我安装了 FreeBSD 13.1，带有集成英特尔显卡（英特尔 NUC）。我尝试过使用和不使用 ACPI 视频支持、使用 Intel 显卡驱动程序和 NVidia 显卡驱动程序（它有两张卡） - 每当我通过 KVM 从机器切换到另一台机器，然后再切换回来时，显示器都会保持不变空白的。
我可以通过 SSH 访问该机器，因此它仍然处于运行状态。当我使用 X 时和刚启动到控制台时都会发生这种情况。
dmesg 中没有显示任何内容。我在网上搜索并没有找到相关的内容。可能是什么原因造成的？
编辑以向遇到此情况的其他人提供信息：关闭显示器并重新打开后，屏幕也保持空白。我安装了 Ubuntu Linux 来代替 FreeBSD，并且遇到了同样的问题。将 NVidia 驱动程序从 5xx 降级到 4xx 可以修复 Linux 上的问题。
psi# cat dmesg.boot | grep -i acpi
Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
ACPI APIC Table: <INTEL NUC11PHB>
acpi0: <INTEL>
Firmware Error (ACPI): Failure creating named object [\134_SB.PC00.XHCI.RHUB.HS10._UPC], AE_ALREADY_EXISTS (20201113/dswload2-480)
ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20201113/psobject-372)
Firmware Error (ACPI): Failure creating named object [\134_SB.PC00.XHCI.RHUB.HS10._PLD], AE_ALREADY_EXISTS (20201113/dswload2-480)
ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20201113/psobject-372)
acpi0: Power Button (fixed)
cpu0: <ACPI CPU> on acpi0
hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff on acpi0
attimer0: <AT timer> port 0x40-0x43,0x50-0x53 irq 0 on acpi0
Timecounter "ACPI-fast" frequency 3579545 Hz quality 900
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x1808-0x180b on acpi0
acpi_ec0: <Embedded Controller: GPE 0x6e> port 0x62,0x66 on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
pcib1: <ACPI PCI-PCI bridge> at device 6.0 on pci0
pci1: <ACPI PCI bus> on pcib1
pcib2: <ACPI PCI-PCI bridge> at device 7.0 on pci0
pcib3: <ACPI PCI-PCI bridge> at device 7.2 on pci0
pcib4: <ACPI PCI-PCI bridge> at device 28.0 on pci0
pci2: <ACPI PCI bus> on pcib4
pcib5: <ACPI PCI-PCI bridge> at device 28.2 on pci0
pci3: <ACPI PCI bus> on pcib5
pcib6: <ACPI PCI-PCI bridge> at device 28.4 on pci0
pci4: <ACPI PCI bus> on pcib6
pcib7: <ACPI PCI-PCI bridge> at device 29.0 on pci0
pci5: <ACPI PCI bus> on pcib7
acpi_button0: <Sleep Button> on acpi0
acpi_button1: <Power Button> on acpi0
acpi_tz0: <Thermal Zone> on acpi0
acpi_syscontainer0: <System Container> on acpi0
acpi_syscontainer1: <System Container> on acpi0
acpi_wmi0: <ACPI-WMI mapping> on acpi0
acpi_wmi0: Embedded MOF found
ACPI: \134AMW0.WQBA: 1 arguments were passed to a non-method ACPI object (Buffer) (20201113/nsarguments-361)
acpi_wmi1: <ACPI-WMI mapping> on acpi0
acpi_wmi1: Embedded MOF found
ACPI: \134_SB.WFDE.WQCC: 1 arguments were passed to a non-method ACPI object (Buffer) (20201113/nsarguments-361)
acpi_wmi2: <ACPI-WMI mapping> on acpi0
acpi_wmi2: Embedded MOF found
ACPI: \134_SB.WFTE.WQCC: 1 arguments were passed to a non-method ACPI object (Buffer) (20201113/nsarguments-361)
acpi_wmi3: <ACPI-WMI mapping> on acpi0
acpi_wmi4: <ACPI-WMI mapping> on acpi0
iicbus0: <Philips I2C bus (ACPI-hinted)> on ig4iic0
iicbus1: <Philips I2C bus (ACPI-hinted)> on ig4iic1
Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
ACPI APIC Table: <INTEL NUC11PHB>
acpi0: <INTEL>
Firmware Error (ACPI): Failure creating named object [\134_SB.PC00.XHCI.RHUB.HS10._UPC], AE_ALREADY_EXISTS (20201113/dswload2-480)
ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20201113/psobject-372)
Firmware Error (ACPI): Failure creating named object [\134_SB.PC00.XHCI.RHUB.HS10._PLD], AE_ALREADY_EXISTS (20201113/dswload2-480)
ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20201113/psobject-372)
acpi0: Power Button (fixed)
cpu0: <ACPI CPU> on acpi0
hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff on acpi0
attimer0: <AT timer> port 0x40-0x43,0x50-0x53 irq 0 on acpi0
Timecounter "ACPI-fast" frequency 3579545 Hz quality 900
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x1808-0x180b on acpi0
