https://bugzilla.kernel.org/show_bug.cgi?id=222042

            Bug ID: 222042
           Summary: Laptop screen stays in full brightness
           Product: ACPI
           Version: 2.5
          Hardware: AMD
                OS: Linux
            Status: NEW
          Severity: low
          Priority: P3
         Component: Power-Video
          Assignee: [email protected]
          Reporter: [email protected]
        Regression: No

When using kernel 7.2.5, my laptop screen is stuck at full brightness.  I move
the brightness buttons up and down, and the "sun" dial shows up as registering
the brightness level change I want to have, but the actual brightness stays at
100% no matter what.  The screen actually looks disconcertingly bright, more
than 100% if that makes sense, the edges look slightly darker compared to the
rest, and images stay imprinted (like a ghost image).  When I boot back on the
previous kernel I had, 7.2.4, brightness control is fine.

I'm using a standard Fedora 44 distribution kernel (7.2.5-200.fc44.x86_64).  I
have practically the same system installed on two desktops with external
monitors, those are behaving just fine.  Only my laptop has this problem. 
Here's more info on this laptop (submitted while I was using the good kernel):

hostnamectl
     Static hostname: thinkpad-e16
           Icon name: computer-laptop
             Chassis: laptop 💻
   Chassis Asset Tag: No Asset Information
          Machine ID: 93f42a490ed74d799c36b44499c85885
             Boot ID: 44dafcf0a74f44148ebf2e350c47c49d
        Product UUID: aed95bcc-2517-11b2-a85c-c94fcd058a77
    Operating System: Fedora Linux 44 (Workstation Edition)        
         CPE OS Name: cpe:/o:fedoraproject:fedora:44
      OS Support End: Wed 2027-05-19
OS Support Remaining: 7month 3w 5d
              Kernel: Linux 7.2.4-200.fc44.x86_64
        Architecture: x86-64
     Hardware Vendor: Lenovo
      Hardware Model: ThinkPad E16 Gen 2
     Hardware Serial: PF5YVSNQ
        Hardware SKU: LENOVO_MT_21M5_BU_Think_FM_ThinkPad E16 Gen 2
    Firmware Version: R2KET35W (1.18 )
       Firmware Date: Thu 2025-07-24
        Firmware Age: 1y 1month 4w

lscpu
Architecture:                x86_64
  CPU op-mode(s):            32-bit, 64-bit
  Address sizes:             48 bits physical, 48 bits virtual
  Byte Order:                Little Endian
CPU(s):                      16
  On-line CPU(s) list:       0-15
Vendor ID:                   AuthenticAMD
  Model name:                AMD Ryzen 7 7735HS with Radeon Graphics
    CPU family:              25
    Model:                   68
    Thread(s) per core:      2
    Core(s) per socket:      8
    Socket(s):               1
    Stepping:                1
    Frequency boost:         enabled
    CPU(s) scaling MHz:      30%
    CPU max MHz:             4830.6001
    CPU min MHz:             407.4000
    BogoMIPS:                6387.54
    Flags:                   fpu vme de pse tsc msr pae mce cx8 apic sep mtrr
pge mca cmov pat pse36 clfl
                             ush mmx fxsr sse sse2 ht syscall nx mmxext
fxsr_opt pdpe1gb rdtscp lm consta
                             nt_tsc rep_good nopl xtopology nonstop_tsc cpuid
extd_apicid aperfmperf rapl
                              pni pclmulqdq monitor ssse3 fma cx16 sse4_1
sse4_2 x2apic movbe popcnt aes 
                             xsave avx f16c rdrand lahf_lm cmp_legacy svm
extapic cr8_legacy abm sse4a mi
                             salignsse 3dnowprefetch osvw ibs skinit wdt tce
topoext perfctr_core perfctr
                             _nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3
hw_pstate ssbd mba ibrs ibpb 
                             stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 erms
invpcid cqm rdt_a rdseed adx
                              smap clflushopt clwb sha_ni xsaveopt xsavec
xgetbv1 xsaves cqm_llc cqm_occu
                             p_llc cqm_mbm_total cqm_mbm_local user_shstk
clzero irperf xsaveerptr rdpru 
                             wbnoinvd cppc arat npt lbrv svm_lock nrip_save
tsc_scale vmcb_clean flushbya
                             sid decodeassists pausefilter pfthreshold avic
v_vmsave_vmload vgif v_spec_c
                             trl umip pku ospke vaes vpclmulqdq rdpid
overflow_recov succor smca fsrm deb
