A quick power management question ...

Sat, 18 Oct 2025 02:57:53 -0700 



I have an older laptop that I want to repurpose for another task that 
does not require a screen to be seen.



OK, I have all the programs loaded up, but when I close the lid on the 
laptop, the screen goes dark (as wanted), but then the notebook goes to 
sleep (which I do not want).  I want the notebook to remain an achieve 
processing unit, though with the screen turned off.


I see nothing in the BIOS settings that might encourage such behavior.


Looking at the man page for atm yields little more than question marks 
in my brain.


So, my simple question is:


How do I disable the ~going to sleep~ on a laptop when I close the lid?

Items that may be of interest ...

This is a basic OpenBSD command-line install, no window manager stuff.

Just yer basic OpenBSD command-line mode.

And the important dmesg ...

(thx in advance)



OpenBSD 7.7 (GENERIC.MP) #625: Sun Apr 13 08:30:20 MDT 2025
    [email protected]:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 4165603328 (3972MB)
avail mem = 4012908544 (3827MB)
random: good seed from bootblocks
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.4 @ 0xe0010 (80 entries)
bios0: vendor LENOVO version "[redacted] (3.24 )" date 10/17/2012
bios0: LENOVO 6475DQ3
acpi0 at bios0: ACPI 3.0
acpi0: sleep states S0 S3 S4 S5

acpi0: tables DSDT FACP SSDT ECDT APIC MCFG HPET SLIC BOOT ASF! SSDT 
TCPA DMAR SSDT SSDT SSDT
acpi0: wakeup devices LID_(S3) SLPB(S3) IGBE(S4) EXP0(S4) EXP1(S4) 
EXP2(S4) EXP3(S4) EXP4(S4) PCI1(S4) USB0(S3) USB3(S3) USB5(S3) EHC0(S3) 
EHC1(S3) HDEF(S4)

acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpiec0 at acpi0
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)

cpu0: Intel(R) Core(TM)2 Duo CPU P8400 @ 2.26GHz, 1596.14 MHz, 06-17-0a, 
patch 00000a0c
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=408e3fd<SSE3,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,XSAVE>

cpu0: cpuid 6 eax=1<SENSOR> ecx=3<EFFFREQ>
cpu0: cpuid a vers=2, gp=2, gpwidth=40, ff=3, ffwidth=40
cpu0: cpuid 80000001 edx=20100800<NXE,LONG> ecx=1<LAHF>
cpu0: MELTDOWN

cpu0: 32KB 64b/line 8-way D-cache, 32KB 64b/line 8-way I-cache, 3MB 
64b/line 12-way L2 cache

cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 7 var ranges, 88 fixed ranges
cpu0: apic clock running at 266MHz
cpu0: mwait min=64, max=64, C-substates=0.2.2.2.2.1.3, IBE
cpu1 at mainbus0: apid 1 (application processor)

cpu1: Intel(R) Core(TM)2 Duo CPU P8400 @ 2.26GHz, 1596.14 MHz, 06-17-0a, 
patch 00000a0c

cpu1: smt 0, core 1, package 0
ioapic0 at mainbus0: apid 1 pa 0xfec00000, version 20, 24 pins, remapped
acpimcfg0 at acpi0
acpimcfg0: addr 0xe0000000, bus 0-63
acpihpet0 at acpi0: 14318179 Hz
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus -1 (AGP_)
acpiprt2 at acpi0: bus 2 (EXP0)
acpiprt3 at acpi0: bus 3 (EXP1)
acpiprt4 at acpi0: bus -1 (EXP2)
acpiprt5 at acpi0: bus 5 (EXP3)
acpiprt6 at acpi0: bus 13 (EXP4)
acpiprt7 at acpi0: bus 21 (PCI1)
acpibtn0 at acpi0: LID_(wakeup)
acpibtn1 at acpi0: SLPB(wakeup)
acpipci0 at acpi0 PCI0: 0x00000000 0x00000011 0x00000001
acpicmos0 at acpi0
"PNP0303" at acpi0 not configured
"IBM0057" at acpi0 not configured

tpm0 at acpi0 TPM_ 1.2 (TIS) addr 0xfed40000/0x5000, device 0x10208086 
rev 0x6
acpibat0 at acpi0: BAT0 model "42T4678" serial  [redacted] type LION oem 
"Panasonic"

