On my laptop this is disabled via the BIOS.

Regards,
Mike Lockhart


-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf
Of Rich Dunkle
Sent: Thursday, December 21, 2006 3:47 PM
To: misc@openbsd.org
Subject: disable SpeedStep ?

How can I disable the SpeedStep feature in OpenBSD 4.0 ?
Is there something in UKC ?


The machine hangs during cpu0 checks:

-----8<----8<---------8<-----
>> OpenBSD/i386 BOOT 2.12
boot>
booting hd0a:/bsd: 5572500+869372 [52+284400+264825]=0x6aaea4
entry point at 0x200120,
[ using 549652 bytes of bsd ELF symbol table ]
Copyright (c) 1982, 1986, 1989, 1991, 1993
        The Regents of the University of
Copyright (c) 1995-2006 OpenBSD. All rights reserved.
http://www.OpenBSD.org

OpenBSD 4.0-current (GENERIC) #1288: Tue Dec 19 20:56:54 MST 2006
    [EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/GENERIC
RTC BIOS diagnostic error 80<clock_battery>
cpu0: Intel(R) Core(TM)2 Duo CPU X6800 @ 2.93GHz ("GenuineIntel"
686-class) 2.94
 GHz
cpu0:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,
CF
LUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,SSE3,MWAIT,DS-CPL,VMX,EST,T
M2,CX16
real mem  = 2144796672 (2094528K)
avail mem = 1948188672 (1902528K)
using 4256 buffers containing 107425792 bytes (104908K) of memory
RTC BIOS diagnostic error 80<clock_battery>
mainbus0 (root)
bios0 at mainbus0: AT/286+(00) BIOS, date 11/29/06, SMBIOS rev. 2.3 @
0xe4cc0 (3
5 entries)
bios0: Intel Corporation D975XBX
apm0 at bios0: Power Management spec V1.2
apm0: AC on, battery charge unknown, estimated 0:00 hours
apm0: flags 30102 dobusy 0 doidle 1
pcibios at bios0 function 0x1a not configured
bios0: ROM list: 0xc0000/0x10000 0xd0000/0x1000 0xd1000/0x1000
acpi at mainbus0 not configured
cpu0 at mainbus0
cpu0: unknown Enhanced SpeedStep CPU, msr 0x0b280b2886000b28
cpu0: using only highest and lowest power states
cpu0: Enhanced SpeedStep 2933 MHz (1340 mV)kernel: integer divide fault
trap, co
de=0
Stopped at      est_init+0x1de: idivl   %ecx,%eax
ddb>
-----8<----8<---------8<-----

