localhost:~ # update-bootloader --get-option amd_pstate
amd_pstate=active
localhost:~ # cpupower frequency-info
analyzing CPU 6:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 6
CPUs which need to have their frequency coordinated by software: 6
maximum transition latency: Cannot determine or is not supported.
hardware limits: 1.40 GHz - 4.37 GHz
available frequency steps: 1.80 GHz, 1.70 GHz, 1.40 GHz
available cpufreq governors: ondemand performance schedutil
current policy: frequency should be within 1.40 GHz and 1.80 GHz.
The governor "schedutil" may decide which speed to use
within this range.
current CPU frequency: 1.80 GHz (asserted by call to hardware)
boost state support:
Supported: yes
Active: yes
Boost States: 0
Total States: 3
Pstate-P0: 1800MHz
Pstate-P1: 1700MHz
Pstate-P2: 1400MHz
After reboot. No changes to the GUI.
Yes, and as you can see, no changes in the output; cpupower driver stays same but the pstate parameter is showing as active.
Yes, we see that. Please show
cat /sys/devices/system/cpu/amd_pstate/status
sudo dmesg | grep -i amd_pstate
No such file or directory could be found.
localhost:~ # sudo dmesg | grep -i amd_pstate
[ 0.000000] [ T0] Command line: initrd=\opensuse-tumbleweed\7.1.8-1-default\initrd-37f52e5f4c6ce27caef1b551fc0b50d01d07b190 root=UUID=ced76553-425e-485c-ba40-c63d0cccffe1 splash=silent mitigations=auto quiet security=selinux selinux=1 amd_pstate=active rootflags=subvol=@/.snapshots/1/snapshot
[ 0.019110] [ T0] Kernel command line: initrd=\opensuse-tumbleweed\7.1.8-1-default\initrd-37f52e5f4c6ce27caef1b551fc0b50d01d07b190 root=UUID=ced76553-425e-485c-ba40-c63d0cccffe1 splash=silent mitigations=auto quiet security=selinux selinux=1 amd_pstate=active rootflags=subvol=@/.snapshots/1/snapshot
[ 0.473087] [ T1] amd_pstate: The CPPC feature is supported but currently disabled by the BIOS.
[ 0.474694] [ T1] amd_pstate: Failed to initialize CPU 0: -524
[ 0.474727] [ T1] amd_pstate: Failed to initialize CPU 1: -524
[ 0.474847] [ T1] amd_pstate: Failed to initialize CPU 2: -524
[ 0.474913] [ T1] amd_pstate: Failed to initialize CPU 3: -524
[ 0.475032] [ T1] amd_pstate: Failed to initialize CPU 4: -524
[ 0.475161] [ T1] amd_pstate: Failed to initialize CPU 5: -524
[ 0.475286] [ T1] amd_pstate: Failed to initialize CPU 6: -524
[ 0.475416] [ T1] amd_pstate: Failed to initialize CPU 7: -524
[ 0.475548] [ T1] amd_pstate: Failed to initialize CPU 8: -524
[ 0.475674] [ T1] amd_pstate: Failed to initialize CPU 9: -524
[ 0.475797] [ T1] amd_pstate: Failed to initialize CPU 10: -524
[ 0.475926] [ T1] amd_pstate: Failed to initialize CPU 11: -524
[ 0.476048] [ T1] amd_pstate: Failed to initialize CPU 12: -524
[ 0.476167] [ T1] amd_pstate: Failed to initialize CPU 13: -524
[ 0.476308] [ T1] amd_pstate: Failed to initialize CPU 14: -524
[ 0.476457] [ T1] amd_pstate: Failed to initialize CPU 15: -524
[ 0.476472] [ T1] amd_pstate: failed to register with return -19
I suppose this speaks volumes?
Also, I will be unavailable for some hours. Please list down whatever information you require, I’ll try to respond at the earliest when I am back.
Yes, it does. The Ryzen 7 5700U supports amd_pstate, and the kernel is attempting to use it, but the laptop’s firmware has CPPC disabled.
Check the UEFI/BIOS again, and also check whether there is a newer firmware available for this Toshiba perhaps?
I checked. The system is already running the latest firmware available. Nothing new to see in BIOS/UEFI.
