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4b506ea535
linux/drivers/acpi
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Shivam Kalra 4b506ea535 ACPI: video: force native backlight on HP OMEN 16 (8A44) 
The HP OMEN 16 Gaming Laptop (board name 8A44) has a mux-less hybrid
GPU configuration with AMD Rembrandt (Radeon 680M) and NVIDIA GA104
(RTX 3070 Ti). The internal eDP panel is wired to the AMD iGPU.

When Nouveau loads without GSP firmware, the ACPI video backlight
device (acpi_video0) gets registered alongside the native AMD
backlight (amdgpu_bl2). In this state, writes to amdgpu_bl2 update
the software brightness value but fail to change the physical panel
brightness.

Force native backlight to prevent acpi_video0 from registering.
Confirmed that booting with acpi_backlight=native resolves the
issue.

Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Shivam Kalra <shivamkalra98@zohomail.in>
Link: https://patch.msgid.link/20260426-omen-16-backlight-fix-v1-1-62364f268ea6@zohomail.in
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2026-04-27 22:00:00 +02:00
..
acpica ACPICA: Replace strncpy() with strscpy_pad() in acpi_ut_safe_strncpy() 2026-03-23 18:32:34 +01:00
apei ACPI: APEI: GHES: Add NVIDIA vendor CPER record handler 2026-04-06 16:48:58 +02:00
arm64 ACPI: AGDI: fix missing newline in error message 2026-04-08 17:45:06 +01:00
dptf Thermal control updates for 6.19-rc1 2025-12-02 17:49:12 -08:00
nfit Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
numa ACPI: NUMA: Only parse CFMWS at boot when CXL_ACPI is on 2026-03-16 10:11:25 -07:00
pmic ACPI: PMIC: Remove unneeded check in tps68470_pmic_opregion_probe() 2024-08-02 17:05:08 +02:00
riscv RISC-V: ACPI: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval 2026-04-06 16:55:15 +02:00
x86 ACPI: TAD/x86: cmos_rtc: Consolidate address space handler setup 2026-02-26 18:50:10 +01:00
ac.c ACPI: AC: Define ACPI_AC_CLASS in one place 2026-03-13 16:48:28 +01:00
acpi_adxl.c
acpi_apd.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
acpi_configfs.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
acpi_dbg.c ACPI: debug: fix signedness issues in read/write helpers 2025-09-23 15:45:28 +02:00
acpi_extlog.c ACPI: extlog: Trace CPER CXL Protocol Error Section 2026-01-14 17:09:34 +01:00
acpi_ffh.c ACPI: FFH: Drop the inclusion of linux/arm-smccc.h 2023-06-12 19:28:20 +02:00
acpi_fpdt.c ACPI: FPDT: expose FBPT and S3PT subtables via sysfs 2026-03-26 15:59:52 +01:00
acpi_ipmi.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
acpi_lpat.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
acpi_lpit.c x86/msr: Rename 'rdmsrl_safe()' to 'rdmsrq_safe()' 2025-04-10 11:58:38 +02:00
acpi_memhotplug.c ACPI: driver: Do not set acpi_device_class() unnecessarily 2026-03-13 16:48:26 +01:00
acpi_mrrm.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
acpi_pad.c ACPI: driver: Do not set acpi_device_class() unnecessarily 2026-03-13 16:48:26 +01:00
acpi_pcc.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
acpi_platform.c ACPI: video: Switch over to auxiliary bus type 2026-03-10 15:08:21 +01:00
acpi_pnp.c ACPI: PNP: Drop CMOS RTC PNP device support 2026-02-26 18:48:07 +01:00
acpi_processor.c Merge branch 'acpi-driver' 2026-04-09 21:54:15 +02:00
acpi_tad.c ACPI: TAD: Add alarm support to the RTC class device interface 2026-04-04 20:37:25 +02:00
acpi_video.c ACPI: driver: Do not set acpi_device_class() unnecessarily 2026-03-13 16:48:26 +01:00
acpi_watchdog.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
battery.c ACPI: driver: Do not set acpi_device_class() unnecessarily 2026-03-13 16:48:26 +01:00
bgrt.c sysfs: treewide: switch back to attribute_group::bin_attrs 2025-06-17 10:44:15 +02:00
bus.c ACPI: bus: Fix MFD child automatic modprobe issue 2026-03-18 11:57:22 +01:00
button.c ACPI: driver: Do not set acpi_device_class() unnecessarily 2026-03-13 16:48:26 +01:00
container.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
cppc_acpi.c Power management updates for 7.1-rc1 2026-04-13 19:47:52 -07:00
debugfs.c
device_pm.c Revert "ACPI: PM: Let acpi_dev_pm_attach() skip devices without ACPI PM" 2026-03-03 15:32:53 +01:00
device_sysfs.c ACPI: sysfs: Replace sprintf() with sysfs_emit() 2026-01-27 21:58:58 +01:00
dock.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
ec_sys.c
ec.c Merge branch 'acpi-driver' 2026-04-09 21:54:15 +02:00
