FreeBSD Nvidia drivers Screen Brightness & Power Management

I am running FreeBSD 11RC2 with The current Nvidia-driver version 367.44 and using the nvidia-modeset kernel module that's loaded at startup in my /etc/rc.conf file by adding kld_list="nvidia-modeset" Here's the info on my GPU vgapci0@pci0:1:0:0: class=0x030000 card=0x0130106b chip=0x0fe910de rev=0xa1 hdr=0x00 vendor = 'NVIDIA Corporation' device = 'GK107M [GeForce GT 750M Mac Edition]' class = display subclass = VGA cap 01 = powerspec 3 supports D0 D3 current D0 cap 05 = MSI supports 1 message, 64 bit enabled with 1 message cap 10 = PCI-Express 2 endpoint max data 256(256) RO NS link x8(x16) speed 8.0(8.0) ASPM L0s/L1(L0s/L1) cap 09[b4] = vendor (length 20) ecap 0002 = VC 1 max VC0 ecap 0004 = Power Budgeting 1 ecap 0001 = AER 2 0 fatal 0 non-fatal 0 corrected ecap 000b = Vendor 1 ID 1 ecap 0019 = PCIe Sec 1 lane errors 0 Here is the acpi information for this machine : http://paste2.org/LUcIwtzn device acpi debug.acpi.resume_beep: 0 debug.acpi.batt.batt_sleep_ms: 0 debug.acpi.ec.timeout: 750 debug.acpi.ec.polled: 0 debug.acpi.ec.burst: 0 debug.acpi.cpu_unordered: 0 debug.acpi.suspend_bounce: 0 debug.acpi.reset_clock: 1 debug.acpi.default_register_width: 1 debug.acpi.interpreter_slack: 1 debug.acpi.enable_debug_objects: 0 debug.acpi.acpi_ca_version: 20160527 debug.acpi.max_threads: 3 debug.acpi.tasks_hiwater: 40 debug.acpi.max_tasks: 1024 hw.acpi.acline: 1 hw.acpi.battery.info_expire: 5 hw.acpi.battery.units: 1 hw.acpi.battery.state: 0 hw.acpi.battery.time: -1 hw.acpi.battery.life: 97 hw.acpi.cpu.cx_lowest: C2 hw.acpi.reset_video: 0 hw.acpi.handle_reboot: 1 hw.acpi.disable_on_reboot: 0 hw.acpi.verbose: 0 hw.acpi.s4bios: 0 hw.acpi.sleep_delay: 1 hw.acpi.suspend_state: S3 hw.acpi.standby_state: NONE hw.acpi.lid_switch_state: NONE hw.acpi.sleep_button_state: S3 hw.acpi.power_button_state: S5 hw.acpi.supported_sleep_state: S3 S4 S5 machdep.idle: acpi machdep.idle_available: spin, mwait, hlt, acpi machdep.acpi_root: 2061033492 machdep.acpi_timer_freq: 3579545 dev.acpi_perf.7.%parent: cpu7 dev.acpi_perf.7.%pnpinfo: dev.acpi_perf.7.%location: dev.acpi_perf.7.%driver: acpi_perf dev.acpi_perf.7.%desc: dev.acpi_perf.6.%parent: cpu6 dev.acpi_perf.6.%pnpinfo: dev.acpi_perf.6.%location: dev.acpi_perf.6.%driver: acpi_perf dev.acpi_perf.6.%desc: dev.acpi_perf.5.%parent: cpu5 dev.acpi_perf.5.%pnpinfo: dev.acpi_perf.5.%location: dev.acpi_perf.5.%driver: acpi_perf dev.acpi_perf.5.%desc: dev.acpi_perf.4.%parent: cpu4 dev.acpi_perf.4.%pnpinfo: dev.acpi_perf.4.%location: dev.acpi_perf.4.%driver: acpi_perf dev.acpi_perf.4.%desc: dev.acpi_perf.3.%parent: cpu3 dev.acpi_perf.3.%pnpinfo: dev.acpi_perf.3.%location: dev.acpi_perf.3.%driver: acpi_perf dev.acpi_perf.3.%desc: dev.acpi_perf.2.%parent: cpu2 dev.acpi_perf.2.%pnpinfo: dev.acpi_perf.2.%location: dev.acpi_perf.2.%driver: acpi_perf dev.acpi_perf.2.%desc: dev.acpi_perf.1.%parent: cpu1 dev.acpi_perf.1.%pnpinfo: dev.acpi_perf.1.%location: dev.acpi_perf.1.%driver: acpi_perf dev.acpi_perf.1.%desc: dev.acpi_perf.0.%parent: cpu0 dev.acpi_perf.0.%pnpinfo: dev.acpi_perf.0.%location: dev.acpi_perf.0.%driver: acpi_perf dev.acpi_perf.0.%desc: dev.acpi_perf.%parent: dev.fpupnp.0.%parent: acpi0 dev.atdma.0.%parent: acpi0 dev.acpi_button.1.%parent: acpi0 dev.acpi_button.1.%pnpinfo: _HID=PNP0C0E _UID=0 dev.acpi_button.1.%location: handle=\_SB_.SLPB dev.acpi_button.1.%driver: acpi_button dev.acpi_button.1.%desc: Sleep Button dev.acpi_button.0.%parent: acpi0 dev.acpi_button.0.%pnpinfo: _HID=PNP0C0C _UID=0 dev.acpi_button.0.%location: handle=\_SB_.PWRB dev.acpi_button.0.%driver: acpi_button dev.acpi_button.0.%desc: Power Button dev.acpi_button.%parent: dev.acpi_lid.0.wake: 1 dev.acpi_lid.0.%parent: acpi0 dev.acpi_lid.0.