                             ug_swap
Virtualization features:     
  Virtualization:            AMD-V
Caches (sum of all):         
  L1d:                       256 KiB (8 instances)
  L1i:                       256 KiB (8 instances)
  L2:                        4 MiB (8 instances)
  L3:                        16 MiB (1 instance)
NUMA:                        
  NUMA node(s):              1
  NUMA node0 CPU(s):         0-15
Vulnerabilities:             
  Gather data sampling:      Not affected
  Ghostwrite:                Not affected
  Indirect target selection: Not affected
  Itlb multihit:             Not affected
  L1tf:                      Not affected
  Mds:                       Not affected
  Meltdown:                  Not affected
  Mmio stale data:           Not affected
  Old microcode:             Not affected
  Reg file data sampling:    Not affected
  Retbleed:                  Not affected
  Spec rstack overflow:      Mitigation; Safe RET
  Spec store bypass:         Mitigation; Speculative Store Bypass disabled via
prctl
  Spectre v1:                Mitigation; usercopy/swapgs barriers and __user
pointer sanitization
  Spectre v2:                Mitigation; Retpolines; IBPB conditional; IBRS_FW;
STIBP always-on; RSB fill
                             ing; PBRSB-eIBRS Not affected; BHI Not affected
  Srbds:                     Not affected
  Tsa:                       Mitigation; Clear CPU buffers
  Tsx async abort:           Not affected
  Vmscape:                   Mitigation; IBPB before exit to userspace

lspci -nnk
00:00.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 17h-19h
PCIe Root Complex [1022:14b5] (rev 01)
        Subsystem: Lenovo Device [17aa:50ec]
00:00.2 IOMMU [0806]: Advanced Micro Devices, Inc. [AMD] Family 17h-19h IOMMU
[1022:14b6]
        Subsystem: Lenovo Device [17aa:50ec]
00:01.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 17h-19h
PCIe Dummy Host Bridge [1022:14b7] (rev 01)
00:01.2 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Family 17h-19h
PCIe GPP Bridge [1022:14b8]
        Subsystem: Lenovo Device [17aa:50ec]
        Kernel driver in use: pcieport
        Kernel modules: shpchp
00:02.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 17h-19h
PCIe Dummy Host Bridge [1022:14b7] (rev 01)
00:02.1 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Family 17h-19h
PCIe GPP Bridge [1022:14ba]
        Subsystem: Lenovo Device [17aa:50ec]
        Kernel driver in use: pcieport
        Kernel modules: shpchp
00:02.2 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Family 17h-19h
PCIe GPP Bridge [1022:14ba]
        Subsystem: Lenovo Device [17aa:50ec]
        Kernel driver in use: pcieport
        Kernel modules: shpchp
00:02.4 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Family 17h-19h
PCIe GPP Bridge [1022:14ba]
        Subsystem: Lenovo Device [17aa:50ec]
        Kernel driver in use: pcieport
        Kernel modules: shpchp
00:03.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 17h-19h
PCIe Dummy Host Bridge [1022:14b7] (rev 01)
00:04.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 17h-19h
PCIe Dummy Host Bridge [1022:14b7] (rev 01)
00:08.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 17h-19h
PCIe Dummy Host Bridge [1022:14b7] (rev 01)
00:08.1 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Family 17h-19h
Internal PCIe GPP Bridge [1022:14b9] (rev 10)
        Subsystem: Device [50ec:17aa]
        Kernel driver in use: pcieport
        Kernel modules: shpchp
00:08.3 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Family 17h-19h
Internal PCIe GPP Bridge [1022:14b9] (rev 10)
pcilib: Error reading /sys/bus/pci/devices/0000:00:08.3/label: Operation not
permitted
        Subsystem: Device [50ec:17aa]
        Kernel driver in use: pcieport
        Kernel modules: shpchp
00:14.0 SMBus [0c05]: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller
[1022:790b] (rev 71)
        Subsystem: Lenovo Device [17aa:50ec]
        Kernel driver in use: piix4_smbus
        Kernel modules: i2c_piix4, sp5100_tco
00:14.3 ISA bridge [0601]: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge
[1022:790e] (rev 51)
        Subsystem: Lenovo Device [17aa:50ec]
00:18.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Rembrandt Data
Fabric: Device 18h; Function 0 [1022:1679]
