The Fans being on are related to ACPI in an off-hand way. Since you
haven't enabled ACPI, the computer's BIOS controls the fans (which is a
correct decision). The BIOS isn't as smart as ACPI, so it just cranks
the fans until the CPU gets below a certain heat threshold. With ACPI
(all of it, btw) enabled, then ACPI takes over control of the fans, and
dynamically adjusts them.
However, good news! You don't need to turn on ACPI if you don't want
to. Since you have Enhanced SpeedStep already, you can just enable CPU
scaling. `apmd -C` will automatically adjust the CPU to meet your
demand. Just reading email? The CPU will scale down to 600MHz.
Compiling OpenOffice.org? Scale back up to 1100. You can manually
adjust it via the hw.setperf sysctl, but I prefer letting apmd handle
it. Check the man page for apmd for details on what -C does, and to
enable it across reboots, add 'apmd_flags="-C"' to /etc/rc.conf.local.
When your CPU scales down to 600, the fans should slow down not long
after that. Additionally, this will dramatically increase your battery
life. I've gotten 2x battery life by scaling down the CPU to the
lowest setting.
On 2007 May 08 (Tue) at 15:09:10 +0200 (+0200), Pau Amaro-Seoane wrote:
:Hi,
:
:I am using openbsd 4.1 on a laptop FJS and I've noticed that the fans are
:spinning basically all the time. I would of course prefere a quit laptop but I
:guess this is related to acpi, even if there's been a quite impressive
:breakthrough recently in obsd.
:
:It's not that I cannot bear it, mine is rather a more novice question regarding
:hardware... "Is it bad for the laptop? Does it mean the the cpu is hotter in
:obsd?" I cannot tell because apm is not working. But acpi shows the five
:different steps for SpeedStep...
:
:I guess that all the time spinning fans are better than silent fans and a melt
:cpu... but I'm just asking.
:
:Cheers,
:
:Pau
:
:Here you are my dmesg:
:
:OpenBSD 4.1 (GENERIC) #1435: Sat Mar 10 19:07:45 MST 2007
: [EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/GENERIC
:cpu0: Intel(R) Pentium(R) M processor 1.10GHz ("GenuineIntel" 686-class) 1.11
GHz
:cpu0:
FPU,V86,DE,PSE,TSC,MSR,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,TM,SBF,EST,TM2
:real mem = 1063809024 (1038876K)
:avail mem = 963268608 (940692K)
:using 4278 buffers containing 53313536 bytes (52064K) of memory
:mainbus0 (root)
:bios0 at mainbus0: AT/286+ BIOS, date 09/01/04, BIOS32 rev. 0 @ 0xfd720,
SMBIOS rev. 2.3 @ 0xe8100 (43 entries)
:bios0: FUJITSU SIEMENS 0000000000
:pcibios0 at bios0: rev 2.1 @ 0xfd720/0x8e0
:pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfdf40/160 (8 entries)
:pcibios0: PCI Interrupt Router at 000:31:0 ("Intel 82371FB ISA" rev 0x00)
:pcibios0: PCI bus #3 is the last bus
:bios0: ROM list: 0xc0000/0xd200! 0xdc000/0x4000!
