Re: Intel N95: OpenBSD stuck at 1700 MHz, Windows boosts up to 3.4 GHz

On Mon, Aug 17, 2026 at 09:17:29PM +0200, Sebastian Reitenbach wrote:
> Hi,
> 
> I got this fanless Intel N95 based system. It came with Windows 11
> pre-installed.
> hwinfo64 showed, that it can boost up to the promised 3.4GHz. But on
> OpenBSD,
> I tried with
> 
> apm -H, or hw.perfpolicy=high,auto
> 
> to no avail, hw.cpuspeed never goes higher than 1701.

1701 represents the turbo setting

look at the cpu frequencies in sysctl hw.sensors

> 
> I also tried in the BIOS to enable/disable Intel Speed Shift Technology,
> but no change.
> My research suggests that the ACPI Power States Table might be
> misinterpreted, causing speeds higher than 1701 to be omitted or ignored?
> But I to be honest I've no real clue about it.
> 
> Is this some known limitation? Anything I could do?
> 
> dmesg below. acpidump output attached.
> 
> cheers,
> Sebastian
> 
> OpenBSD 8.0-beta (GENERIC.MP) #91: Sat Aug 15 12:44:51 MDT 2026
>     [email protected]:/usr/src/sys/arch/amd64/compile/GENERIC.MP
> real mem = 34106941440 (32526MB)
> avail mem = 33049096192 (31518MB)
> random: good seed from bootblocks
> mpath0 at root
> scsibus0 at mpath0: 256 targets
> mainbus0 at root
> bios0 at mainbus0: SMBIOS rev. 3.6 @ 0x75c86000 (127 entries)
> bios0: vendor American Megatrends International, LLC. version "0.30" date
> 03/26/2026
> bios0: GEEKOM IX12
> efi0 at bios0: UEFI 2.8
> efi0: American Megatrends rev 0x5001b
> acpi0 at bios0: ACPI 6.5
> acpi0: sleep states S0 S5
> acpi0: tables DSDT FACP FIDT MSDM SSDT SSDT SSDT SSDT SSDT HPET APIC MCFG
> SSDT UEFI SDEV NHLT LPIT SSDT SSDT DBGP DBG2 DMAR FPDT SSDT SSDT SSDT SSDT
> PHAT TPM2 WSMT
> acpi0: wakeup devices PEGP(S4) PEGP(S4) PEGP(S4) SIO1(S3) RP09(S4) PXSX(S4)
> RP10(S4) PXSX(S4) RP11(S4) PXSX(S4) RP12(S4) PXSX(S4) RP13(S4) PXSX(S4)
> RP14(S4) PXSX(S4) [...]
> acpitimer0 at acpi0: 3579545 Hz, 24 bits
> acpihpet0 at acpi0: 19200000 Hz
> acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
> cpu0 at mainbus0: apid 0 (boot processor)
> cpu0: Intel(R) N95, 3392.18 MHz, 06-be-00, patch 00000021
> cpu0: cpuid 1
> edx=bfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
> ecx=77fafbbf<SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND>
> cpu0: cpuid 6 eax=77<SENSOR,ARAT,PTS> ecx=9<EFFFREQ>
> cpu0: cpuid 7.0
> ebx=239ca7eb<FSGSBASE,TSC_ADJUST,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,RDSEED,ADX,SMAP,CLFLUSHOPT,CLWB,PT,SHA>
> ecx=98c007ac<UMIP,PKU,WAITPKG,PKS>
