Hello there, I'm trying to reduce power consumption on my OpenBSD laptop, and I can't find the way to suspend some USB devices I never use (like the webcam and the DVD drive).
Does anybody know a way to do this from userland? If not, is it possible to do it with some coding? thanks! luis I attach dmesg: OpenBSD 5.6 (GENERIC) #310: Fri Aug 8 00:14:24 MDT 2014 dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC RTC BIOS diagnostic error 80<clock_battery> real mem = 8469327872 (8076MB) avail mem = 8235134976 (7853MB) mpath0 at root scsibus0 at mpath0: 256 targets mainbus0 at root bios0 at mainbus0: SMBIOS rev. 2.7 @ 0xe6fd0 (61 entries) bios0: vendor LENOVO version "78CN24WW(V2.02)" date 09/23/2013 bios0: LENOVO 20236 acpi0 at bios0: rev 2 acpi0: sleep states S0 S3 S4 S5 acpi0: tables DSDT FACP SLIC UEFI ASF! HPET APIC MCFG SSDT BOOT ASPT DBGP FPDT MSDM SSDT SSDT acpi0: wakeup devices P0P1(S0) EHC1(S3) EHC2(S3) XHC_(S3) HDEF(S0) PXSX(S3) PXSX(S3) PXSX(S3) PXSX(S3) PXSX(S3) RP05(S0) PXSX(S3) RP06(S0) PXSX(S3) RP07(S0) PXSX(S3) [...] acpitimer0 at acpi0: 3579545 Hz, 24 bits acpihpet0 at acpi0: 14318179 Hz acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) cpu0: Intel(R) Core(TM) i7-3612QM CPU @ 2.10GHz, 2095.53 MHz cpu0: 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,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS cpu0: 256KB 64b/line 8-way L2 cache cpu0: smt 0, core 0, package 0 mtrr: Pentium Pro MTRR support, 10 var ranges, 88 fixed ranges cpu0: apic clock running at 99MHz cpu at mainbus0: not configured cpu at mainbus0: not configured cpu at mainbus0: not configured cpu at mainbus0: not configured cpu at mainbus0: not configured cpu at mainbus0: not configured cpu at mainbus0: not configured ioapic0 at mainbus0: apid 0 pa 0xfec00000, version 20, 24 pins acpimcfg0 at acpi0 addr 0xf0000000, bus 0-63 acpiprt0 at acpi0: bus 0 (PCI0) acpiprt1 at acpi0: bus -1 (P0P1) acpiprt2 at acpi0: bus 1 (RP01) acpiprt3 at acpi0: bus 2 (RP02) acpiprt4 at acpi0: bus -1 (RP03) acpiprt5 at acpi0: bus -1 (RP04) acpiprt6 at acpi0: bus -1 (RP05) acpiprt7 at acpi0: bus -1 (RP06) acpiprt8 at acpi0: bus -1 (RP07) acpiprt9 at acpi0: bus -1 (RP08) acpiprt10 at acpi0: bus -1 (PEG0) acpiprt11 at acpi0: bus -1 (PEG1) acpiprt12 at acpi0: bus -1 (PEG2) acpiprt13 at acpi0: bus -1 (PEG3) acpiec0 at acpi0 acpicpu0 at acpi0: C3, C2, C1, PSS acpitz0 at acpi0: critical temperature is 127 degC acpibtn0 at acpi0: PWRB acpibat0 at acpi0: BAT1 model "PABAS0241231" serial 41167 type Li-Ion oem "LENOVO " acpiac0 at acpi0: AC unit offline acpibtn1 at acpi0: LID0 acpivideo0 at acpi0: VGA_ acpivideo1 at acpi0: VGA_ acpivideo2 at acpi0: GFX0 acpivout0 at acpivideo2: DD02 cpu0: Enhanced SpeedStep 2095 MHz: speeds: 2101, 2100, 2000, 1900, 1800, 1700, 1600, 1500, 1400, 1300, 1200 MHz pci0 at mainbus0 bus 0 pchb0 at pci0 dev 0 function 0 "Intel Core 3G Host" rev 0x09 vga1 at pci0 dev 2 function 0 "Intel HD Graphics 4000" rev 0x09 intagp at vga1 not configured