00:18.1 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Rembrandt Data
Fabric: Device 18h; Function 1 [1022:167a]
00:18.2 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Rembrandt Data
Fabric: Device 18h; Function 2 [1022:167b]
00:18.3 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Rembrandt Data
Fabric: Device 18h; Function 3 [1022:167c]
        Kernel driver in use: k10temp
        Kernel modules: k10temp
00:18.4 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Rembrandt Data
Fabric: Device 18h; Function 4 [1022:167d]
00:18.5 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Rembrandt Data
Fabric: Device 18h; Function 5 [1022:167e]
00:18.6 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Rembrandt Data
Fabric: Device 18h; Function 6 [1022:167f]
00:18.7 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Rembrandt Data
Fabric: Device 18h; Function 7 [1022:1680]
01:00.0 Non-Volatile memory controller [0108]: Phison Electronics Corporation
PS5027-E27T PCIe4 NVMe Controller (DRAM-less) [1987:5027] (rev 01)
        Subsystem: Phison Electronics Corporation PS5027-E27T PCIe4 NVMe
Controller (DRAM-less) [1987:5027]
        Kernel driver in use: nvme
        Kernel modules: nvme
02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd.
RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev
15)
        Subsystem: Lenovo Device [17aa:50ec]
        Kernel driver in use: r8169
        Kernel modules: r8169
03:00.0 Network controller [0280]: MEDIATEK Corp. MT7922 802.11ax PCI Express
Wireless Network Adapter [14c3:0616]
        Subsystem: Lenovo Device [17aa:e0c6]
        Kernel driver in use: mt7921e
        Kernel modules: mt7921e
04:00.0 Non-Volatile memory controller [0108]: Samsung Electronics Co Ltd NVMe
SSD Controller PM9C1a (DRAM-less) [144d:a80d]
        Subsystem: Samsung Electronics Co Ltd Device [144d:a801]
        Kernel driver in use: nvme
        Kernel modules: nvme
05:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc.
[AMD/ATI] Rembrandt [Radeon 680M] [1002:1681] (rev 0a)
        Subsystem: Lenovo Device [17aa:50ec]
        Kernel driver in use: amdgpu
        Kernel modules: amdgpu
05:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Radeon High
Definition Audio Controller [1002:1640]
        Subsystem: Lenovo Device [17aa:50ec]
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd_hda_intel
05:00.2 Encryption controller [1080]: Advanced Micro Devices, Inc. [AMD] Family
19h PSP/CCP [1022:1649]
        Subsystem: Lenovo Device [17aa:50ec]
        Kernel driver in use: ccp
        Kernel modules: ccp
05:00.3 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] Rembrandt
USB4 XHCI controller #3 [1022:161d]
        Subsystem: Lenovo Device [17aa:50ec]
        Kernel driver in use: xhci_hcd
        Kernel modules: xhci_pci
05:00.4 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] Rembrandt
USB4 XHCI controller #4 [1022:161e]
        Subsystem: Lenovo Device [17aa:50ec]
        Kernel driver in use: xhci_hcd
        Kernel modules: xhci_pci
05:00.5 Multimedia controller [0480]: Advanced Micro Devices, Inc. [AMD] Audio
Coprocessor [1022:15e2] (rev 60)
        Subsystem: Lenovo Device [17aa:50ed]
        Kernel driver in use: snd_pci_acp6x
        Kernel modules: snd_pci_acp3x, snd_rn_pci_acp3x, snd_pci_acp5x,
snd_pci_acp6x, snd_acp_pci, snd_pci_ps, snd_pci_acp7x, snd_sof_amd_renoir,
snd_sof_amd_rembrandt, snd_sof_amd_vangogh, snd_sof_amd_acp63,
snd_sof_amd_acp70
05:00.6 Audio device [0403]: Advanced Micro Devices, Inc. [AMD] Ryzen HD Audio
Controller [1022:15e3]
        Subsystem: Lenovo Device [17aa:50ec]
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd_hda_intel
06:00.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] Rembrandt
USB4 XHCI controller #8 [1022:161f]
        Subsystem: Lenovo Device [17aa:50ec]
        Kernel driver in use: xhci_hcd
        Kernel modules: xhci_pci
06:00.3 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] Rembrandt
USB4 XHCI controller #5 [1022:15d6]
        Subsystem: Advanced Micro Devices, Inc. [AMD] Rembrandt USB4 XHCI
controller #5 [1022:15d6]
        Kernel driver in use: xhci_hcd
        Kernel modules: xhci_pci
06:00.4 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] Rembrandt
USB4 XHCI controller #6 [1022:15d7]