> edx=fc184410<MD_CLEAR,IBT,IBRS,IBPB,STIBP,L1DF,SSBD>
> cpu0: cpuid a vers=5, gp=6, gpwidth=48, ff=3, ffwidth=48
> cpu0: cpuid d.1 eax=f<XSAVEOPT,XSAVEC,XGETBV1,XSAVES>
> cpu0: cpuid 80000001 edx=2c100800<NXE,PAGE1GB,RDTSCP,LONG>
> ecx=121<LAHF,ABM,3DNOWP>
> cpu0: cpuid 80000007 edx=100<ITSC>
> cpu0: msr
> 10a=15c0fd6b<IBRS_ALL,SKIP_L1DFL,MDS_NO,IF_PSCHANGE,TAA_NO,MISC_PKG_CT,ENERGY_FILT,DOITM,SBDR_SSDP_N,FBSDP_NO,PSDP_NO,OVERCLOCK,PBRSB_NO,GDS_NO,RFDS_CLEAR>
> cpu0: 32KB 64b/line 8-way D-cache, 64KB 64b/line 8-way I-cache, 2MB
> 64b/line 16-way L2 cache, 6MB 64b/line 12-way L3 cache
> cpu0: smt 0, core 0, package 0, type E
> mtrr: Pentium Pro MTRR support, 10 var ranges, 88 fixed ranges
> cpu0: apic clock running at 38MHz
> cpu0: mwait min=64, max=64, C-substates=0.2.0.2.0.1.0.1, IBE
> cpu1 at mainbus0: apid 2 (application processor)
> cpu1: Intel(R) N95, 3392.18 MHz, 06-be-00, patch 00000021
> cpu1: smt 0, core 1, package 0, type E
> cpu2 at mainbus0: apid 4 (application processor)
> cpu2: Intel(R) N95, 2693.79 MHz, 06-be-00, patch 00000021
> cpu2: smt 0, core 2, package 0, type E
> cpu3 at mainbus0: apid 6 (application processor)
> cpu3: Intel(R) N95, 2693.79 MHz, 06-be-00, patch 00000021
> cpu3: smt 0, core 3, package 0, type E
> ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 120 pins
> acpimcfg0 at acpi0
> acpimcfg0: addr 0xc0000000, bus 0-255
> acpiprt0 at acpi0: bus 0 (PC00)
> acpiprt1 at acpi0: bus 33 (RP09)
> acpiprt2 at acpi0: bus 32 (RP10)
> acpiprt3 at acpi0: bus -1 (RP11)
> acpiprt4 at acpi0: bus -1 (RP12)
> acpiprt5 at acpi0: bus -1 (RP13)
> acpiprt6 at acpi0: bus -1 (RP14)
> acpiprt7 at acpi0: bus -1 (RP15)
> acpiprt8 at acpi0: bus -1 (RP16)
> acpiprt9 at acpi0: bus -1 (RP01)
> acpiprt10 at acpi0: bus -1 (RP02)
> acpiprt11 at acpi0: bus 1 (RP03)
> acpiprt12 at acpi0: bus 35 (RP04)
> acpiprt13 at acpi0: bus -1 (RP05)
> acpiprt14 at acpi0: bus -1 (RP06)
> acpiprt15 at acpi0: bus 34 (RP07)
> acpiprt16 at acpi0: bus -1 (RP08)
> acpiprt17 at acpi0: bus -1 (RP17)
> acpiprt18 at acpi0: bus -1 (RP18)
> acpiprt19 at acpi0: bus -1 (RP19)
> acpiprt20 at acpi0: bus -1 (RP20)
> acpiprt21 at acpi0: bus -1 (RP21)
> acpiprt22 at acpi0: bus -1 (RP22)
> acpiprt23 at acpi0: bus -1 (RP23)
> acpiprt24 at acpi0: bus -1 (RP24)
> acpiec0 at acpi0: not present
> acpipci0 at acpi0 PC00: 0x00000000 0x00000011 0x00000001
> com0 at acpi0 UAR1 addr 0x3f8/0x8 irq 4: ns16550a, 16 byte fifo
> "OVTI01AS" at acpi0 not configured
> "OVTID858" at acpi0 not configured