acpiac0 at acpi0: AC unit online
acpithinkpad0 at acpi0: version 1.0
"PNP0C14" at acpi0 not configured
acpicpu0 at acpi0: !C2(500@1 mwait.1@0x10), C1(1000@1 mwait.1)
acpicpu1 at acpi0: !C2(500@1 mwait.1@0x10), C1(1000@1 mwait.1)
acpipwrres0 at acpi0: PUBS, resource for USB0, USB3, USB5, EHC0, EHC1
acpitz0 at acpi0
acpitz0: critical temperature is 127 degC
acpitz1 at acpi0
acpitz1: critical temperature is 100 degC
acpidock0 at acpi0: GDCK not docked (0)
acpivideo0 at acpi0: VID_
acpivout0 at acpivideo0: LCD0
acpivideo1 at acpi0: VID_
cpu0: unknown Enhanced SpeedStep CPU, msr 0x0617482206000617
cpu0: using only highest and lowest power states
cpu0: Enhanced SpeedStep 1596 MHz: speeds: 19200, 1600 MHz
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel GM45 Host" rev 0x07
inteldrm0 at pci0 dev 2 function 0 "Intel GM45 Video" rev 0x07
drm0 at inteldrm0
intagp0 at inteldrm0
agp0 at intagp0: aperture at 0xd0000000, size 0x10000000
inteldrm0: apic 1 int 16, GM45, gen 4
"Intel GM45 Video" rev 0x07 at pci0 dev 2 function 1 not configured
"Intel GM45 HECI" rev 0x07 at pci0 dev 3 function 0 not configured

em0 at pci0 dev 25 function 0 "Intel ICH9 IGP M AMT" rev 0x03: msi, 
address [redacted]

uhci0 at pci0 dev 26 function 0 "Intel 82801I USB" rev 0x03: apic 1 int 20
uhci1 at pci0 dev 26 function 1 "Intel 82801I USB" rev 0x03: apic 1 int 21
uhci2 at pci0 dev 26 function 2 "Intel 82801I USB" rev 0x03: apic 1 int 22
ehci0 at pci0 dev 26 function 7 "Intel 82801I USB" rev 0x03: apic 1 int 23
usb0 at ehci0: USB revision 2.0

uhub0 at usb0 configuration 1 interface 0 "Intel EHCI root hub" rev 
2.00/1.00 addr 1

azalia0 at pci0 dev 27 function 0 "Intel 82801I HD Audio" rev 0x03: msi
azalia0: codecs: Conexant CX20561
audio0 at azalia0
ppb0 at pci0 dev 28 function 0 "Intel 82801I PCIE" rev 0x03: msi
pci1 at ppb0 bus 2
ppb1 at pci0 dev 28 function 1 "Intel 82801I PCIE" rev 0x03: msi
pci2 at ppb1 bus 3

iwn0 at pci2 dev 0 function 0 "Intel WiFi Link 5100" rev 0x00: msi, MIMO 
1T2R, MoW, address 00:26:c6:39:a7:84

ppb2 at pci0 dev 28 function 3 "Intel 82801I PCIE" rev 0x03: msi
pci3 at ppb2 bus 5
ppb3 at pci0 dev 28 function 4 "Intel 82801I PCIE" rev 0x03: msi
pci4 at ppb3 bus 13
uhci3 at pci0 dev 29 function 0 "Intel 82801I USB" rev 0x03: apic 1 int 16
uhci4 at pci0 dev 29 function 1 "Intel 82801I USB" rev 0x03: apic 1 int 17
uhci5 at pci0 dev 29 function 2 "Intel 82801I USB" rev 0x03: apic 1 int 18
ehci1 at pci0 dev 29 function 7 "Intel 82801I USB" rev 0x03: apic 1 int 19
usb1 at ehci1: USB revision 2.0

uhub1 at usb1 configuration 1 interface 0 "Intel EHCI root hub" rev 
2.00/1.00 addr 1

ppb4 at pci0 dev 30 function 0 "Intel 82801BAM Hub-to-PCI" rev 0x93
pci5 at ppb4 bus 21
cbb0 at pci5 dev 0 function 0 "Ricoh 5C476 CardBus" rev 0xba: apic 1 int 16
"Ricoh 5C832 Firewire" rev 0x04 at pci5 dev 0 function 1 not configured
cardslot0 at cbb0 slot 0 flags 0
cardbus0 at cardslot0: bus 22 device 0 cacheline 0x10, lattimer 0xb0
pcmcia0 at cardslot0
pcib0 at pci0 dev 31 function 0 "Intel 82801IEM LPC" rev 0x03
ahci0 at pci0 dev 31 function 2 "Intel 82801I AHCI" rev 0x03: msi, AHCI 1.2
ahci0: port 0: 3.0Gb/s
ahci0: port 1: 1.5Gb/s
scsibus1 at ahci0: 32 targets