I can get past this error if I lower the cpu frequency to 2.66GHz

-----8<----8<---------8<-----
Dec 21 11:45:59 drake038 /bsd: OpenBSD 4.0-current (GENERIC) #1288: Tue
Dec 19 20:56:54 MST 2006
Dec 21 11:45:59 drake038 /bsd:    
[EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/GENERIC
Dec 21 11:45:59 drake038 /bsd: RTC BIOS diagnostic error
80<clock_battery>
Dec 21 11:45:59 drake038 /bsd: cpu0: Intel(R) Core(TM)2 Duo CPU X6800 @
2.93GHz ("GenuineIntel" 686-class) 2.67 GHz
Dec 21 11:45:59 drake038 /bsd: cpu0:
FPU,V86,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,SBF,SSE3,MWAIT,DS-CPL,VMX,EST
,TM2,CX16
Dec 21 11:45:59 drake038 /bsd: real mem  = 2128441344 (2078556K)
Dec 21 11:45:59 drake038 /bsd: avail mem = 1933262848 (1887952K)
Dec 21 11:45:59 drake038 /bsd: using 4256 buffers containing 106586112
bytes (104088K) of memory
Dec 21 11:45:59 drake038 /bsd: RTC BIOS diagnostic error
80<clock_battery>
Dec 21 11:45:59 drake038 /bsd: mainbus0 (root)
Dec 21 11:45:59 drake038 /bsd: bios0 at mainbus0: AT/286+(00) BIOS, date
11/01/06, SMBIOS rev. 2.4 @ 0xe4390 (35 entries)
Dec 21 11:45:59 drake038 /bsd: bios0: Intel Corporation DG965WH
Dec 21 11:45:59 drake038 /bsd: apm0 at bios0: Power Management spec V1.2
Dec 21 11:45:59 drake038 /bsd: apm0: battery life expectancy 0%
Dec 21 11:45:59 drake038 /bsd: apm0: AC off, battery charge unknown,
estimated 0:00 hours
Dec 21 11:45:59 drake038 /bsd: apm0: flags 30102 dobusy 0 doidle 1
Dec 21 11:45:59 drake038 /bsd: pcibios at bios0 function 0x1a not
configured
Dec 21 11:45:59 drake038 /bsd: bios0: ROM list: 0xc0000/0xee00!
0xcf000/0x1000 0xd0000/0x1000
Dec 21 11:45:59 drake038 /bsd: acpi at mainbus0 not configured
Dec 21 11:45:59 drake038 /bsd: cpu0 at mainbus0
Dec 21 11:45:59 drake038 /bsd: cpu0: Enhanced SpeedStep disabled by BIOS
Dec 21 11:45:59 drake038 /bsd: pci0 at mainbus0 bus 0: configuration
mode
1 (no bios)
Dec 21 11:45:59 drake038 /bsd: pchb0 at pci0 dev 0 function 0 "Intel
82965
MCH" rev 0x02
Dec 21 11:45:59 drake038 /bsd: ppb0 at pci0 dev 1 function 0 "Intel
82965
PCIE" rev 0x02
Dec 21 11:45:59 drake038 /bsd: pci1 at ppb0 bus 1
Dec 21 11:45:59 drake038 /bsd: vga1 at pci1 dev 0 function 0 "NVIDIA
GeForce 6600" rev 0xa2
Dec 21 11:45:59 drake038 /bsd: wsdisplay0 at vga1 mux 1: console (80x25,
vt100 emulation)
Dec 21 11:45:59 drake038 /bsd: wsdisplay0: screen 1-5 added (80x25,
vt100
emulation)
Dec 21 11:45:59 drake038 /bsd: "Intel 82865 HECI" rev 0x02 at pci0 dev 3
function 0 not configured
Dec 21 11:45:59 drake038 /bsd: em0 at pci0 dev 25 function 0 "Intel ICH8
IGP C" rev 0x02: irq 9, address 00:16:76:a8:77:75
Dec 21 11:45:59 drake038 /bsd: uhci0 at pci0 dev 26 function 0 "Intel
82801H USB" rev 0x02: irq 11
Dec 21 11:45:59 drake038 /bsd: usb0 at uhci0: USB revision 1.0
Dec 21 11:45:59 drake038 /bsd: uhub0 at usb0
Dec 21 11:45:59 drake038 /bsd: uhub0: Intel UHCI root hub, rev
1.00/1.00,
addr 1
Dec 21 11:45:59 drake038 /bsd: uhub0: 2 ports with 2 removable, self
powered
Dec 21 11:45:59 drake038 /bsd: uhci1 at pci0 dev 26 function 1 "Intel
82801H USB" rev 0x02: irq 10
Dec 21 11:45:59 drake038 /bsd: usb1 at uhci1: USB revision 1.0
Dec 21 11:45:59 drake038 /bsd: uhub1 at usb1