> "TXNW3643" at acpi0 not configured
> "TXNW3643" at acpi0 not configured
> "ACPI000E" at acpi0 not configured
> pchgpio0 at acpi0 GPI0 addr 0xfd6e0000/0x10000 0xfd6d0000/0x10000
> 0xfd6a0000/0x10000 0xfd690000/0x10000 irq 14, 384 pins
> acpibtn0 at acpi0: SLPB
> acpicpu0 at acpi0: C3(200@1048 mwait.1@0x60), C2(350@127 mwait.1@0x21),
> C1(1000@1 mwait.1), PSS
> acpicpu1 at acpi0: C3(200@1048 mwait.1@0x60), C2(350@127 mwait.1@0x21),
> C1(1000@1 mwait.1), PSS
> acpicpu2 at acpi0: C3(200@1048 mwait.1@0x60), C2(350@127 mwait.1@0x21),
> C1(1000@1 mwait.1), PSS
> acpicpu3 at acpi0: C3(200@1048 mwait.1@0x60), C2(350@127 mwait.1@0x21),
> C1(1000@1 mwait.1), PSS
> "PNP0C14" at acpi0 not configured
> "PNP0C14" at acpi0 not configured
> intelpmc0 at acpi0: PEPD
> state 0: 0x7f:1:2:0x00:0x0000000000000060
> counter: 0x7f:64:0:0x00:0x0000000000000632
> frequency: 0
> state 1: 0x7f:1:2:0x00:0x0000000000000060
> counter: 0x00:32:0:0x03:0x00000000fe00193c
> frequency: 8197
> "INTC1070" at acpi0 not configured
> acpibtn1 at acpi0: PWRB
> tpm0 at acpi0 TPM_ 2.0 (TIS) addr 0xfed40000/0x5000, device 0x001d15d1 rev
> 0x36
> acpipwrres0 at acpi0: WRST
> acpipwrres1 at acpi0: TBT0, resource for TDM0, TRP0, TRP1
> acpipwrres2 at acpi0: TBT1, resource for TDM1, TRP2, TRP3
> acpipwrres3 at acpi0: D3C_, resource for TXHC, TDM0, TDM1, TRP0, TRP1,
> TRP2, TRP3
> acpipwrres4 at acpi0: FN00
> acpipwrres5 at acpi0: FN01
> acpipwrres6 at acpi0: FN02
> acpipwrres7 at acpi0: FN03
> acpipwrres8 at acpi0: FN04
> acpitz0 at acpi0
> acpitz0: critical temperature is 110 degC
> acpipwrres9 at acpi0: PIN_
> acpivideo0 at acpi0: GFX0
> acpivout0 at acpivideo0: DD1F
> acpivout1 at acpivideo0: DD2F
> cpu0: using VERW MDS workaround
> cpu0: Enhanced SpeedStep 3392 MHz: speeds: 1701, 1700, 1600, 1500, 1400,
> 1300, 1200, 1100, 1000, 900, 800 MHz
> pci0 at mainbus0 bus 0
> 0:31:5: mem address conflict 0xfe010000/0x1000
> pchb0 at pci0 dev 0 function 0 vendor "Intel", unknown product 0x4618 rev
> 0x00
> inteldrm0 at pci0 dev 2 function 0 "Intel Graphics" rev 0x00
> drm0 at inteldrm0
> inteldrm0: msi, ALDERLAKE_P, gen 12
> "Intel ADL-N GNA" rev 0x00 at pci0 dev 8 function 0 not configured
> "Intel Core 12G CL" rev 0x01 at pci0 dev 10 function 0 not configured
> xhci0 at pci0 dev 13 function 0 "Intel ADL-N xHCI" rev 0x00: msi, xHCI 1.20
> usb0 at xhci0: USB revision 3.0
> uhub0 at usb0 configuration 1 interface 0 "Intel xHCI root hub" rev
> 3.00/1.00 addr 1
> xhci1 at pci0 dev 20 function 0 "Intel ADL-N xHCI" rev 0x00: msi, xHCI 1.20