        Subsystem: Advanced Micro Devices, Inc. [AMD] Rembrandt USB4 XHCI
controller #6 [1022:15d7]
        Kernel driver in use: xhci_hcd
        Kernel modules: xhci_pci

lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 0489:e0d8 Foxconn / Hon Hai Bluetooth 5.2 Adapter
[MediaTek MT7922]
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 04f3:0c8c Elan Microelectronics Corp. ELAN:ARM-M4
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 002: ID 174f:1820 Syntek Integrated Camera
Bus 006 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 007 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 008 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 009 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

lshw -short
H/W path            Device          Class          Description
==============================================================
                                    system         21M5001CGQ
(LENOVO_MT_21M5_BU_Think_FM_ThinkPad E16 Ge
/0                                  bus            21M5001CGQ
/0/0                                memory         512KiB L1 cache
/0/1                                memory         4MiB L2 cache
/0/2                                memory         16MiB L3 cache
/0/3                                processor      AMD Ryzen 7 7735HS with
Radeon Graphics
/0/5                                memory         32GiB System Memory
/0/5/0                              memory         16GiB SODIMM Synchronous
Unbuffered (Unregistered) 480
/0/5/1                              memory         16GiB SODIMM Synchronous
Unbuffered (Unregistered) 480
/0/e                                memory         128KiB BIOS
/0/100                              bridge         Family 17h-19h PCIe Root
Complex
/0/100/0.2                          generic        Family 17h-19h IOMMU
/0/100/1.2                          bridge         Family 17h-19h PCIe GPP
Bridge
/0/100/1.2/0        /dev/nvme0      storage        PSENN512GA87FC0
/0/100/1.2/0/0      hwmon3          disk           NVMe disk
/0/100/1.2/0/2      /dev/ng0n1      disk           NVMe disk
/0/100/1.2/0/1      /dev/nvme0n1    disk           512GB NVMe disk
/0/100/1.2/0/1/1                    volume         599MiB Windows FAT volume
/0/100/1.2/0/1/2    /dev/nvme0n1p2  volume         2GiB EXT4 volume
/0/100/1.2/0/1/3    /dev/nvme0n1p3  volume         474GiB EFI partition
/0/100/2.1                          bridge         Family 17h-19h PCIe GPP
Bridge
/0/100/2.1/0        enp2s0          network        RTL8111/8168/8211/8411 PCI
Express Gigabit Ethernet Co
/0/100/2.2                          bridge         Family 17h-19h PCIe GPP
Bridge
/0/100/2.2/0        wlp3s0          network        MT7922 802.11ax PCI Express
Wireless Network Adapter
/0/100/2.4                          bridge         Family 17h-19h PCIe GPP
Bridge
/0/100/2.4/0        /dev/nvme1      storage        SAMSUNG MZAL8512HFLU-00BLL
/0/100/2.4/0/0      hwmon4          disk           NVMe disk
/0/100/2.4/0/2      /dev/ng1n1      disk           NVMe disk
/0/100/2.4/0/1      /dev/nvme1n1    disk           512GB NVMe disk
/0/100/2.4/0/1/1    /dev/nvme1n1p1  volume         476GiB EFI partition
/0/100/8.1          input10         bridge         Video Bus
/0/100/8.1/0                        display        Rembrandt [Radeon 680M]
/0/100/8.1/0.1      card0           multimedia     Radeon High Definition Audio
Controller
/0/100/8.1/0.1/0    input16         input          HD-Audio Generic
HDMI/DP,pcm=3
/0/100/8.1/0.1/1    input17         input          HD-Audio Generic
HDMI/DP,pcm=7
/0/100/8.1/0.1/2    input18         input          HD-Audio Generic
HDMI/DP,pcm=8
/0/100/8.1/0.2                      generic        Family 19h PSP/CCP
/0/100/8.1/0.3                      bus            Rembrandt USB4 XHCI
controller #3
/0/100/8.1/0.3/0    usb1            bus            xHCI Host Controller
/0/100/8.1/0.3/0/4                  communication  Wireless_Device
/0/100/8.1/0.3/1    usb2            bus            xHCI Host Controller
/0/100/8.1/0.4                      bus            Rembrandt USB4 XHCI
controller #4
/0/100/8.1/0.4/0    usb3            bus            xHCI Host Controller
/0/100/8.1/0.4/0/3                  generic        ELAN:ARM-M4
/0/100/8.1/0.4/1    usb4            bus            xHCI Host Controller