sd0 at scsibus1 targ 0 lun 0: <ATA, WDC WD5000LPLX-0, 05.0> 
naa.50014ee65e43cf9e

sd0: 476940MB, 512 bytes/sector, 976773168 sectors
cd0 at scsibus1 targ 1 lun 0: <HL-DT-ST, DVD-ROM DU10N, 1.03> removable

ichiic0 at pci0 dev 31 function 3 "Intel 82801I SMBus" rev 0x03: apic 1 
int 23

iic0 at ichiic0
usb2 at uhci0: USB revision 1.0

uhub2 at usb2 configuration 1 interface 0 "Intel UHCI root hub" rev 
1.00/1.00 addr 1

usb3 at uhci1: USB revision 1.0

uhub3 at usb3 configuration 1 interface 0 "Intel UHCI root hub" rev 
1.00/1.00 addr 1

usb4 at uhci2: USB revision 1.0

uhub4 at usb4 configuration 1 interface 0 "Intel UHCI root hub" rev 
1.00/1.00 addr 1

usb5 at uhci3: USB revision 1.0

uhub5 at usb5 configuration 1 interface 0 "Intel UHCI root hub" rev 
1.00/1.00 addr 1

usb6 at uhci4: USB revision 1.0

uhub6 at usb6 configuration 1 interface 0 "Intel UHCI root hub" rev 
1.00/1.00 addr 1

usb7 at uhci5: USB revision 1.0

uhub7 at usb7 configuration 1 interface 0 "Intel UHCI root hub" rev 
1.00/1.00 addr 1

isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5 irq 1 irq 12
pckbd0 at pckbc0 (kbd slot)
wskbd0 at pckbd0: console keyboard
pms0 at pckbc0 (aux slot)
wsmouse0 at pms0 mux 0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
aps0 at isa0 port 0x1600/31

uhidev0 at uhub2 port 1 configuration 1 interface 0 "PC Sensors TEMPer 
sensor" rev 1.10/0.00 addr 2

uhidev0: iclass 3/1
ukbd0 at uhidev0: 8 variable keys, 6 key codes
wskbd1 at ukbd0 mux 1

uhidev1 at uhub2 port 1 configuration 1 interface 1 "PC Sensors TEMPer 
sensor" rev 1.10/0.00 addr 2

uhidev1: iclass 3/1
ugold0 at uhidev1
vscsi0 at root
scsibus2 at vscsi0: 256 targets
softraid0 at root
scsibus3 at softraid0: 256 targets
root on sd0a (d8169cb126bb94e0.a) swap on sd0b dump on sd0b

ugold0: "TEMPerX_V3.3    ", 2 sensors type temperx (temperature and 
humidity)

inteldrm0: 1280x800, 32bpp
wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation), using wskbd0
wskbd1: connecting to wsdisplay0
wsdisplay0: screen 1-5 added (std, vt100 emulation)
wskbd1: disconnecting from wsdisplay0
wskbd1 detached
ukbd0 detached
uhidev0 detached
ugold0 detached
uhidev1 detached
uhub2 detached
uhub3 detached
uhub4 detached
uhub0 detached
uhub5 detached
uhub6 detached
uhub7 detached
uhub1 detached

uhub0 at usb2 configuration 1 interface 0 "Intel UHCI root hub" rev 
1.00/1.00 addr 1
uhub1 at usb3 configuration 1 interface 0 "Intel UHCI root hub" rev 
1.00/1.00 addr 1
uhub2 at usb4 configuration 1 interface 0 "Intel UHCI root hub" rev 
1.00/1.00 addr 1
uhub3 at usb0 configuration 1 interface 0 "Intel EHCI root hub" rev 
2.00/1.00 addr 1
uhub4 at usb5 configuration 1 interface 0 "Intel UHCI root hub" rev 
1.00/1.00 addr 1
uhub5 at usb6 configuration 1 interface 0 "Intel UHCI root hub" rev 
1.00/1.00 addr 1
uhub6 at usb7 configuration 1 interface 0 "Intel UHCI root hub" rev 
1.00/1.00 addr 1
uhub7 at usb1 configuration 1 interface 0 "Intel EHCI root hub" rev 
2.00/1.00 addr 1

wakeups: 0 1
wakeup event: unknown
























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