If I am not mistaken, CPPC is deactivated/not supported in Lenovo’s BIOS for Zen 2 CPUs, since it is not recommended by AMD.
Seems like it. I’m trying to look for ways to enable CPPC. From what I’ve read, Lenovo gatekeeps such advanced options via their stripped down “consumer grade” UEFI interface. An advanced interface can be accessed but it is all trial and error.
Be careful, this might brick your motherboard. By the way, power profiles work fine here with KDE, tlp’s power profile daemon tlp-pd and AMD Ryzen 7 PRO 4750U. What is your output of
cat /sys/firmware/acpi/platform_profile
cat /sys/firmware/acpi/platform_profile_choices
For both commands, no such files or directories were found.
I presume the kernel module “ideapad-laptop” is loaded. There are various patches for this module in upcoming kernel versions, I would give 7.2 a try (might also be a problem with Lenovo’s firmware). Anyway, I would open a bug report.
Using “sudo dmesg”, do you see any errors on broken ACPI tables?
Here, I ran sudo dmesg -T | grep -i acpi right after a restart and got this output.
localhost:~ # sudo dmesg -T | grep -i acpi
[Sun Aug 16 19:21:14 2026] [ T0] BIOS-e820: [mem 0x0000000009f00000-0x0000000009f0efff] ACPI NVS
[Sun Aug 16 19:21:14 2026] [ T0] BIOS-e820: [mem 0x00000000cb47e000-0x00000000cd57dfff] ACPI NVS
[Sun Aug 16 19:21:14 2026] [ T0] BIOS-e820: [mem 0x00000000cd57e000-0x00000000cd5fdfff] ACPI data
[Sun Aug 16 19:21:14 2026] [ T0] efi: ACPI=0xcd5fd000 ACPI 2.0=0xcd5fd014 SMBIOS=0xc9356000 SMBIOS 3.0=0xc9349000 TPMFinalLog=0xcc422000 MEMATTR=0xc3ccc298 ESRT=0xc54ebd18 MOKvar=0xc8069000 RNG=0xcd5fcf18 INITRD=0x8622de18 TPMEventLog=0xcd5f0018
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Early table checksum verification disabled
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: RSDP 0x00000000CD5FD014 000024 (v02 LENOVO)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: XSDT 0x00000000CD5FB188 0000EC (v01 LENOVO CB-01 00000003 PTEC 00000002)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: FACP 0x00000000C80A9000 000114 (v06 LENOVO CB-01 00000003 PTEC 00000002)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: DSDT 0x00000000C8098000 00C180 (v01 LENOVO AMD 00001000 INTL 20180313)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: FACS 0x00000000CBB7F000 000040
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: SSDT 0x00000000C938A000 000CDF (v01 LENOVO UsbCTabl 00000001 INTL 20180313)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: SSDT 0x00000000C937D000 0072B0 (v02 LENOVO AmdTable 00000002 MSFT 04000000)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: IVRS 0x00000000C937C000 0001A4 (v02 LENOVO CB-01 00000001 PTEC 00000002)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: SSDT 0x00000000C9329000 0015D1 (v01 LENOVO WmiTable 00000001 INTL 20180313)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: MSDM 0x00000000C92C1000 000055 (v03 LENOVO CB-01 00000000 PTEC 00000002)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: BATB 0x00000000C92AB000 00004A (v02 LENOVO CB-01 00000000 PTEC 00000002)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: HPET 0x00000000C80A8000 000038 (v01 LENOVO CB-01 00000001 PTEC 00000002)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: APIC 0x00000000C80A7000 000138 (v02 LENOVO CB-01 00000000 PTEC 00000002)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: MCFG 0x00000000C80A6000 00003C (v01 LENOVO CB-01 00000001 PTEC 00000002)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: WSMT 0x00000000C80A5000 000028 (v01 LENOVO CB-01 00000000 PTEC 00000002)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: VFCT 0x00000000C808A000 00D884 (v01 LENOVO CB-01 00000001 PTEC 00000002)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: SSDT 0x00000000C8083000 005354 (v02 LENOVO AmdTable 00000001 AMD 00000001)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: CRAT 0x00000000C8082000 000F00 (v01 LENOVO CB-01 00000001 PTEC 00000002)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: CDIT 0x00000000C8081000 000029 (v01 LENOVO CB-01 00000001 PTEC 00000002)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: SSDT 0x00000000C8080000 00053A (v01 LENOVO Tpm2Tabl 00009999 INTL 20180313)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: TPM2 0x00000000C807F000 000038 (v04 LENOVO CB-01 00000002 PTEC 00000002)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: FPDT 0x00000000C807E000 000044 (v01 LENOVO CB-01 00000002 PTEC 00000002)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: SSDT 0x00000000C807D000 000149 (v01 LENOVO AmdTable 00000001 INTL 20180313)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: SSDT 0x00000000C807B000 0014C3 (v01 LENOVO AmdTable 00000001 INTL 20180313)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: SSDT 0x00000000C8079000 0015A8 (v01 LENOVO AmdTable 00000001 