/0/100/8.1/0.5      card2           multimedia     Audio Coprocessor
/0/100/8.1/0.6      card1           multimedia     Ryzen HD Audio Controller
/0/100/8.1/0.6/0    input19         input          HD-Audio Generic Mic
/0/100/8.1/0.6/1    input20         input          HD-Audio Generic Headphone
/0/100/8.3                          bridge         Family 17h-19h Internal PCIe
GPP Bridge
/0/100/8.3/0                        bus            Rembrandt USB4 XHCI
controller #8
/0/100/8.3/0/1      usb5            bus            xHCI Host Controller
/0/100/8.3/0/1/1                    multimedia     Integrated Camera
/0/100/8.3/0.3                      bus            Rembrandt USB4 XHCI
controller #5
/0/100/8.3/0.3/0    usb6            bus            xHCI Host Controller
/0/100/8.3/0.3/1    usb7            bus            xHCI Host Controller
/0/100/8.3/0.4                      bus            Rembrandt USB4 XHCI
controller #6
/0/100/8.3/0.4/0    usb8            bus            xHCI Host Controller
/0/100/8.3/0.4/1    usb9            bus            xHCI Host Controller
/0/100/14                           bus            FCH SMBus Controller
/0/100/14.3                         bridge         FCH LPC Bridge
/0/100/14.3/0                       generic        PnP device LEN0071
/0/100/14.3/1                       generic        PnP device LEN0321
/0/101                              bridge         Family 17h-19h PCIe Dummy
Host Bridge
/0/102                              bridge         Family 17h-19h PCIe Dummy
Host Bridge
/0/103                              bridge         Family 17h-19h PCIe Dummy
Host Bridge
/0/104                              bridge         Family 17h-19h PCIe Dummy
Host Bridge
/0/105                              bridge         Family 17h-19h PCIe Dummy
Host Bridge
/0/106                              bridge         Rembrandt Data Fabric:
Device 18h; Function 0
/0/107                              bridge         Rembrandt Data Fabric:
Device 18h; Function 1
/0/108                              bridge         Rembrandt Data Fabric:
Device 18h; Function 2
/0/109                              bridge         Rembrandt Data Fabric:
Device 18h; Function 3
/0/10a                              bridge         Rembrandt Data Fabric:
Device 18h; Function 4
/0/10b                              bridge         Rembrandt Data Fabric:
Device 18h; Function 5
/0/10c                              bridge         Rembrandt Data Fabric:
Device 18h; Function 6
/0/10d                              bridge         Rembrandt Data Fabric:
Device 18h; Function 7
/1                                  power          LNV-5B11M75269
/2                  input0          input          Power Button
/3                  input1          input          Lid Switch
/4                  input11         input          SYNA801A:00 06CB:CEC6 Mouse
/5                  input12         input          SYNA801A:00 06CB:CEC6
Touchpad
/6                  input14         input          ThinkPad Extra Buttons
/7                  input15         input          PC Speaker
/8                  input2          input          Sleep Button
/9                  input3          input          Power Button
/a                  input4          input          AT Translated Set 2 keyboard
/b                  input6          input          TPPS/2 Elan TrackPoint

journalctl -b -1 # fragment where errors in red font started:
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: Added _OSI(Module Device)
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: Added _OSI(Processor Device)
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: Added _OSI(Processor Aggregator
Device)
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI BIOS Error (bug): Could not resolve
symbol [\_SB.PCI0.GPP0], AE_NOT_FOUND (20260408/dswload2-162)
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI Error: AE_NOT_FOUND, During name
lookup/catalog (20260408/psobject-220)
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: Skipping parse of AML opcode: Scope
(0x0010)
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI BIOS Error (bug): Failure creating
named object [\_SB.PCI0.GP17.XHC0.PSTA], AE_ALREADY_EXISTS
(20260408/dswload2-326)
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI Error: AE_ALREADY_EXISTS, During name
lookup/catalog (20260408/psobject-220)
