lock/unlock helpers higher up
    - io_uring/msg_ring: fix missing lock on overflow for IOPOLL

  * Various backlight issues with the 6.0 kernel (LP: #2023638)
    - ACPI: video: Add auto_detect arg to __acpi_video_get_backlight_type()
    - ACPI: video: Make acpi_backlight=video work independent from GPU driver
    - SAUCE: ACPI: video: Stop trying to use vendor backlight control on laptops
      from after ~2012

  * CVE-2022-4842
    - fs/ntfs3: Fix attr_punch_hole() null pointer derenference

  * CVE-2023-2124
    - xfs: verify buffer contents when we skip log replay

  * CVE-2023-0597
    - x86/kasan: Map shadow for percpu pages on demand
    - x86/mm: Randomize per-cpu entry area
    - x86/mm: Recompute physical address for every page of per-CPU CEA mapping
    - x86/mm: Populate KASAN shadow for entire per-CPU range of CPU entry area
    - x86/mm: Do not shuffle CPU entry areas without KASLR

  * cls_flower: off-by-one in fl_set_geneve_opt (LP: #2023577)
    - net/sched: flower: fix possible OOB write in fl_set_geneve_opt()

  * Some INVLPG implementations can leave Global translations unflushed when
    PCIDs are enabled (LP: #2023220)
    - x86/mm: Avoid incomplete Global INVLPG flushes

  * CVE-2023-2176
    - RDMA/core: Refactor rdma_bind_addr

  * Fix Monitor lost after replug WD19TBS to SUT port with VGA/DVI to type-C
    dongle (LP: #2021949)
    - thunderbolt: Increase timeout of DP OUT adapter handshake
    - thunderbolt: Do not touch CL state configuration during discovery
    - thunderbolt: Increase DisplayPort Connection Manager handshake timeout

  * CVE-2023-1073
    - HID: check empty report_list in hid_validate_values()

  * CVE-2023-0459
    - uaccess: Add speculation barrier to copy_from_user()

  * selftest: fib_tests: Always cleanup before exit (LP: #2015956)
    - selftest: fib_tests: Always cleanup before exit

 -- Timo Aaltonen <email address hidden> Tue, 20 Jun 2023 12:57:07 +0300

Changed in linux-oem-6.0 (Ubuntu Jammy):
status: Fix Committed → Fix Released
Revision history for this message
You-Sheng Yang (vicamo) wrote :

This bug is awaiting verification that the linux-oem-6.1/6.1.0-1017.17 kernel in https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/proposed2 solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy' to 'verification-done-jammy'. If the problem still exists, change the tag 'verification-needed-jammy' to 'verification-failed-jammy'.

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 verification-needed-jammy
removed: verification-done-jammy
AceLan Kao (acelankao)
tags: added: verification-done-jammy
removed: verification-needed-jammy
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package linux-oem-6.1 - 6.1.0-1017.17

---------------
linux-oem-6.1 (6.1.0-1017.17) jammy; urgency=medium

  * jammy/linux-oem-6.1: 6.1.0-1017.17 -proposed tracker (LP: #2026459)

  * Packaging resync (LP: #1786013)
    - [Packaging] resync update-dkms-versions helper

  * CVE-2023-3269
    - exec: Remove FOLL_FORCE for stack setup
    - mm: introduce new 'lock_mm_and_find_vma()' page fault helper
    - mm: make the page fault mmap locking killable
    - arm64/mm: Convert to using lock_mm_and_find_vma()
    - powerpc/mm: Convert to using lock_mm_and_find_vma()
    - mips/mm: Convert to using lock_mm_and_find_vma()
    - riscv/mm: Convert to using lock_mm_and_find_vma()
    - arm/mm: Convert to using lock_mm_and_find_vma()
    - mm/fault: convert remaining simple cases to lock_mm_and_find_vma()
    - powerpc/mm: convert coprocessor fault to lock_mm_and_find_vma()
    - mm: make find_extend_vma() fail if write lock not held
    - execve: expand new process stack manually ahead of time
    - mm: always expand the stack with the mmap write lock held
    - [CONFIG]: Set CONFIG_LOCK_MM_AND_FIND_VMA