INTL 20180313)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: SSDT 0x00000000C8075000 003B0E (v01 LENOVO AmdTable 00000001 INTL 20180313)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: BGRT 0x00000000C8074000 000038 (v01 LENOVO CB-01 00000002 PTEC 00000002)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: UEFI 0x00000000CBB7D000 0000C6 (v01 LENOVO CB-01 00000001 PTEC 00000002)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: SSDT 0x00000000C9389000 00096A (v01 LENOVO AmdTable 00000001 INTL 20180313)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving FACP table memory at [mem 0xc80a9000-0xc80a9113]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving DSDT table memory at [mem 0xc8098000-0xc80a417f]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving FACS table memory at [mem 0xcbb7f000-0xcbb7f03f]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving SSDT table memory at [mem 0xc938a000-0xc938acde]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving SSDT table memory at [mem 0xc937d000-0xc93842af]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving IVRS table memory at [mem 0xc937c000-0xc937c1a3]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving SSDT table memory at [mem 0xc9329000-0xc932a5d0]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving MSDM table memory at [mem 0xc92c1000-0xc92c1054]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving BATB table memory at [mem 0xc92ab000-0xc92ab049]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving HPET table memory at [mem 0xc80a8000-0xc80a8037]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving APIC table memory at [mem 0xc80a7000-0xc80a7137]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving MCFG table memory at [mem 0xc80a6000-0xc80a603b]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving WSMT table memory at [mem 0xc80a5000-0xc80a5027]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving VFCT table memory at [mem 0xc808a000-0xc8097883]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving SSDT table memory at [mem 0xc8083000-0xc8088353]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving CRAT table memory at [mem 0xc8082000-0xc8082eff]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving CDIT table memory at [mem 0xc8081000-0xc8081028]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving SSDT table memory at [mem 0xc8080000-0xc8080539]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving TPM2 table memory at [mem 0xc807f000-0xc807f037]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving FPDT table memory at [mem 0xc807e000-0xc807e043]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving SSDT table memory at [mem 0xc807d000-0xc807d148]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving SSDT table memory at [mem 0xc807b000-0xc807c4c2]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving SSDT table memory at [mem 0xc8079000-0xc807a5a7]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving SSDT table memory at [mem 0xc8075000-0xc8078b0d]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving BGRT table memory at [mem 0xc8074000-0xc8074037]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving UEFI table memory at [mem 0xcbb7d000-0xcbb7d0c5]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Reserving SSDT table memory at [mem 0xc9389000-0xc9389969]
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: PM-Timer IO Port: 0x408
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x02] high edge lint[0x1])
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x03] high edge lint[0x1])
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x04] high edge lint[0x1])
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x05] high edge lint[0x1])
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x06] high edge lint[0x1])
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x07] high edge lint[0x1])
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x08] high edge lint[0x1])
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x09] high edge lint[0x1])
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x0a] high edge lint[0x1])
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x0b] high edge lint[0x1])
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x0c] high edge lint[0x1])
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x0d] high edge lint[0x1])
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x0e] high edge lint[0x1])
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x0f] high edge lint[0x1])
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 low level)
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Using ACPI (MADT) for SMP configuration information
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: HPET id: 0x43538210 base: 0xfed00000
[Sun Aug 16 19:21:14 2026] [ T0] ACPI: Core revision 20251212
