Thinkpad T530(2392-C3G) can't boot with selected Nvidia card and AC power off.

[Arkadyi Dudevich]

Good day!
This model has two different video card Intel and Nvidia.
I can choose three variants in the BIOS (Intel, Nvidia or Nvidia Optimus).
My T530 can't boot with selected Nvidia card and AC power off.
If AC power on - boot without problem.
I don't have problem with Intel card in  both variants (AC power on or off).

uname -a
FreeBSD ark 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r300671: Wed 
May 25 15:21:38 MSK 2016     ark at ark:/usr/obj/usr/src/sys/ARK11_64  amd64

dmesg with Nvidia card and AC power on:
Copyright (c) 1992-2016 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
	The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 11.0-CURRENT #0 r300671: Wed May 25 15:21:38 MSK 2016
    ark at ark:/usr/obj/usr/src/sys/ARK11_64 amd64
FreeBSD clang version 3.8.0 (tags/RELEASE_380/final 262564) (based on 
LLVM 3.8.0)
VT(vga): text 80x25
CPU: Intel(R) Core(TM) i5-3230M CPU @ 2.60GHz (2594.16-MHz K8-class 
CPU)
  Origin="GenuineIntel"  Id=0x306a9  Family=0x6  Model=0x3a  Stepping=9
  Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SE
P,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE
,SSE2,SS,HTT,TM,PBE>
  Features2=0x7fbae3bf<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,E
ST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,T
SCDLT,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND>
  AMD Features=0x28100800<SYSCALL,NX,RDTSCP,LM>
  AMD Features2=0x1<LAHF>
  Structured Extended Features=0x281<FSGSBASE,SMEP,ERMS>
  XSAVE Features=0x1<XSAVEOPT>
  VT-x: PAT,HLT,MTF,PAUSE,EPT,UG,VPID
  TSC: P-state invariant, performance statistics
real memory  = 12884901888 (12288 MB)
avail memory = 12196478976 (11631 MB)
Event timer "LAPIC" quality 600
ACPI APIC Table: <LENOVO TP-G4   >
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
FreeBSD/SMP: 1 package(s) x 2 core(s) x 2 hardware threads
random: unblocking device.
ioapic0 <Version 2.0> irqs 0-23 on motherboard
random: entropy device external interface
random: registering fast source Intel Secure Key RNG
random: fast provider: "Intel Secure Key RNG"
kbd1 at kbdmux0
netmap: loaded module
vtvga0: <VT VGA driver> on motherboard
cryptosoft0: <software crypto> on motherboard
acpi0: <LENOVO TP-G4> on motherboard
acpi_ec0: <Embedded Controller: GPE 0x11, ECDT> port 0x62,0x66 on acpi0
acpi0: Power Button (fixed)
cpu0: <ACPI CPU> on acpi0
cpu1: <ACPI CPU> on acpi0
cpu2: <ACPI CPU> on acpi0
cpu3: <ACPI CPU> on acpi0
attimer0: <AT timer> port 0x40-0x43 irq 0 on acpi0
Timecounter "i8254" frequency 1193182 Hz quality 0
Event timer "i8254" frequency 1193182 Hz quality 100
hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff on acpi0
Timecounter "HPET" frequency 14318180 Hz quality 950
Event timer "HPET" frequency 14318180 Hz quality 550
Event timer "HPET1" frequency 14318180 Hz quality 440
Event timer "HPET2" frequency 14318180 Hz quality 440
Event timer "HPET3" frequency 14318180 Hz quality 440
Event timer "HPET4" frequency 14318180 Hz quality 440
atrtc0: <AT realtime clock> port 0x70-0x71 irq 8 on acpi0
Event timer "RTC" frequency 32768 Hz quality 0
Timecounter "ACPI-fast" frequency 3579545 Hz quality 900
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x408-0x40b on acpi0
acpi_lid0: <Control Method Lid Switch> on acpi0
acpi_button0: <Sleep Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
pcib1: <ACPI PCI-PCI bridge> irq 16 at device 1.0 on pci0
pci1: <ACPI PCI bus> on pcib1
vgapci0: <VGA-compatible display> port 0x6000-0x607f mem 
0xf2000000-0xf2ffffff,0xe0000000-0xefffffff,0xf0000000-0xf1ffffff irq 16 at device 
0.0 on pci1
acpi_video0: <ACPI video extension> on vgapci0
vgapci0: Boot video device
hdac0: <NVIDIA GT108 HDA Controller> mem 0xf3000000-0xf3003fff irq 17 at 
device 0.1 on pci1
xhci0: <Intel Panther Point USB 3.0 controller> mem 0xf5220000-0xf522ffff irq 
16 at device 20.0 on pci0
xhci0: 32 bytes context size, 64-bit DMA
xhci0: Port routing mask set to 0xffffffff
usbus0 on xhci0
pci0: <simple comms> at device 22.0 (no driver attached)
em0: <Intel(R) PRO/1000 Network Connection 7.6.1-k> port 0x7040-0x705f 
mem 0xf5200000-0xf521ffff,0xf523b000-0xf523bfff irq 20 at device 25.0 on pci0
em0: Using an MSI interrupt
em0: Ethernet address: 3c:97:0e:a2:0e:94
em0: netmap queues/slots: TX 1/1024, RX 1/1024
ehci0: <Intel Panther Point USB 2.0 controller> mem 0xf523a000-0xf523a3ff irq 
16 at device 26.0 on pci0
usbus1: EHCI version 1.0
usbus1 on ehci0
hdac1: <Intel Panther Point HDA Controller> mem 0xf5230000-0xf5233fff irq 22 
at device 27.0 on pci0
pcib2: <ACPI PCI-PCI bridge> irq 16 at device 28.0 on pci0
pcib2: [GIANT-LOCKED]
pci2: <ACPI PCI bus> on pcib2
sdhci_pci0: <RICOH R5CE823 SD> mem 0xf4a00000-0xf4a000ff irq 16 at 
device 0.0 on pci2
sdhci_pci0: 1 slot(s) allocated
pcib3: <ACPI PCI-PCI bridge> irq 17 at device 28.1 on pci0
pci3: <ACPI PCI bus> on pcib3
iwn0: <Intel Centrino Advanced-N 6205> mem 0xf4900000-0xf4901fff irq 17 at 
device 0.0 on pci3