acpi_ec0: <Embedded Controller: GPE 0x6e> port 0x62,0x66 on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
pcib1: <ACPI PCI-PCI bridge> at device 6.0 on pci0
pci1: <ACPI PCI bus> on pcib1
pcib2: <ACPI PCI-PCI bridge> at device 7.0 on pci0
pcib3: <ACPI PCI-PCI bridge> at device 7.2 on pci0
pcib4: <ACPI PCI-PCI bridge> at device 28.0 on pci0
pci2: <ACPI PCI bus> on pcib4
pcib5: <ACPI PCI-PCI bridge> at device 28.2 on pci0
pci3: <ACPI PCI bus> on pcib5
pcib6: <ACPI PCI-PCI bridge> at device 28.4 on pci0
pci4: <ACPI PCI bus> on pcib6
pcib7: <ACPI PCI-PCI bridge> at device 29.0 on pci0
pci5: <ACPI PCI bus> on pcib7
acpi_button0: <Sleep Button> on acpi0
acpi_button1: <Power Button> on acpi0
acpi_tz0: <Thermal Zone> on acpi0
acpi_syscontainer0: <System Container> on acpi0
acpi_syscontainer1: <System Container> on acpi0
acpi_wmi0: <ACPI-WMI mapping> on acpi0
acpi_wmi0: Embedded MOF found
ACPI: \134AMW0.WQBA: 1 arguments were passed to a non-method ACPI object (Buffer) (20201113/nsarguments-361)
acpi_wmi1: <ACPI-WMI mapping> on acpi0
acpi_wmi1: Embedded MOF found
ACPI: \134_SB.WFDE.WQCC: 1 arguments were passed to a non-method ACPI object (Buffer) (20201113/nsarguments-361)
acpi_wmi2: <ACPI-WMI mapping> on acpi0
acpi_wmi2: Embedded MOF found
ACPI: \134_SB.WFTE.WQCC: 1 arguments were passed to a non-method ACPI object (Buffer) (20201113/nsarguments-361)
acpi_wmi3: <ACPI-WMI mapping> on acpi0
acpi_wmi4: <ACPI-WMI mapping> on acpi0
iicbus0: <Philips I2C bus (ACPI-hinted)> on ig4iic0
iicbus1: <Philips I2C bus (ACPI-hinted)> on ig4iic1
===
psi# grep -i pci dmesg.boot
Features2=0x7ffafbbf<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,SDBG,FMA,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND>
Structured Extended Features=0xf3bfa7eb<FSGSBASE,TSCADJ,BMI1,AVX2,FDPEXC,SMEP,BMI2,ERMS,INVPCID,NFPUSG,PQE,AVX512F,AVX512DQ,RDSEED,ADX,SMAP,AVX512IFMA,CLFLUSHOPT,CLWB,PROCTRACE,AVX512CD,SHA,AVX512BW,AVX512VL>
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
vgapci0: <VGA-compatible display> port 0x4000-0x403f mem 0x6053000000-0x6053ffffff,0x4000000000-0x400fffffff at device 2.0 on pci0
vgapci0: Boot video device
pcib1: <ACPI PCI-PCI bridge> at device 6.0 on pci0
pci1: <ACPI PCI bus> on pcib1
vgapci1: <VGA-compatible display> port 0x3000-0x307f mem 0x6b000000-0x6bffffff,0x6040000000-0x604fffffff,0x6050000000-0x6051ffffff at device 0.0 on pci1
hdac0: <NVIDIA (0x10f9) HDA Controller> mem 0x6c080000-0x6c083fff at device 0.1 on pci1
xhci0: <NVIDIA TU106 USB 3.1 controller> mem 0x6052000000-0x605203ffff,0x6052040000-0x605204ffff at device 0.2 on pci1
pci1: <serial bus> at device 0.3 (no driver attached)
pcib2: <ACPI PCI-PCI bridge> at device 7.0 on pci0
pcib3: <ACPI PCI-PCI bridge> at device 7.2 on pci0
xhci1: <Intel Tiger Lake-LP Thunderbolt 4 USB controller> mem 0x6054190000-0x605419ffff at device 13.0 on pci0
pci0: <serial bus, USB> at device 13.2 (no driver attached)
pci0: <serial bus, USB> at device 13.3 (no driver attached)
xhci2: <Intel Tiger Lake-LP USB 3.2 controller> mem 0x6054180000-0x605418ffff at device 20.0 on pci0
pci0: <memory, RAM> at device 20.2 (no driver attached)
pci0: <network> at device 20.3 (no driver attached)
pci0: <serial bus> at device 21.0 (no driver attached)
pci0: <serial bus> at device 21.1 (no driver attached)
pci0: <simple comms> at device 22.0 (no driver attached)
pcib4: <ACPI PCI-PCI bridge> at device 28.0 on pci0
pci2: <ACPI PCI bus> on pcib4
rtsx0: <2.1e Realtek RTS525A PCIe MMC/SD Card Reader> mem 0x6c600000-0x6c600fff at device 0.0 on pci2
pcib5: <ACPI PCI-PCI bridge> at device 28.2 on pci0