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: PM: Registering ACPI NVS region [mem 0x09f00000-0x09f0efff] (61440 bytes)
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: PM: Registering ACPI NVS region [mem 0xcb47e000-0xcd57dfff] (34603008 bytes)
[Sun Aug 16 19:21:14 2026] [ T1] ACPI FADT declares the system doesn't support PCIe ASPM, so disable it
[Sun Aug 16 19:21:14 2026] [ T1] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: Added _OSI(Module Device)
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: Added _OSI(Processor Device)
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: Added _OSI(Processor Aggregator Device)
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: 11 ACPI AML tables successfully acquired and loaded
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: \_SB_: platform _OSC: OS support mask [006e7eff]
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: EC: EC started
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: EC: interrupt blocked
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: EC: EC_CMD/EC_SC=0x66, EC_DATA=0x62
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: \_SB_.PCI0.LPC0.EC0_: Boot DSDT EC used to handle transactions
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: Interpreter enabled
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: PM: (supports S0 S3 S4 S5)
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: Using IOAPIC for interrupt routing
[Sun Aug 16 19:21:14 2026] [ T1] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: \_SB_.PCI0.GPP4.WL00.WRST: New power resource
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: \_SB_.PCI0.GP17.XHC1.RHUB.HSP4.BTPR: New power resource
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: \_SB_.PCI0.GP18.P0SA: New power resource
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI EDR HPX-Type3]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0A08:00: _OSC: platform does not support [SHPCHotplug AER LTR DPC]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0A08:00: _OSC: OS now controls [PCIeHotplug PME PCIeCapability]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0A08:00: FADT indicates ASPM is unsupported, using BIOS configuration
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0A08:00: [Firmware Info]: ECAM [mem 0xf8000000-0xfbffffff] for domain 0000 [bus 00-3f] only partially covers this bridge
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: PCI: Interrupt link LNKA configured for IRQ 0
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: PCI: Interrupt link LNKB configured for IRQ 0
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: PCI: Interrupt link LNKC configured for IRQ 0
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: PCI: Interrupt link LNKD configured for IRQ 0
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: PCI: Interrupt link LNKE configured for IRQ 0
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: PCI: Interrupt link LNKF configured for IRQ 0
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: PCI: Interrupt link LNKG configured for IRQ 0
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: PCI: Interrupt link LNKH configured for IRQ 0
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: EC: interrupt unblocked
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: EC: event unblocked
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: EC: EC_CMD/EC_SC=0x66, EC_DATA=0x62
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: EC: GPE=0x3
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: \_SB_.PCI0.LPC0.EC0_: Boot DSDT EC initialization complete
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: \_SB_.PCI0.LPC0.EC0_: EC: Used to handle transactions and events
[Sun Aug 16 19:21:14 2026] [ T1] PCI: Using ACPI for IRQ routing
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0C02:00: Could not reserve [mem 0xfec00000-0xfec01fff]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0C02:00: Reserved [mem 0xfee00000-0xfee00fff]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0C02:00: Reserved [mem 0xf8000000-0xfbffffff]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0C02:01: Skipped [io 0x0022-0x0023]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0C02:01: Skipped [io 0x0072-0x0073]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0C02:01: Skipped [io 0x0080]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0C02:01: Skipped [io 0x0092]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0C02:01: Skipped [io 0x00b0-0x00b1]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0C02:01: Reserved [io 0x0400-0x04cf]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0C02:01: Reserved [io 0x04d0-0x04d1]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0C02:01: Reserved [io 0x04d6]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0C02:01: