Hi, I have installed 5.2-release on an old Latitude C640 and the dmesg reports the following (full dmesg attached):
... acpicpu0 at acpi0acpicpu0: struck PSS entry, core frequency equals last acpicpu0: struck PSS entry, core frequency equals last acpicpu0: invalid _PSS length : C2 ... And yes there is fun and games with CPU frequency control. I can't get the reported frequency above 1.2GHz as reported by apm and sysctl.hw: root:97# apm -H root:98# apm Battery state: high, 84% remaining, 149 minutes life estimate A/C adapter state: not connected Performance adjustment mode: manual (1197 MHz) root:99# sysctl hw.cpuspeed hw.setperf hw.cpuspeed=1197 hw.setperf=100 root:100# apm -L root:101# apm Battery state: high, 84% remaining, 149 minutes life estimate A/C adapter state: not connected Performance adjustment mode: manual (143 MHz) I have tried various BIOS settings for the CPU - maximum battery, maximum performance, automatic etc. Being on AC or battery makes no difference either. Doing a kernel build to put a load on the CPU also doesn't budge it above the reported 1.2GHz. Do the two extremes in fact map to 1.2 and 2.0 GHz? Any bashes with clue bat? Given its age is it worth it? The machine is clean (base install and a couple of packages only) and intended for tracking current so I can try out patches. TTFN -- Mike OpenBSD 5.2 (GENERIC) #278: Wed Aug 1 10:04:16 MDT 2012 dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC cpu0: Mobile Intel(R) Pentium(R) 4 - M CPU 2.00GHz ("GenuineIntel" 686-class) 2 GHz cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,CNXT-ID real mem = 536285184 (511MB) avail mem = 516661248 (492MB) mainbus0 at root bios0 at mainbus0: AT/286+ BIOS, date 01/12/04, BIOS32 rev. 0 @ 0xffe90, SMBIOS rev. 2.3 @ 0xf76a0 (61 entries) bios0: vendor Dell Computer Corporation version "A10" date 01/12/2004 bios0: Dell Computer Corporation Latitude C640 acpi0 at bios0: rev 0 acpi0: sleep states S0 S1 S3 S4 S5 acpi0: tables DSDT FACP acpi0: wakeup devices LID_(S3) PBTN(S4) PCI0(S3) UAR1(S3) USB0(S1) USB1(S1) USB2(S1) MODM(S3) PCIE(S3) MPCI(S3) acpitimer0 at acpi0: 3579545 Hz, 24 bits acpiprt0 at acpi0: bus 0 (PCI0) acpiprt1 at acpi0: bus 1 (AGP_) acpiprt2 at acpi0: bus 2 (PCIE) acpiprt3 at acpi0: bus -1 (MPCI) acpicpu0 at acpi0acpicpu0: struck PSS entry, core frequency equals last acpicpu0: struck PSS entry, core frequency equals last acpicpu0: invalid _PSS length : C2 acpipwrres0 at acpi0: PADA acpitz0 at acpi0: critical temperature is 99 degC acpiac0 at acpi0: AC unit online acpibat0 at acpi0: BAT0 model "4460" serial 888 type LION oem "Panasonic" acpibat1 at acpi0: BAT1 not present acpibtn0 at acpi0: LID_ acpibtn1 at acpi0: PBTN acpibtn2 at acpi0: SBTN acpidock0 at acpi0: GDCK not docked (0) acpivideo0 at acpi0: VID_ bios0: ROM list: 0xc0000/0xf000 0xcf000/0x800! 0xcf800/0x800! cpu0 at mainbus0: (uniprocessor) pci0 at mainbus0 bus 0: configuration mode 1 (bios) pchb0 at pci0 dev 0 function 0 "Intel 82845 Host" rev 0x04 intelagp0 at pchb0 agp0 at intelagp0: aperture at 0xe8000000, size 0x4000000 ppb0 at pci0 dev 1 function 0 "Intel 82845 AGP" rev 0x04 pci1 at ppb0 bus 1 vga1 at pci1 dev 0 function 0 "ATI Radeon Mobility M7" rev 0x00 wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation) wsdisplay0: screen 1-5 added (80x25, vt100 emulation) radeondrm0 at vga1: irq 11 drm0 at radeondrm0 uhci0 at pci0 dev 29 function 0 "Intel 82801CA/CAM USB" rev 0x02: irq 11 ppb1 at pci0 dev 30 function 0 "Intel 82801BAM Hub-to-PCI" rev 0x42 pci2 at ppb1 bus 2 xl0 at pci2 dev 0 function 0 "3Com 3c905C 100Base-TX" rev 0x78: irq 11, address 00:0b:db:a4:34:4b exphy0 at xl0 phy 24: 3Com internal media interface cbb0 at pci2 dev 1 function 0 "TI PCI1420 CardBus" rev 0x00: irq 11 cbb1 at pci2 dev 1 function 1 "TI PCI1420 CardBus" rev 0x00: irq 11 cardslot0 at cbb0 slot 0 flags 0 cardbus0 at cardslot0: bus 4 device 0 cacheline 0x8, lattimer 0x20 pcmcia0 at cardslot0 cardslot1 at cbb1 slot 1 flags 0 cardbus1 at cardslot1: bus 5 device 0 cacheline 0x8, lattimer 0x20 pcmcia1 at cardslot1 ichpcib0 at pci0 dev 31 function 0 "Intel 82801CAM LPC" rev 0x02 pciide0 at pci0 dev 31 function 1 "Intel 82801CAM IDE" rev 0x02: DMA, channel 0 configured to compatibility, channel 1 configured to compatibility wd0 at pciide0 channel 0 drive 0: <IC25N040ATCS05-0> wd0: 16-sector PIO, LBA, 38154MB, 78140160 sectors wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 5 atapiscsi0 at pciide0 channel 1 drive 0 scsibus0 at atapiscsi0: 2 targets cd0 at scsibus0 targ 0 lun 0: <TOSHIBA, DVD-ROM SD-C2612, 1D23> ATAPI 5/cdrom removable cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2 auich0 at pci0 dev 31 function 5 "Intel 82801CA/CAM AC97" rev 0x02: irq 11, ICH3 AC97 ac97: codec id 0x4352595b (Cirrus Logic CS4205 rev 3) ac97: codec features mic channel, tone, simulated stereo, bass boost, 20 bit DAC, 18 bit ADC, SRS 3D audio0 at auich0 "Intel 82801CA/CAM Modem" rev 0x02 at pci0 dev 31 function 6 not configured usb0 at uhci0: USB revision 1.0 uhub0 at usb0 "Intel UHCI root hub" rev 1.00/1.00 addr 1 isa0 at ichpcib0 isadma0 at isa0 com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo pckbc0 at isa0 port 0x60/5 pckbd0 at pckbc0 (kbd slot) pckbc0: using irq 1 for kbd slot wskbd0 at pckbd0: console keyboard, using wsdisplay0 pms0 at pckbc0 (aux slot) pckbc0: using irq 12 for aux slot wsmouse0 at pms0 mux 0 wsmouse1 at pms0 mux 0 pms0: Synaptics touchpad, firmware 5.9 pcppi0 at isa0 port 0x61 spkr0 at pcppi0 lpt0 at isa0 port 0x378/4 irq 7 npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16 fdc0 at isa0 port 0x3f0/6 irq 6 drq 2 mtrr: Pentium Pro MTRR support vscsi0 at root scsibus1 at vscsi0: 256 targets softraid0 at root scsibus2 at softraid0: 256 targets root on wd0a (5c197a91cae78d13.a) swap on wd0b dump on wd0b