> usb1 at xhci1: USB revision 3.0
> uhub1 at usb1 configuration 1 interface 0 "Intel xHCI root hub" rev
> 3.00/1.00 addr 1
> "Intel ADL-N SRAM" rev 0x00 at pci0 dev 20 function 2 not configured
> dwiic0 at pci0 dev 21 function 0 "Intel ADL-N I2C" rev 0x00: apic 2 int 27
> iic0 at dwiic0
> dwiic1 at pci0 dev 21 function 1 "Intel ADL-N I2C" rev 0x00: apic 2 int 40
> iic1 at dwiic1
> "Intel ADL-N HECI" rev 0x00 at pci0 dev 22 function 0 not configured
> ahci0 at pci0 dev 23 function 0 "Intel ADL-N AHCI" rev 0x00: msi, AHCI 1.3.1
> ahci0: port 0: 6.0Gb/s
> ahci0: PHY offline on port 1
> scsibus1 at ahci0: 32 targets
> sd0 at scsibus1 targ 0 lun 0: <ATA, Samsung SSD 860, RVT2>
> naa.5002538e3130b347
> sd0: 476940MB, 512 bytes/sector, 976773168 sectors, thin
> dwiic2 at pci0 dev 25 function 0 "Intel ADL-N I2C" rev 0x00: apic 2 int 31
> iic2 at dwiic2
> dwiic3 at pci0 dev 25 function 1 "Intel ADL-N I2C" rev 0x00: apic 2 int 32
> iic3 at dwiic3
> sdhc0 at pci0 dev 26 function 0 "Intel ADL-N eMMC" rev 0x00: apic 2 int 16
> sdhc0: SDHC 3.00, 200 MHz base clock
> sdmmc0 at sdhc0: 8-bit, sd high-speed, mmc high-speed, ddr52, dma
> ppb0 at pci0 dev 28 function 0 "Intel ADL-N PCIE" rev 0x00: msi
> pci1 at ppb0 bus 1
> "MediaTek MT7920" rev 0x00 at pci1 dev 0 function 0 not configured
> ppb1 at pci0 dev 28 function 3 "Intel ADL-N PCIE" rev 0x00: msi
> pci2 at ppb1 bus 35
> igc0 at pci2 dev 0 function 0 "Intel I226-V" rev 0x04, msix, 4 queues,
> address 38:f7:cd:d3:df:90
> ppb2 at pci0 dev 28 function 6 "Intel ADL-N PCIE" rev 0x00: msi
> pci3 at ppb2 bus 34
> igc1 at pci3 dev 0 function 0 "Intel I226-V" rev 0x04, msix, 4 queues,
> address 38:f7:cd:d9:13:e2
> ppb3 at pci0 dev 29 function 0 "Intel ADL-N PCIE" rev 0x00: msi
> pci4 at ppb3 bus 33
> igc2 at pci4 dev 0 function 0 "Intel I226-V" rev 0x04, msix, 4 queues,
> address 38:f7:cd:d9:13:dc
> ppb4 at pci0 dev 29 function 1 "Intel ADL-N PCIE" rev 0x00: msi
> pci5 at ppb4 bus 32
> igc3 at pci5 dev 0 function 0 "Intel I226-V" rev 0x04, msix, 4 queues,
> address 38:f7:cd:d9:13:dd
> "Intel ADL-N UART" rev 0x00 at pci0 dev 30 function 0 not configured
> "Intel ADL-N GSPI" rev 0x00 at pci0 dev 30 function 3 not configured
> pcib0 at pci0 dev 31 function 0 vendor "Intel", unknown product 0x5482 rev
> 0x00
> azalia0 at pci0 dev 31 function 3 "Intel ADL-N HD Audio" rev 0x00: msi
> azalia0: codecs: Realtek ALC269, 0x0000/0x0000, using Realtek ALC269
> audio0 at azalia0