Reserved [io 0x0c00-0x0c01]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0C02:01: Reserved [io 0x0c14]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0C02:01: Reserved [io 0x0c50-0x0c52]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0C02:01: Reserved [io 0x0c6c]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0C02:01: Reserved [io 0x0c6f]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0C02:01: Reserved [io 0x0cd0-0x0cdb]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0C01:00: Could not reserve [mem 0x000e0000-0x000fffff]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0C01:00: Reserved [mem 0xff000000-0xffffffff]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0C01:00: Reserved [mem 0xfec10000-0xfec1001f]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0C01:00: Reserved [mem 0xfed00000-0xfed003ff]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0C01:00: Reserved [mem 0xfed61000-0xfed613ff]
[Sun Aug 16 19:21:14 2026] [ T1] acpi PNP0C01:00: Reserved [mem 0xfed80000-0xfed80fff]
[Sun Aug 16 19:21:14 2026] [ T1] pnp: PnP ACPI init
[Sun Aug 16 19:21:14 2026] [ T1] pnp: PnP ACPI: found 1 devices
[Sun Aug 16 19:21:14 2026] [ T1] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns
[Sun Aug 16 19:21:14 2026] [ T1] tpm_crb_acpi MSFT0101:00: Disabling hwrng
[Sun Aug 16 19:21:14 2026] [ T1] ACPI: bus type drm_connector registered
[Sun Aug 16 19:21:16 2026] [ T448] ACPI: bus type USB registered
[Sun Aug 16 19:21:16 2026] [ T476] ACPI: video: Video Device [VGA] (multi-head: yes rom: no post: no)
[Sun Aug 16 19:21:16 2026] [ T476] input: Video Bus as /devices/pci0000:00/0000:00:08.1/acpi.video_bus.0/input/input1
[Sun Aug 16 19:21:16 2026] [ T247] ACPI: battery: Slot [BAT0] (battery present)
[Sun Aug 16 19:21:20 2026] [ T449] amdgpu 0000:04:00.0: [drm] Using ACPI provided EDID for eDP-1
[Sun Aug 16 19:21:21 2026] [ T776] ACPI: button: Lid Switch [LID]
[Sun Aug 16 19:21:21 2026] [ T781] ACPI: AC: AC Adapter [ADP0] (off-line)
[Sun Aug 16 19:21:21 2026] [ T776] ACPI: button: Power Button [PWRB]
[Sun Aug 16 19:21:21 2026] [ T776] ACPI: button: Power Button [PWRF]
[Sun Aug 16 19:21:22 2026] [ T789] acpi_cpufreq: overriding BIOS provided _PSD data
[Sun Aug 16 19:21:22 2026] [ T783] ACPI: battery: new hook: Ideapad Battery Extension
[Sun Aug 16 19:21:22 2026] [ T783] ideapad_acpi VPC2004:00: Keyboard backlight control not available
[Sun Aug 16 19:21:22 2026] [ T783] ideapad_acpi VPC2004:00: DYTC_VERSION 4 support may not work. Pass ideapad_laptop.allow_v4_dytc=Y on the kernel commandline to enable
[Sun Aug 16 19:21:22 2026] [ T783] ideapad_acpi VPC2004:00: DYTC interface is not available
Rather verbose. Hopefully helps you.
Thanks for the dmesg output. For the DYCT v4 interface to work, try adding ‘ideapad_laptop.allow_v4_dytc=Y’ to the kernel command line, reboot and check ‘cat /sys/firmware/acpi/platform_profile’ again.
1 Like
@fkrueger this is a new user, likely need to show the command 
@Cat-tail_48 run;
update-bootloader --add-option ideapad_laptop.allow_v4_dytc=Y
update-bootloader --config
Then reboot the system and check the dmesg output.
1 Like
You’re welcome! I ran the commands given by @malcolmlewis and rebooted.
Input: cat /sys/firmware/acpi/platform_profile
Output: balanced
Here:
localhost:~ # sudo dmesg -T | grep -i acpi
[Sun Aug 16 19:53:38 2026] [ T0] BIOS-e820: [mem 0x0000000009f00000-0x0000000009f0efff] ACPI NVS
[Sun Aug 16 19:53:38 2026] [ T0] BIOS-e820: [mem 0x00000000cb47e000-0x00000000cd57dfff] ACPI NVS
[Sun Aug 16 19:53:38 2026] [ T0] BIOS-e820: [mem 0x00000000cd57e000-0x00000000cd5fdfff] ACPI data
[Sun Aug 16 19:53:38 2026] [ T0] efi: ACPI=0xcd5fd000 ACPI 2.0=0xcd5fd014 SMBIOS=0xc9356000 SMBIOS 3.0=0xc9349000 TPMFinalLog=0xcc422000 MEMATTR=0xc3ccc298 ESRT=0xc54ebd18 MOKvar=0xc8069000 RNG=0xcd5fcf18 INITRD=0x8622d118 TPMEventLog=0xcd5f0018
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Early table checksum verification disabled
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: RSDP 0x00000000CD5FD014 000024 (v02 LENOVO)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: XSDT 0x00000000CD5FB188 0000EC (v01 LENOVO CB-01 00000003 PTEC 00000002)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: FACP 0x00000000C80A9000 000114 (v06 LENOVO CB-01 00000003 PTEC 00000002)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: DSDT 0x00000000C8098000 00C180 (v01 LENOVO AMD 00001000 INTL 20180313)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: FACS 0x00000000CBB7F000 000040