:acpi at mainbus0 not configured
:cpu0 at mainbus0
:cpu0: Enhanced SpeedStep 1100 MHz (940 mV): speeds: 1100, 1000, 900, 800, 600
MHz
:pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
:pchb0 at pci0 dev 0 function 0 "Intel 82852GM Hub-PCI" rev 0x02
:"Intel 82852GM Memory" rev 0x02 at pci0 dev 0 function 1 not configured
:"Intel 82852GM Configuration" rev 0x02 at pci0 dev 0 function 3 not configured
:vga1 at pci0 dev 2 function 0 "Intel 82852GM AGP" rev 0x02: aperture at
0xd8000000, size 0x8000000
:wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
:wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
:"Intel 82852GM AGP" rev 0x02 at pci0 dev 2 function 1 not configured
:uhci0 at pci0 dev 29 function 0 "Intel 82801DB USB" rev 0x03: irq 11
:usb0 at uhci0: USB revision 1.0
:uhub0 at usb0
:uhub0: Intel UHCI root hub, rev 1.00/1.00, addr 1
:uhub0: 2 ports with 2 removable, self powered
:uhci1 at pci0 dev 29 function 1 "Intel 82801DB USB" rev 0x03: irq 11
:usb1 at uhci1: USB revision 1.0
:uhub1 at usb1
:uhub1: Intel UHCI root hub, rev 1.00/1.00, addr 1
:uhub1: 2 ports with 2 removable, self powered
:ehci0 at pci0 dev 29 function 7 "Intel 82801DB USB" rev 0x03: irq 11
:usb2 at ehci0: USB revision 2.0
:uhub2 at usb2
:uhub2: Intel EHCI root hub, rev 2.00/1.00, addr 1
:uhub2: 4 ports with 4 removable, self powered
:ppb0 at pci0 dev 30 function 0 "Intel 82801BAM Hub-to-PCI" rev 0x83
:pci1 at ppb0 bus 1
:cbb0 at pci1 dev 10 function 0 "Ricoh 5C476 CardBus" rev 0xab: irq 11
:cbb1 at pci1 dev 10 function 1 "Ricoh 5C476 CardBus" rev 0xab: irq 11
:"Ricoh 5C552 Firewire" rev 0x03 at pci1 dev 10 function 2 not configured
:vendor "Ricoh", unknown product 0x0576 (class system subclass miscellaneous,
rev 0x01) at pci1 dev 10 function 3 not configured
:"Ricoh 5C592 Memory Stick" rev 0x00 at pci1 dev 10 function 4 not configured
:rl0 at pci1 dev 12 function 0 "Realtek 8139" rev 0x10: irq 11, address
00:0b:5d:8c:e2:0d
:rlphy0 at rl0 phy 0: RTL internal PHY
:iwi0 at pci1 dev 13 function 0 "Intel PRO/Wireless 2200BG" rev 0x05: irq 11,
address 00:0e:35:83:08:f2
:cardslot0 at cbb0 slot 0 flags 0
:cardbus0 at cardslot0: bus 2 device 0 cacheline 0x0, lattimer 0x20
:pcmcia0 at cardslot0
:cardslot1 at cbb1 slot 1 flags 0
:cardbus1 at cardslot1: bus 3 device 0 cacheline 0x0, lattimer 0x20
:pcmcia1 at cardslot1
:ichpcib0 at pci0 dev 31 function 0 "Intel 82801DBM LPC" rev 0x03
:pciide0 at pci0 dev 31 function 1 "Intel 82801DBM IDE" rev 0x03: DMA, channel
0 configured to compatibility, channel 1 configured to compatibility
:wd0 at pciide0 channel 0 drive 0: <FUJITSU MHT2080AH>
:wd0: 16-sector PIO, LBA, 76319MB, 156301488 sectors
:wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 5
:pciide0: channel 1 ignored (disabled)
:ichiic0 at pci0 dev 31 function 3 "Intel 82801DB SMBus" rev 0x03: irq 11
:iic0 at ichiic0
:auich0 at pci0 dev 31 function 5 "Intel 82801DB AC97" rev 0x03: irq 11, ICH4
AC97
:ac97: codec id 0x414c4770 (Avance Logic ALC203 rev 0)
:ac97: codec features headphone, 20 bit DAC, 18 bit ADC, No 3D Stereo
:audio0 at auich0
:"Intel 82801DB Modem" rev 0x03 at pci0 dev 31 function 6 not configured
:isa0 at ichpcib0
:isadma0 at isa0
: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
:pcppi0 at isa0 port 0x61
:midi0 at pcppi0: <PC speaker>
:spkr0 at pcppi0
:npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
:biomask effd netmask effd ttymask ffff
:pctr: 686-class user-level performance counters enabled
:mtrr: Pentium Pro MTRR support
:dkcsum: wd0 matches BIOS drive 0x80
:root on wd0a
:rootdev=0x0 rrootdev=0x300 rawdev=0x302
:auich0: measured ac97 link rate at 48009 Hz, will use 48000 Hz
:
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:
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