inteldrm0 at vga1 drm0 at inteldrm0 drm: Memory usable by graphics device = 2048M inteldrm0: 1366x768 wsdisplay0 at vga1 mux 1: console (std, vt100 emulation) wsdisplay0: screen 1-5 added (std, vt100 emulation) "Intel 7 Series xHCI" rev 0x04 at pci0 dev 20 function 0 not configured "Intel 7 Series MEI" rev 0x04 at pci0 dev 22 function 0 not configured ehci0 at pci0 dev 26 function 0 "Intel 7 Series USB" rev 0x04: apic 0 int 16 ehci0: timed out waiting for BIOS usb0 at ehci0: USB revision 2.0 uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1 azalia0 at pci0 dev 27 function 0 "Intel 7 Series HD Audio" rev 0x04: msi azalia0: codecs: Conexant/0x5115, Intel/0x2806, using Conexant/0x5115 audio0 at azalia0 ppb0 at pci0 dev 28 function 0 "Intel 7 Series PCIE" rev 0xc4: msi pci1 at ppb0 bus 1 "Attansic Technology AR8172" rev 0x10 at pci1 dev 0 function 0 not configured ppb1 at pci0 dev 28 function 1 "Intel 7 Series PCIE" rev 0xc4: msi pci2 at ppb1 bus 2 iwn0 at pci2 dev 0 function 0 "Intel Centrino Wireless-N 135" rev 0xc4: msi, MIMO 1T1R, BGN, address 0c:d2:92:85:67:c7 ehci1 at pci0 dev 29 function 0 "Intel 7 Series USB" rev 0x04: apic 0 int 23 ehci1: timed out waiting for BIOS usb1 at ehci1: USB revision 2.0 uhub1 at usb1 "Intel EHCI root hub" rev 2.00/1.00 addr 1 pcib0 at pci0 dev 31 function 0 "Intel HM76 LPC" rev 0x04 ahci0 at pci0 dev 31 function 2 "Intel 7 Series AHCI" rev 0x04: msi, AHCI 1.3 scsibus1 at ahci0: 32 targets sd0 at scsibus1 targ 0 lun 0: <ATA, ST1000LM024 HN-M, 2AR2> SCSI3 0/direct fixed naa.50004cf20b4c1c01 sd0: 953869MB, 512 bytes/sector, 1953525168 sectors cd0 at scsibus1 targ 2 lun 0: <MATSHITA, DVD-RAM UJ8E1, 8.71> ATAPI 5/cdrom removable ichiic0 at pci0 dev 31 function 3 "Intel 7 Series SMBus" rev 0x04: apic 0 int 19 iic0 at ichiic0 spdmem0 at iic0 addr 0x50: 4GB DDR3 SDRAM PC3-12800 SO-DIMM spdmem1 at iic0 addr 0x52: 4GB DDR3 SDRAM PC3-12800 SO-DIMM isa0 at pcib0 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 pms0: Elantech Touchpad, version 3, firmware 0x450f03 pcppi0 at isa0 port 0x61 spkr0 at pcppi0 uhub2 at uhub0 port 1 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2 ugen0 at uhub2 port 3 "Intel product 0x07da" rev 2.00/78.69 addr 3 ugen1 at uhub2 port 4 "Generic USB2.0-CRW" rev 2.00/39.60 addr 4 uhub3 at uhub1 port 1 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2 umass0 at uhub3 port 2 configuration 1 interface 0 "JMicron USB to ATA/ATAPI Bridge" rev 2.00/1.00 addr 3 umass0: using SCSI over Bulk-Only scsibus2 at umass0: 2 targets, initiator 0 sd1 at scsibus2 targ 1 lun 0: <FUJITSU, MHZ2160BH G2, > SCSI2 0/direct fixed serial.152d23296168B3EEFFFF sd1: 152627MB, 512 bytes/sector, 312581808 sectors uvideo0 at uhub3 port 4 configuration 1 interface 0 "CF0DA35PY Lenovo EasyCamera" rev 2.00/0.09 addr 4 video0 at uvideo0 vscsi0 at root scsibus3 at vscsi0: 256 targets softraid0 at root scsibus4 at softraid0: 256 targets root on sd1a (19e2f94029a503f8.a) swap on sd1b dump on sd1b