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: SSDT 0x00000000C938A000 000CDF (v01 LENOVO UsbCTabl 00000001 INTL 20180313)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: SSDT 0x00000000C937D000 0072B0 (v02 LENOVO AmdTable 00000002 MSFT 04000000)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: IVRS 0x00000000C937C000 0001A4 (v02 LENOVO CB-01 00000001 PTEC 00000002)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: SSDT 0x00000000C9329000 0015D1 (v01 LENOVO WmiTable 00000001 INTL 20180313)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: MSDM 0x00000000C92C1000 000055 (v03 LENOVO CB-01 00000000 PTEC 00000002)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: BATB 0x00000000C92AB000 00004A (v02 LENOVO CB-01 00000000 PTEC 00000002)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: HPET 0x00000000C80A8000 000038 (v01 LENOVO CB-01 00000001 PTEC 00000002)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: APIC 0x00000000C80A7000 000138 (v02 LENOVO CB-01 00000000 PTEC 00000002)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: MCFG 0x00000000C80A6000 00003C (v01 LENOVO CB-01 00000001 PTEC 00000002)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: WSMT 0x00000000C80A5000 000028 (v01 LENOVO CB-01 00000000 PTEC 00000002)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: VFCT 0x00000000C808A000 00D884 (v01 LENOVO CB-01 00000001 PTEC 00000002)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: SSDT 0x00000000C8083000 005354 (v02 LENOVO AmdTable 00000001 AMD 00000001)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: CRAT 0x00000000C8082000 000F00 (v01 LENOVO CB-01 00000001 PTEC 00000002)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: CDIT 0x00000000C8081000 000029 (v01 LENOVO CB-01 00000001 PTEC 00000002)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: SSDT 0x00000000C8080000 00053A (v01 LENOVO Tpm2Tabl 00009999 INTL 20180313)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: TPM2 0x00000000C807F000 000038 (v04 LENOVO CB-01 00000002 PTEC 00000002)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: FPDT 0x00000000C807E000 000044 (v01 LENOVO CB-01 00000002 PTEC 00000002)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: SSDT 0x00000000C807D000 000149 (v01 LENOVO AmdTable 00000001 INTL 20180313)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: SSDT 0x00000000C807B000 0014C3 (v01 LENOVO AmdTable 00000001 INTL 20180313)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: SSDT 0x00000000C8079000 0015A8 (v01 LENOVO AmdTable 00000001 INTL 20180313)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: SSDT 0x00000000C8075000 003B0E (v01 LENOVO AmdTable 00000001 INTL 20180313)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: BGRT 0x00000000C8074000 000038 (v01 LENOVO CB-01 00000002 PTEC 00000002)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: UEFI 0x00000000CBB7D000 0000C6 (v01 LENOVO CB-01 00000001 PTEC 00000002)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: SSDT 0x00000000C9389000 00096A (v01 LENOVO AmdTable 00000001 INTL 20180313)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving FACP table memory at [mem 0xc80a9000-0xc80a9113]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving DSDT table memory at [mem 0xc8098000-0xc80a417f]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving FACS table memory at [mem 0xcbb7f000-0xcbb7f03f]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving SSDT table memory at [mem 0xc938a000-0xc938acde]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving SSDT table memory at [mem 0xc937d000-0xc93842af]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving IVRS table memory at [mem 0xc937c000-0xc937c1a3]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving SSDT table memory at [mem 0xc9329000-0xc932a5d0]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving MSDM table memory at [mem 0xc92c1000-0xc92c1054]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving BATB table memory at [mem 0xc92ab000-0xc92ab049]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving HPET table memory at [mem 0xc80a8000-0xc80a8037]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving APIC table memory at [mem 0xc80a7000-0xc80a7137]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving MCFG table memory at [mem 0xc80a6000-0xc80a603b]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving WSMT table memory at [mem 0xc80a5000-0xc80a5027]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving VFCT table memory at [mem 0xc808a000-0xc8097883]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving SSDT table memory at [mem 0xc8083000-0xc8088353]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving CRAT table memory at [mem 0xc8082000-0xc8082eff]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving CDIT table memory at [mem 0xc8081000-0xc8081028]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving SSDT table memory at [mem 0xc8080000-0xc8080539]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving TPM2 table memory at [mem 0xc807f000-0xc807f037]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving FPDT table memory at [mem 