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: Skipping parse of AML opcode: Method
(0x0014)
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI BIOS Error (bug): Failure creating
named object [\_SB._OSC], AE_ALREADY_EXISTS (20260408/dswload2-326)
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI Error: AE_ALREADY_EXISTS, During name
lookup/catalog (20260408/psobject-220)
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: Skipping parse of AML opcode: Method
(0x0014)
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: 23 ACPI AML tables successfully
acquired and loaded
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: [Firmware Bug]: BIOS _OSI(Linux)
query ignored
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_: platform _OSC: OS support
mask [006e7eff]
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_: platform _OSC: OS control
mask [006e7e7f]
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: USB4 _OSC: OS supports USB3+
DisplayPort+ PCIe+ XDomain+
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: USB4 _OSC: OS controls USB3+
DisplayPort+ PCIe+ XDomain+
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: EC: EC started
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: EC: interrupt blocked
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: EC: EC_CMD/EC_SC=0x66, EC_DATA=0x62
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.LPC0.EC0_: Boot DSDT EC
used to handle transactions
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: Interpreter enabled
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: PM: (supports S0 S4 S5)
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: Using IOAPIC for interrupt routing
Sep 20 19:46:42 thinkpad-e16 kernel: PCI: Using host bridge windows from ACPI;
if necessary, use "pci=nocrs" and report a bug
Sep 20 19:46:42 thinkpad-e16 kernel: PCI: Ignoring E820 reservations for host
bridge windows
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: Enabled 2 GPEs in block 00 to 1F
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GPP1.P0NV: New power
resource
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GPP6.PXSX.WRST: New power
resource
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GPP8.P0NV: New power
resource
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GP11.PWRS: New power
resource
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GP11: Overriding _PRW
sleep state (S4) by S0 from power resources
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GP11.SWUS.PWRS: New power
resource
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GP12.PWRS: New power
resource
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GP12: Overriding _PRW
sleep state (S4) by S0 from power resources
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GP12.SWUS.PWRS: New power
resource
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GP17.PWRS: New power
resource
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GP17.VGA_.PWRS: New power
resource
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GP17.ACP_.PWRS: New power
resource
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GP17.AZAL.PWRS: New power
resource
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GP17.HDAU.PWRS: New power
resource
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GP17.XHC0.PWRS: New power
resource
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GP17.XHC0.RHUB.HS04.BTRT:
New power resource
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GP17.XHC1.PWRS: New power
resource
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GP17.XHC1.BTPR: New power
resource
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GP18.SATA.P0S0: New power
resource
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GP18.SATA.P3S0: New power
resource
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GP19.NHI0.PWRS: New power
resource
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GP19.NHI0: Overriding
_PRW sleep state (S3) by S0 from power resources
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GP19.NHI1.PWRS: New power
resource
Sep 20 19:46:42 thinkpad-e16 kernel: ACPI: \_SB_.PCI0.GP19.NHI1: Overriding
_PRW sleep state (S3) by S0 from power resources

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