  * CVE-2023-3389
    - io_uring/poll: serialize poll linked timer start with poll removal

  * amd_pmf: AMD 7840HS cpufreq locked at 400-544MHz after power unplugged
    (LP: #2025670)
    - platform/x86/amd/pmf: Register notify handler only if SPS is enabled

  * Mute/mic LEDs no function on some HP Platforms (LP: #2025444)
    - ALSA: hda/realtek: Enable mute/micmute LEDs and limit mic boost on EliteBook

  * Various backlight issues with the 6.0/6.1 kernel (LP: #2023638)
    - ACPI: video: Stop trying to use vendor backlight control on laptops from
      after ~2012

  * HDMI output with More than one child device for port B in VBT error
    (LP: #2025195)
    - SAUCE: drm/i915/quirks: Add multiple VBT quirk for HP ZBook Power G10

 -- You-Sheng Yang <email address hidden> Wed, 12 Jul 2023 11:26:03 +0800

Changed in linux-oem-6.1 (Ubuntu Jammy):
status: Fix Committed → Fix Released
Stefan Bader (smb)
Changed in linux (Ubuntu Lunar):
status: In Progress → Fix Committed
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote :

This bug is awaiting verification that the linux/6.2.0-30.30 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-lunar-linux' to 'verification-done-lunar-linux'. If the problem still exists, change the tag 'verification-needed-lunar-linux' to 'verification-failed-lunar-linux'.

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: kernel-spammed-lunar-linux-v2 verification-needed-lunar-linux
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote :

This bug is awaiting verification that the linux-nvidia-6.2/6.2.0-1010.10 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-jammy-linux-nvidia-6.2' to 'verification-done-jammy-linux-nvidia-6.2'. If the problem still exists, change the tag 'verification-needed-jammy-linux-nvidia-6.2' to 'verification-failed-jammy-linux-nvidia-6.2'.

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: kernel-spammed-jammy-linux-nvidia-6.2-v2 verification-needed-jammy-linux-nvidia-6.2
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote :

This bug is awaiting verification that the linux-starfive/6.2.0-1004.5 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-lunar-linux-starfive' to 'verification-done-lunar-linux-starfive'. If the problem still exists, change the tag 'verification-needed-lunar-linux-starfive' to 'verification-failed-lunar-linux-starfive'.

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: kernel-spammed-lunar-linux-starfive-v2 verification-needed-lunar-linux-starfive
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote :

This bug is awaiting verification that the linux-aws-6.2/6.2.0-1013.13~22.04.1 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-jammy-linux-aws-6.2' to 'verification-done-jammy-linux-aws-6.2'. If the problem still exists, change the tag 'verification-needed-jammy-linux-aws-6.2' to 'verification-failed-jammy-linux-aws-6.2'.

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: kernel-spammed-jammy-linux-aws-6.2-v2 verification-needed-jammy-linux-aws-6.2
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote :

This bug is awaiting verification that the linux-azure/6.2.0-1013.13 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-lunar-linux-azure' to 'verification-done-lunar-linux-azure'. If the problem still exists, change the tag 'verification-needed-lunar-linux-azure' to 'verification-failed-lunar-linux-azure'.

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: kernel-spammed-lunar-linux-azure-v2 verification-needed-lunar-linux-azure
Revision history for this message
Brian Murray (brian-murray) wrote :

Ubuntu 23.04 (Lunar Lobster) has reached end of life, so this bug will not be fixed for that specific release.

Changed in linux (Ubuntu Lunar):
status: Fix Committed → Won't Fix
Revision history for this message
Brian Murray (brian-murray) wrote :

Ubuntu 23.10 (Mantic Minotaur) has reached end of life, so this bug will not be fixed for that specific release.

Changed in linux (Ubuntu Mantic):
status: In Progress → Won't Fix
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