0xc807e000-0xc807e043]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving SSDT table memory at [mem 0xc807d000-0xc807d148]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving SSDT table memory at [mem 0xc807b000-0xc807c4c2]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving SSDT table memory at [mem 0xc8079000-0xc807a5a7]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving SSDT table memory at [mem 0xc8075000-0xc8078b0d]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving BGRT table memory at [mem 0xc8074000-0xc8074037]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving UEFI table memory at [mem 0xcbb7d000-0xcbb7d0c5]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Reserving SSDT table memory at [mem 0xc9389000-0xc9389969]
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: PM-Timer IO Port: 0x408
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x02] high edge lint[0x1])
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x03] high edge lint[0x1])
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x04] high edge lint[0x1])
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x05] high edge lint[0x1])
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x06] high edge lint[0x1])
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x07] high edge lint[0x1])
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x08] high edge lint[0x1])
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x09] high edge lint[0x1])
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x0a] high edge lint[0x1])
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x0b] high edge lint[0x1])
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x0c] high edge lint[0x1])
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x0d] high edge lint[0x1])
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x0e] high edge lint[0x1])
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: LAPIC_NMI (acpi_id[0x0f] high edge lint[0x1])
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 low level)
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Using ACPI (MADT) for SMP configuration information
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: HPET id: 0x43538210 base: 0xfed00000
[Sun Aug 16 19:53:38 2026] [ T0] ACPI: Core revision 20251212
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: PM: Registering ACPI NVS region [mem 0x09f00000-0x09f0efff] (61440 bytes)
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: PM: Registering ACPI NVS region [mem 0xcb47e000-0xcd57dfff] (34603008 bytes)
[Sun Aug 16 19:53:38 2026] [ T1] ACPI FADT declares the system doesn't support PCIe ASPM, so disable it
[Sun Aug 16 19:53:38 2026] [ T1] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: Added _OSI(Module Device)
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: Added _OSI(Processor Device)
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: Added _OSI(Processor Aggregator Device)
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: 11 ACPI AML tables successfully acquired and loaded
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: \_SB_: platform _OSC: OS support mask [006e7eff]
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: EC: EC started
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: EC: interrupt blocked
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: EC: EC_CMD/EC_SC=0x66, EC_DATA=0x62
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: \_SB_.PCI0.LPC0.EC0_: Boot DSDT EC used to handle transactions
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: Interpreter enabled
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: PM: (supports S0 S3 S4 S5)
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: Using IOAPIC for interrupt routing
[Sun Aug 16 19:53:38 2026] [ T1] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: \_SB_.PCI0.GPP4.WL00.WRST: New power resource
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: \_SB_.PCI0.GP17.XHC1.RHUB.HSP4.BTPR: New power resource
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: \_SB_.PCI0.GP18.P0SA: New power resource
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI EDR HPX-Type3]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0A08:00: _OSC: platform does not support [SHPCHotplug AER LTR DPC]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0A08:00: _OSC: OS now controls [PCIeHotplug PME PCIeCapability]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0A08:00: FADT indicates ASPM is unsupported, using BIOS configuration
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0A08:00: [Firmware Info]: ECAM [mem 0xf8000000-0xfbffffff] for domain 0000 [bus 00-3f] only partially covers this bridge
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: PCI: Interrupt link LNKA configured for IRQ 0
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: PCI: Interrupt link LNKB configured for IRQ 0
