This bug was fixed in the package linux-oem-6.1 - 6.1.0-1022.22 --------------- linux-oem-6.1 (6.1.0-1022.22) jammy; urgency=medium
* jammy/linux-oem-6.1: 6.1.0-1022.22 -proposed tracker (LP: #2034205) * amdgpu: Fixes for S0i3 resume on Phoenix (LP: #2033654) - drm/amd/pm: skip the RLC stop when S0i3 suspend for SMU v13.0.4/11 - drm/amdgpu: skip fence GFX interrupts disable/enable for S0ix - drm/amd: flush any delayed gfxoff on suspend entry * CVE-2023-20588 - x86/bugs: Increase the x86 bugs vector size to two u32s - x86/CPU/AMD: Do not leak quotient data after a division by 0 - x86/CPU/AMD: Fix the DIV(0) initial fix attempt * CVE-2023-4569 - netfilter: nf_tables: deactivate catchall elements in next generation * stacked overlay file system mounts that have chroot() called against them appear to be getting locked (by the kernel most likely?) (LP: #2016398) - SAUCE: overlayfs: fix reference count mismatch * Fix blank display when Thunderbolt monitor is plugged second time (LP: #2034491) - thunderbolt: Fix Thunderbolt 3 display flickering issue on 2nd hot plug onwards - thunderbolt: Fix a backport error for display flickering issue * Enable D3cold at s2idle for Intel DG2 GPU (LP: #2033452) - drm/i915/dgfx: Enable d3cold at s2idle * Fix numerous AER related issues (LP: #2033025) - SAUCE: PCI/AER: Disable AER service during suspend, again - SAUCE: PCI/DPC: Disable DPC service during suspend, again * Fix ACPI TAD on some Intel based systems (LP: #2032767) - ACPI: TAD: Install SystemCMOS address space handler for ACPI000E * Fix panel brightness issues on HP laptops (LP: #2032704) - ACPI: video: Put ACPI video and its child devices into D0 on boot * Resync CI Runner Configuration (LP: #2024199) - [CI] resync ci configuration -- Timo Aaltonen <timo.aalto...@canonical.com> Wed, 06 Sep 2023 10:02:26 +0300 ** Changed in: linux-oem-6.1 (Ubuntu Jammy) Status: Fix Committed => Fix Released ** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2023-20588 ** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2023-4569 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem-6.1 in Ubuntu. https://bugs.launchpad.net/bugs/2032704 Title: Fix panel brightness issues on HP laptops Status in HWE Next: New Status in linux package in Ubuntu: Fix Released Status in linux-oem-6.1 package in Ubuntu: Invalid Status in linux-oem-6.5 package in Ubuntu: Invalid Status in linux source package in Jammy: Won't Fix Status in linux-oem-6.1 source package in Jammy: Fix Released Status in linux-oem-6.5 source package in Jammy: Fix Released Status in linux source package in Lunar: Fix Committed Status in linux-oem-6.1 source package in Lunar: Invalid Status in linux-oem-6.5 source package in Lunar: Invalid Status in linux source package in Mantic: Fix Released Status in linux-oem-6.1 source package in Mantic: Invalid Status in linux-oem-6.5 source package in Mantic: Invalid Bug description: [Impact] Brightness can't be changed or can only be changed once on some modern HP laptops. [Fix] BIOS folks identified the issue where the ACPI _PS0 method isn't called for the panel device. On Windows the method is being invoked. This is due to missing _PSC, but since Windows is the de facto spec, we have to perform the same to make the device functional. [Test] Once the fix is applied, the brightness can be changed smoothly. [Where problems could occur] According to BIOS folks, Windows also invokes _PS3 for sleep and shutdown, we need to tackle that in the future. Right now not calling _PS3 has no ill-effect, per BIOS folks. X-HWE-Bug: Bug #2032704 To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/2032704/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp