Package: linux-image-6.1.0-10-amd64 Version: 6.1.37-1 In the journal of a laptop Lenovo ThinkPad T14s Gen1, connected to a docking station ThinkPad Thunderbolt 3 Dock Gen 2/Workstation Dock Gen 2 Type 40 AN (which is powered by a 135 W AC Adapter ADL135NCC3A) and to a monitor Philips 275B1 via a HMDI cable, we discovered the following warning (last line is yellow) generated at boot: Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: Freeing initrd memory: 78744K Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: alg: self-tests for CTR-KDF (hmac(sha256)) passed Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: Block layer SCSI generic (bsg) driver version 0.4 loaded (major 250) Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: io scheduler mq-deadline registered Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: pcieport 0000:00:1c.0: PME: Signaling with IRQ 122 Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: pcieport 0000:00:1c.4: PME: Signaling with IRQ 123 Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: pcieport 0000:00:1c.4: pciehp: Slot #4 AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug+ Surprise+ Interlock- NoCompl+ IbPresDis- LLActRep+ Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: pcieport 0000:00:1d.0: PME: Signaling with IRQ 124 Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: pcieport 0000:00:1d.0: pciehp: Slot #0 AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug+ Surprise+ Interlock- NoCompl+ IbPresDis- LLActRep+ Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: pcieport 0000:00:1d.4: PME: Signaling with IRQ 125 Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: pcieport 0000:04:01.0: pciehp: Slot #1 AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug+ Surprise+ Interlock- NoCompl+ IbPresDis- LLActRep+ Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: shpchp: Standard Hot Plug PCI Controller Driver version: 0.4 Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: thermal LNXTHERM:00: registered as thermal_zone0 Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: ACPI: thermal: Thermal Zone [THM0] (72 C) Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: serial 0000:00:16.3: enabling device (0000 -> 0003) Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: 0000:00:16.3: ttyS0 at I/O 0x4060 (irq = 19, base_baud = 115200) is a 16550A Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: hpet_acpi_add: no address or irqs in _CRS As the laptop has some issues later (e.g., the contents of the external and internal screens do not fully match in tty text mode: the output to the external monitor is cut below), we'd like to know the extent and consequences of the above warning “hpet_acpi_add: no address or irqs in _CRS”. I plain English, what does it tell us? What does it warn us about, and which actions should we undertake to avoid whichever havoc it might promise? Here is some more data: # journalctl -b| grep -i -C1 hpet Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: ACPI: BOOT 0x000000009CB2F000 000028 (v01 LENOVO TP-N2Y 00001260 PTEC 00000002) Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: ACPI: HPET 0x000000009CB2A000 000038 (v01 LENOVO TP-N2Y 00001260 PTEC 00000002) Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: ACPI: APIC 0x000000009CB29000 000164 (v04 LENOVO TP-N2Y 00001260 PTEC 00000002) -- Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: ACPI: Reserving BOOT table memory at [mem 0x9cb2f000-0x9cb2f027] Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: ACPI: Reserving HPET table memory at [mem 0x9cb2a000-0x9cb2a037] Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: ACPI: Reserving APIC table memory at [mem 0x9cb29000-0x9cb29163] -- Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: ACPI: Using ACPI (MADT) for SMP configuration information Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: ACPI: HPET id: 0x8086a201 base: 0xfed00000 Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: e820: update [mem 0x94e5b000-0x9509bfff] usable ==> reserved -- Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: ACPI: Core revision 20220331 Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: hpet: HPET dysfunctional in PC10. Force disabled. Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: APIC: Switch to symmetric I/O mode setup -- Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: DMAR-IR: IOAPIC id 2 under DRHD base 0xfed91000 IOMMU 1 Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: DMAR-IR: HPET id 0 under DRHD base 0xfed91000 Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: DMAR-IR: Queued invalidation will be enabled to support x2apic and Intr-remapping. -- Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: 0000:00:16.3: ttyS0 at I/O 0x4060 (irq = 19, base_baud = 115200) is a 16550A Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: hpet_acpi_add: no address or irqs in _CRS Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: Linux agpgart interface v0.103 Gratefully, AlMa