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: PCI: Interrupt link LNKC configured for IRQ 0
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: PCI: Interrupt link LNKD configured for IRQ 0
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: PCI: Interrupt link LNKE configured for IRQ 0
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: PCI: Interrupt link LNKF configured for IRQ 0
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: PCI: Interrupt link LNKG configured for IRQ 0
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: PCI: Interrupt link LNKH configured for IRQ 0
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: EC: interrupt unblocked
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: EC: event unblocked
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: EC: EC_CMD/EC_SC=0x66, EC_DATA=0x62
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: EC: GPE=0x3
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: \_SB_.PCI0.LPC0.EC0_: Boot DSDT EC initialization complete
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: \_SB_.PCI0.LPC0.EC0_: EC: Used to handle transactions and events
[Sun Aug 16 19:53:38 2026] [ T1] PCI: Using ACPI for IRQ routing
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0C02:00: Could not reserve [mem 0xfec00000-0xfec01fff]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0C02:00: Reserved [mem 0xfee00000-0xfee00fff]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0C02:00: Reserved [mem 0xf8000000-0xfbffffff]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0C02:01: Skipped [io 0x0022-0x0023]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0C02:01: Skipped [io 0x0072-0x0073]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0C02:01: Skipped [io 0x0080]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0C02:01: Skipped [io 0x0092]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0C02:01: Skipped [io 0x00b0-0x00b1]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0C02:01: Reserved [io 0x0400-0x04cf]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0C02:01: Reserved [io 0x04d0-0x04d1]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0C02:01: Reserved [io 0x04d6]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0C02:01: Reserved [io 0x0c00-0x0c01]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0C02:01: Reserved [io 0x0c14]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0C02:01: Reserved [io 0x0c50-0x0c52]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0C02:01: Reserved [io 0x0c6c]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0C02:01: Reserved [io 0x0c6f]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0C02:01: Reserved [io 0x0cd0-0x0cdb]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0C01:00: Could not reserve [mem 0x000e0000-0x000fffff]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0C01:00: Reserved [mem 0xff000000-0xffffffff]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0C01:00: Reserved [mem 0xfec10000-0xfec1001f]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0C01:00: Reserved [mem 0xfed00000-0xfed003ff]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0C01:00: Reserved [mem 0xfed61000-0xfed613ff]
[Sun Aug 16 19:53:38 2026] [ T1] acpi PNP0C01:00: Reserved [mem 0xfed80000-0xfed80fff]
[Sun Aug 16 19:53:38 2026] [ T1] pnp: PnP ACPI init
[Sun Aug 16 19:53:38 2026] [ T1] pnp: PnP ACPI: found 1 devices
[Sun Aug 16 19:53:38 2026] [ T1] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns
[Sun Aug 16 19:53:38 2026] [ T1] tpm_crb_acpi MSFT0101:00: Disabling hwrng
[Sun Aug 16 19:53:38 2026] [ T1] ACPI: bus type drm_connector registered
[Sun Aug 16 19:53:40 2026] [ T476] ACPI: bus type USB registered
[Sun Aug 16 19:53:40 2026] [ T138] ACPI: battery: Slot [BAT0] (battery present)
[Sun Aug 16 19:53:40 2026] [ T447] ACPI: video: Video Device [VGA] (multi-head: yes rom: no post: no)
[Sun Aug 16 19:53:40 2026] [ T447] input: Video Bus as /devices/pci0000:00/0000:00:08.1/acpi.video_bus.0/input/input1
[Sun Aug 16 19:53:44 2026] [ T438] amdgpu 0000:04:00.0: [drm] Using ACPI provided EDID for eDP-1
[Sun Aug 16 19:53:45 2026] [ T750] ACPI: button: Lid Switch [LID]
[Sun Aug 16 19:53:45 2026] [ T752] ACPI: AC: AC Adapter [ADP0] (off-line)
[Sun Aug 16 19:53:45 2026] [ T750] ACPI: button: Power Button [PWRB]
[Sun Aug 16 19:53:45 2026] [ T750] ACPI: button: Power Button [PWRF]
[Sun Aug 16 19:53:45 2026] [ T786] ACPI: battery: new hook: Ideapad Battery Extension
[Sun Aug 16 19:53:45 2026] [ T786] ideapad_acpi VPC2004:00: Keyboard backlight control not available
[Sun Aug 16 19:53:46 2026] [ T791] acpi_cpufreq: overriding BIOS provided _PSD data
Shall I rather print the whole output of sudo dmesg?
Great, so its working and ‘cat /sys/firmware/acpi/platform_choices’ shows ‘low-power balanced performance’, which should also show up in KDE.