> ichiic0 at pci0 dev 31 function 4 "Intel ADL-N SMBus" rev 0x00: apic 2 int
> 16
> iic4 at ichiic0
> iic4: addr 0x4a 15=2c 16=20 19=04 1b=05 1c=60 1e=60 1f=60 20=89 21=78 22=63
> 25=78 26=63 27=78 28=63 29=b0 2a=bb 2b=42 2c=20 2d=22 2e=04 2f=5a 32=80
> 34=0e 3b=04 3c=0b 3d=2a d8=10 words 00=0000 01=0000 02=0000 03=0000 04=0000
> 05=0000 06=0000 07=0000
> "eeprom" at iic4 addr 0x52 not configured
> "Intel ADL-N SPI" rev 0x00 at pci0 dev 31 function 5 not configured
> isa0 at pcib0
> isadma0 at isa0
> pcppi0 at isa0 port 0x61
> spkr0 at pcppi0
> vmm0 at mainbus0: VMX/EPT
> efifb at mainbus0 not configured
> enable mbufs in high memory
> scsibus2 at sdmmc0: 2 targets, initiator 0
> sd1 at scsibus2 targ 1 lun 0: <SD/MMC, C9A611, 0000> removable
> sd1: 59680MB, 512 bytes/sector, 122224640 sectors
> uhidev0 at uhub1 port 1 configuration 1 interface 0 "CHESEN PS2 to USB
> Converter" rev 1.10/0.10 addr 2
> uhidev0: iclass 3/1
> ukbd0 at uhidev0: 8 variable keys, 6 key codes
> wskbd0 at ukbd0: console keyboard
> uhidev1 at uhub1 port 1 configuration 1 interface 1 "CHESEN PS2 to USB
> Converter" rev 1.10/0.10 addr 2
> uhidev1: iclass 3/1, 3 report ids
> ums0 at uhidev1 reportid 1: 5 buttons, Z dir
> wsmouse0 at ums0 mux 0
> uhid0 at uhidev1 reportid 2: input=1, output=0, feature=0
> ucc0 at uhidev1 reportid 3: 5 usages, 4 keys, array
> wskbd1 at ucc0 mux 1
> uhidev2 at uhub1 port 3 configuration 1 interface 0 "YICHIP Wireless
> Device" rev 2.00/0.02 addr 3
> uhidev2: iclass 3/1
> ukbd1 at uhidev2: 8 variable keys, 6 key codes
> wskbd2 at ukbd1 mux 1
> uhidev3 at uhub1 port 3 configuration 1 interface 1 "YICHIP Wireless
> Device" rev 2.00/0.02 addr 3
> uhidev3: iclass 3/1, 3 report ids
> ums1 at uhidev3 reportid 1: 5 buttons, Z and W dir
> wsmouse1 at ums1 mux 0
> uhid1 at uhidev3 reportid 2: input=1, output=0, feature=0
> ucc1 at uhidev3 reportid 3: 897 usages, 20 keys, array
> wskbd3 at ucc1 mux 1
> ugen0 at uhub1 port 8 "MediaTek Inc. Wireless_Device" rev 2.10/1.00 addr 4
> vscsi0 at root
> scsibus3 at vscsi0: 256 targets
> softraid0 at root
> scsibus4 at softraid0: 256 targets
> root on sd0a (ba0a2c4309ee65cb.a) swap on sd0b dump on sd0b
> inteldrm0: 3440x1440, 32bpp
> wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation), using wskbd0
> wskbd1: connecting to wsdisplay0
> wskbd2: connecting to wsdisplay0
> wskbd3: connecting to wsdisplay0
> wsdisplay0: screen 1-5 added (std, vt100 emulation)
> arpresolve: 10.0.0.211: route contains no arp information
> 
> 
> -- 
> https://buzzdeee.reitenba.ch