Dec 21 11:45:59 drake038 /bsd: uhub1: Intel UHCI root hub, rev
1.00/1.00,
addr 1
Dec 21 11:45:59 drake038 /bsd: uhub1: 2 ports with 2 removable, self
powered
Dec 21 11:45:59 drake038 /bsd: ehci0 at pci0 dev 26 function 7 "Intel
82801H USB" rev 0x02: irq 11
Dec 21 11:45:59 drake038 /bsd: usb2 at ehci0: USB revision 2.0
Dec 21 11:45:59 drake038 /bsd: uhub2 at usb2
Dec 21 11:45:59 drake038 /bsd: uhub2: Intel EHCI root hub, rev
2.00/1.00,
addr 1
Dec 21 11:45:59 drake038 /bsd: uhub2: 4 ports with 4 removable, self
powered
Dec 21 11:45:59 drake038 /bsd: azalia0 at pci0 dev 27 function 0 "Intel
82801H HD Audio" rev 0x02: irq 9
Dec 21 11:45:59 drake038 /bsd: azalia0: host: High Definition Audio rev.
1.0
Dec 21 11:45:59 drake038 /bsd: azalia0: codec: 0x04x/0x8384 (rev. 2.1),
HDA version 1.0
Dec 21 11:45:59 drake038 /bsd: audio0 at azalia0
Dec 21 11:45:59 drake038 /bsd: ppb1 at pci0 dev 28 function 0 "Intel
82801H PCIE" rev 0x02
Dec 21 11:45:59 drake038 /bsd: pci2 at ppb1 bus 2
Dec 21 11:45:59 drake038 /bsd: ppb2 at pci0 dev 28 function 1 "Intel
82801H PCIE" rev 0x02
Dec 21 11:45:59 drake038 /bsd: pci3 at ppb2 bus 3
Dec 21 11:45:59 drake038 /bsd: pciide0 at pci3 dev 0 function 0 "Marvell
SATA" rev 0xb1: DMA (unsupported), channel 0 configured to native-PCI,
channel 1 configured to native-PCI
Dec 21 11:45:59 drake038 /bsd: pciide0: using irq 10 for native-PCI
interrupt
Dec 21 11:45:59 drake038 /bsd: pciide0: channel 0 ignored (not
responding;
disabled or no drives?)
Dec 21 11:45:59 drake038 /bsd: pciide0: channel 1 ignored (not
responding;
disabled or no drives?)
Dec 21 11:45:59 drake038 /bsd: ppb3 at pci0 dev 28 function 2 "Intel
82801H PCIE" rev 0x02
Dec 21 11:45:59 drake038 /bsd: pci4 at ppb3 bus 4
Dec 21 11:45:59 drake038 /bsd: ppb4 at pci0 dev 28 function 3 "Intel
82801H PCIE" rev 0x02
Dec 21 11:45:59 drake038 /bsd: pci5 at ppb4 bus 5
Dec 21 11:45:59 drake038 /bsd: ppb5 at pci0 dev 28 function 4 "Intel
82801H PCIE" rev 0x02
Dec 21 11:45:59 drake038 /bsd: pci6 at ppb5 bus 6
Dec 21 11:45:59 drake038 /bsd: uhci2 at pci0 dev 29 function 0 "Intel
82801H USB" rev 0x02: irq 11
Dec 21 11:45:59 drake038 /bsd: usb3 at uhci2: USB revision 1.0
Dec 21 11:45:59 drake038 /bsd: uhub3 at usb3
Dec 21 11:45:59 drake038 /bsd: uhub3: Intel UHCI root hub, rev
1.00/1.00,
addr 1
Dec 21 11:45:59 drake038 /bsd: uhub3: 2 ports with 2 removable, self
powered
Dec 21 11:45:59 drake038 /bsd: uhci3 at pci0 dev 29 function 1 "Intel
82801H USB" rev 0x02: irq 11
Dec 21 11:45:59 drake038 /bsd: usb4 at uhci3: USB revision 1.0
Dec 21 11:45:59 drake038 /bsd: uhub4 at usb4
Dec 21 11:45:59 drake038 /bsd: uhub4: Intel UHCI root hub, rev
1.00/1.00,
addr 1
Dec 21 11:45:59 drake038 /bsd: uhub4: 2 ports with 2 removable, self
powered
Dec 21 11:45:59 drake038 /bsd: uhci4 at pci0 dev 29 function 2 "Intel
82801H USB" rev 0x02: irq 11
Dec 21 11:45:59 drake038 /bsd: usb5 at uhci4: USB revision 1.0
Dec 21 11:45:59 drake038 /bsd: uhub5 at usb5
Dec 21 11:45:59 drake038 /bsd: uhub5: Intel UHCI root hub, rev
1.00/1.00,
addr 1
Dec 21 11:45:59 drake038 /bsd: uhub5: 2 ports with 2 removable, self
powered
Dec 21 11:45:59 drake038 /bsd: ehci1 at pci0 dev 29 function 7 "Intel
82801H USB" rev 0x02: irq 11