event.c ACPI: event: Redefine acpi_notifier_call_chain() 2026-03-13 16:48:24 +01:00
evged.c ACPI: Switch back to struct platform_driver::remove() 2024-11-12 21:30:30 +01:00
fan_attr.c ACPI: fan: Use ACPI handle when retrieving _FST 2025-10-24 10:29:08 +02:00
fan_core.c ACPI: fan: Add support for Microsoft fan extensions 2025-10-27 20:56:01 +01:00
fan_hwmon.c ACPI: fan: Add hwmon notification support 2025-10-27 20:56:01 +01:00
fan.h Thermal control updates for 6.19-rc1 2025-12-02 17:49:12 -08:00
glue.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
hed.c ACPI: HED: Convert the driver to a platform one 2025-12-29 21:04:10 +01:00
internal.h ACPI: DPTF: Remove int340x thermal scan handler 2025-11-07 20:45:37 +01:00
ioapic.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
irq.c ACPI: irq: Add interrupt affinity reporting interface 2025-10-27 17:16:32 +01:00
Kconfig ACPI: tables: Enable FPDT on LoongArch 2026-04-06 16:43:05 +02:00
Makefile ACPI: MRRM: Minimal parse of ACPI MRRM table 2025-05-12 15:43:16 +02:00
mipi-disco-img.c Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
nhlt.c ACPI: NHLT: Streamline struct naming 2024-03-27 16:36:45 +01:00
nvs.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
osi.c ACPI: OSI: Add DMI quirk for Acer Aspire One D255 2026-02-24 15:43:51 +01:00
osl.c Locking updates for v7.1: 2026-04-14 12:36:25 -07:00
pci_irq.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
pci_link.c ACPI: driver: Do not set acpi_device_class() unnecessarily 2026-03-13 16:48:26 +01:00
pci_mcfg.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
pci_root.c ACPI: driver: Do not set acpi_device_class() unnecessarily 2026-03-13 16:48:26 +01:00
pci_slot.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
pfr_telemetry.c Merge branch 'acpi-misc' 2024-11-15 20:52:02 +01:00
pfr_update.c ACPI: pfr_update: Fix the driver update version check 2025-08-20 15:30:36 +02:00
platform_profile.c Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
power.c ACPI: scan: Use acpi_dev_put() in object add error paths 2026-04-15 16:43:58 +02:00
pptt.c Merge branches 'acpica', 'acpi-osl' and 'acpi-tables' 2026-04-09 21:19:34 +02:00
prmt.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
proc.c ACPI: proc: Prefer to use octal permission 2025-06-26 21:08:13 +02:00
processor_core.c ACPI: processor_core: fix map_x2apic_id for amd-pstate on am4 2025-11-26 18:06:25 +01:00
processor_driver.c ACPI: driver: Do not set acpi_device_class() unnecessarily 2026-03-13 16:48:26 +01:00
processor_idle.c ACPI: processor: idle: Reset cpuidle on C-state list changes 2026-04-07 15:32:20 +02:00
processor_pdc.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
processor_perflib.c Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
processor_thermal.c ACPI: processor: thermal: Release policy references using __free() 2025-09-08 19:53:32 +02:00
processor_throttling.c Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
property.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
reboot.c
resource.c ACPI: resource: Add JWIPC JVC9100 to irq1_level_low_skip_override[] 2026-01-14 17:25:19 +01:00
sbs.c ACPI: AC: Define ACPI_AC_CLASS in one place 2026-03-13 16:48:28 +01:00
sbshc.c ACPI: driver: Do not set acpi_device_class() unnecessarily 2026-03-13 16:48:26 +01:00
sbshc.h
scan.c ACPI: scan: Use acpi_dev_put() in object add error paths 2026-04-15 16:43:58 +02:00
sleep.c ACPI: PM: Save NVS memory on Lenovo G70-35 2026-02-19 11:54:52 +01:00
sleep.h ACPI: PM: s2idle: Staticise LPS0 callback functions 2025-10-20 20:39:33 +02:00
spcr.c ACPI: SPCR: Check for table version when using precise baudrate 2025-10-27 20:43:41 +01:00
sysfs.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
tables.c ACPI / MPAM: Parse the MPAM table 2025-11-19 18:34:20 +00:00
thermal_lib.c module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
thermal.c ACPI: driver: Do not set acpi_device_class() unnecessarily 2026-03-13 16:48:26 +01:00
tiny-power-button.c ACPI: tiny-power-button: Convert the driver to a platform one 2025-12-26 15:08:57 +01:00
utils.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
video_detect.c ACPI: video: force native backlight on HP OMEN 16 (8A44) 2026-04-27 22:00:00 +02:00
viot.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
wakeup.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00