%pnpinfo: _HID=PNP0C0D _UID=0 dev.acpi_lid.0.%location: handle=\_SB_.LID0 dev.acpi_lid.0.%driver: acpi_lid dev.acpi_lid.0.%desc: Control Method Lid Switch dev.acpi_lid.%parent: dev.acpi_acad.0.wake: 0 dev.acpi_acad.0.%parent: acpi0 dev.acpi_acad.0.%pnpinfo: _HID=ACPI0003 _UID=0 dev.acpi_acad.0.%location: handle=\_SB_.ADP1 dev.acpi_acad.0.%driver: acpi_acad dev.acpi_acad.0.%desc: AC Adapter dev.acpi_acad.%parent: dev.battery.0.%parent: acpi0 dev.pcib.0.%parent: acpi0 dev.pci_link.7.%parent: acpi0 dev.pci_link.6.%parent: acpi0 dev.pci_link.5.%parent: acpi0 dev.pci_link.4.%parent: acpi0 dev.pci_link.3.%parent: acpi0 dev.pci_link.2.%parent: acpi0 dev.pci_link.1.%parent: acpi0 dev.pci_link.0.%parent: acpi0 dev.acpi_timer.0.%parent: acpi0 dev.acpi_timer.0.%pnpinfo: unknown dev.acpi_timer.0.%location: unknown dev.acpi_timer.0.%driver: acpi_timer dev.acpi_timer.0.%desc: 24-bit timer at 3.579545MHz dev.acpi_timer.%parent: dev.attimer.0.%parent: acpi0 dev.atrtc.0.%parent: acpi0 dev.cpu.7.%parent: acpi0 dev.cpu.6.%parent: acpi0 dev.cpu.5.%parent: acpi0 dev.cpu.4.%parent: acpi0 dev.cpu.3.%parent: acpi0 dev.cpu.2.%parent: acpi0 dev.cpu.1.%parent: acpi0 dev.cpu.0.%parent: acpi0 dev.acpi_sysresource.2.%parent: acpi0 dev.acpi_sysresource.2.%pnpinfo: _HID=PNP0C01 _UID=2 dev.acpi_sysresource.2.%location: handle=\_SB_.MEM2 dev.acpi_sysresource.2.%driver: acpi_sysresource dev.acpi_sysresource.2.%desc: System Resource dev.acpi_sysresource.1.%parent: acpi0 dev.acpi_sysresource.1.%pnpinfo: _HID=PNP0C02 _UID=1 dev.acpi_sysresource.1.%location: handle=\_SB_.PCI0.PDRC dev.acpi_sysresource.1.%driver: acpi_sysresource dev.acpi_sysresource.1.%desc: System Resource dev.acpi_sysresource.0.%parent: acpi0 dev.acpi_sysresource.0.%pnpinfo: _HID=PNP0C02 _UID=2 dev.acpi_sysresource.0.%location: handle=\_SB_.PCI0.LPCB.LDRC dev.acpi_sysresource.0.%driver: acpi_sysresource dev.acpi_sysresource.0.%desc: System Resource dev.acpi_sysresource.%parent: dev.hpet.0.%parent: acpi0 dev.acpi_ec.0.wake: 0 dev.acpi_ec.0.%parent: acpi0 dev.acpi_ec.0.%pnpinfo: _HID=PNP0C09 _UID=0 dev.acpi_ec.0.%location: handle=\_SB_.PCI0.LPCB.EC__ dev.acpi_ec.0.%driver: acpi_ec dev.acpi_ec.0.%desc: Embedded Controller: GPE 0x17, ECDT dev.acpi_ec.%parent: dev.acpi.0.%parent: nexus0 dev.acpi.0.%pnpinfo: dev.acpi.0.%location: dev.acpi.0.%driver: acpi dev.acpi.0.%desc: APPLE Apple00 dev.acpi.%parent: I came from running linux and typically there's a video or some acpi settings that will control the brightness of the screen but on FreeBSD, there doesn't seem to be anything like this so my monitor is constantly at 100% brightness. Shouldn't there be some way to dim the brightness through the acpi interface? Can I get some support to be able to dim the screen brightness? [edit] Here is the output of my xorg.conf # nvidia-xconfig: X configuration file generated by nvidia-xconfig # nvidia-xconfig: version 367.35 Wed Sep 7 17:03:49 CST 2016 Section "ServerLayout" Identifier "Layout0" Screen 0 "Screen0" InputDevice "Keyboard0" "CoreKeyboard" InputDevice "Mouse0" "CorePointer" EndSection Section "Files" EndSection Section "InputDevice" # generated from default Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/sysmouse" Option "Emulate3Buttons" "no" Option "ZAxisMapping" "4 5" EndSection Section "InputDevice" # generated from default Identifier "Keyboard0" Driver "keyboard" EndSection Section "Monitor" Identifier "Monitor0" VendorName "Unknown" ModelName "Unknown" HorizSync 28.0 - 33.0 VertRefresh 43.0 - 72.0 Option "DPMS" EndSection Section "Device" Identifier "Device0" Driver "nvidia" VendorName "NVIDIA Corporation" EndSection Section "Screen" Identifier "Screen0" Device "Device0" Monitor "Monitor0" DefaultDepth 24 SubSection "Display" Depth 24 EndSubSection EndSection