Dec 21 11:45:59 drake038 /bsd: usb6 at ehci1: USB revision 2.0
Dec 21 11:45:59 drake038 /bsd: uhub6 at usb6
Dec 21 11:45:59 drake038 /bsd: uhub6: Intel EHCI root hub, rev
2.00/1.00,
addr 1
Dec 21 11:45:59 drake038 /bsd: uhub6: 6 ports with 6 removable, self
powered
Dec 21 11:45:59 drake038 /bsd: ppb6 at pci0 dev 30 function 0 "Intel
82801BA AGP" rev 0xf2
Dec 21 11:45:59 drake038 /bsd: pci7 at ppb6 bus 7
Dec 21 11:45:59 drake038 /bsd: "TI TSB43AB22 FireWire" rev 0x00 at pci7
dev 3 function 0 not configured
Dec 21 11:45:59 drake038 /bsd: pcib0 at pci0 dev 31 function 0 vendor
"Intel", unknown product 0x2812 rev 0x02
Dec 21 11:45:59 drake038 /bsd: pciide1 at pci0 dev 31 function 2 "Intel
82801H SATA" rev 0x02: DMA, channel 0 configured to native-PCI, channel
1
configured to native-PCI
Dec 21 11:45:59 drake038 /bsd: pciide1: using irq 11 for native-PCI
interrupt
Dec 21 11:45:59 drake038 /bsd: wd0 at pciide1 channel 0 drive 0: <WDC
WD1200JD-00FYB0>
Dec 21 11:45:59 drake038 /bsd: wd0: 16-sector PIO, LBA48, 114473MB,
234441648 sectors
Dec 21 11:45:59 drake038 /bsd: wd0(pciide1:0:0): using PIO mode 4,
Ultra-DMA mode 5
Dec 21 11:45:59 drake038 /bsd: ichiic0 at pci0 dev 31 function 3 "Intel
82801H SMBus" rev 0x02: irq 10
Dec 21 11:45:59 drake038 /bsd: iic0 at ichiic0
Dec 21 11:45:59 drake038 /bsd: pciide2 at pci0 dev 31 function 5 "Intel
82801H SATA" rev 0x02: DMA, channel 0 wired to native-PCI, channel 1
wired
to native-PCI
Dec 21 11:45:59 drake038 /bsd: pciide2: using irq 11 for native-PCI
interrupt
Dec 21 11:45:59 drake038 /bsd: isa0 at pcib0
Dec 21 11:45:59 drake038 /bsd: isadma0 at isa0
Dec 21 11:45:59 drake038 /bsd: pckbc0 at isa0 port 0x60/5
Dec 21 11:45:59 drake038 /bsd: pckbd0 at pckbc0 (kbd slot)
Dec 21 11:45:59 drake038 /bsd: pckbc0: using irq 1 for kbd slot
Dec 21 11:45:59 drake038 /bsd: wskbd0 at pckbd0: console keyboard, using
wsdisplay0
Dec 21 11:45:59 drake038 /bsd: pmsi0 at pckbc0 (aux slot)
Dec 21 11:45:59 drake038 /bsd: pckbc0: using irq 12 for aux slot
Dec 21 11:45:59 drake038 /bsd: wsmouse0 at pmsi0 mux 0
Dec 21 11:45:59 drake038 /bsd: pcppi0 at isa0 port 0x61
Dec 21 11:45:59 drake038 /bsd: midi0 at pcppi0: <PC speaker>
Dec 21 11:46:00 drake038 /bsd: spkr0 at pcppi0
Dec 21 11:46:00 drake038 /bsd: lpt0 at isa0 port 0x378/4 irq 7
Dec 21 11:46:00 drake038 /bsd: npx0 at isa0 port 0xf0/16: reported by
CPUID; using exception 16
Dec 21 11:46:00 drake038 /bsd: pccom0 at isa0 port 0x3f8/8 irq 4:
ns16550a, 16 byte fifo
Dec 21 11:46:00 drake038 /bsd: fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
Dec 21 11:46:00 drake038 /bsd: fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2
head,
18 sec
Dec 21 11:46:00 drake038 /bsd: biomask ed6d netmask ef6d ttymask ffef
Dec 21 11:46:00 drake038 /bsd: pctr: 686-class user-level performance
counters enabled
Dec 21 11:46:00 drake038 /bsd: mtrr: Pentium Pro MTRR support
Dec 21 11:46:00 drake038 /bsd: dkcsum: wd0 matches BIOS drive 0x80
Dec 21 11:46:00 drake038 /bsd: root on wd0a
Dec 21 11:46:00 drake038 /bsd: rootdev=0x0 rrootdev=0x300 rawdev=0x302
Dec 21 11:45:59 drake038 savecore: no core dump
-----8<----8<---------8<-----

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