pci3: <ACPI PCI bus> on pcib5
igc0: <Intel(R) Ethernet Controller I225-LM> mem 0x6c200000-0x6c2fffff,0x6c300000-0x6c303fff at device 0.0 on pci3
pcib6: <ACPI PCI-PCI bridge> at device 28.4 on pci0
pci4: <ACPI PCI bus> on pcib6
nvme0: <Generic NVMe Device> mem 0x6c500000-0x6c503fff at device 0.0 on pci4
pcib7: <ACPI PCI-PCI bridge> at device 29.0 on pci0
pci5: <ACPI PCI bus> on pcib7
nvme1: <Generic NVMe Device> mem 0x6c400000-0x6c403fff at device 0.0 on pci5
isab0: <PCI-ISA bridge> at device 31.0 on pci0
hdac1: <Intel Tiger Lake HDA Controller> mem 0x60541a8000-0x60541abfff,0x6054000000-0x60540fffff at device 31.3 on pci0
pci0: <serial bus> at device 31.5 (no driver attached)
drmn0: <drmn> on vgapci0
vgapci0: child drmn0 requested pci_enable_io
vgapci0: child drmn0 requested pci_enable_io
iwlwifi0: <iwlwifi> mem 0x60541ac000-0x60541affff at device 20.3 on pci0
ig4iic0: <Intel Tiger Lake-LP I2C Controller-4> at device 21.0 on pci0
ig4iic1: <Intel Tiger Lake-LP I2C Controller-5> at device 21.1 on pci0
ichsmb0: <Intel Tiger Lake SMBus controller> port 0xefa0-0xefbf mem 0x60541b4000-0x60541b40ff at device 31.4 on pci0
pci1: unknown notify 0x2
pci1: unknown notify 0x2
pci1: unknown notify 0x2
pci1: unknown notify 0x2
pci1: unknown notify 0x2
Features2=0x7ffafbbf<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,SDBG,FMA,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND>
Structured Extended Features=0xf3bfa7eb<FSGSBASE,TSCADJ,BMI1,AVX2,FDPEXC,SMEP,BMI2,ERMS,INVPCID,NFPUSG,PQE,AVX512F,AVX512DQ,RDSEED,ADX,SMAP,AVX512IFMA,CLFLUSHOPT,CLWB,PROCTRACE,AVX512CD,SHA,AVX512BW,AVX512VL>
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
vgapci0: <VGA-compatible display> port 0x4000-0x403f mem 0x6053000000-0x6053ffffff,0x4000000000-0x400fffffff at device 2.0 on pci0
vgapci0: Boot video device
pcib1: <ACPI PCI-PCI bridge> at device 6.0 on pci0
pci1: <ACPI PCI bus> on pcib1
vgapci1: <VGA-compatible display> port 0x3000-0x307f mem 0x6b000000-0x6bffffff,0x6040000000-0x604fffffff,0x6050000000-0x6051ffffff at device 0.0 on pci1
hdac0: <NVIDIA (0x10f9) HDA Controller> mem 0x6c080000-0x6c083fff at device 0.1 on pci1
xhci0: <NVIDIA TU106 USB 3.1 controller> mem 0x6052000000-0x605203ffff,0x6052040000-0x605204ffff at device 0.2 on pci1
pci1: <serial bus> at device 0.3 (no driver attached)
pcib2: <ACPI PCI-PCI bridge> at device 7.0 on pci0
pcib3: <ACPI PCI-PCI bridge> at device 7.2 on pci0
xhci1: <Intel Tiger Lake-LP Thunderbolt 4 USB controller> mem 0x6054190000-0x605419ffff at device 13.0 on pci0
pci0: <serial bus, USB> at device 13.2 (no driver attached)
pci0: <serial bus, USB> at device 13.3 (no driver attached)
xhci2: <Intel Tiger Lake-LP USB 3.2 controller> mem 0x6054180000-0x605418ffff at device 20.0 on pci0
pci0: <memory, RAM> at device 20.2 (no driver attached)
pci0: <network> at device 20.3 (no driver attached)
pci0: <serial bus> at device 21.0 (no driver attached)
pci0: <serial bus> at device 21.1 (no driver attached)
pci0: <simple comms> at device 22.0 (no driver attached)
pcib4: <ACPI PCI-PCI bridge> at device 28.0 on pci0
pci2: <ACPI PCI bus> on pcib4
rtsx0: <2.1e Realtek RTS525A PCIe MMC/SD Card Reader> mem 0x6c600000-0x6c600fff at device 0.0 on pci2
pcib5: <ACPI PCI-PCI bridge> at device 28.2 on pci0
pci3: <ACPI PCI bus> on pcib5
igc0: <Intel(R) Ethernet Controller I225-LM> mem 0x6c200000-0x6c2fffff,0x6c300000-0x6c303fff at device 0.0 on pci3
pcib6: <ACPI PCI-PCI bridge> at device 28.4 on pci0
pci4: <ACPI PCI bus> on pcib6
nvme0: <Generic NVMe Device> mem 0x6c500000-0x6c503fff at device 0.0 on pci4
pcib7: <ACPI PCI-PCI bridge> at device 29.0 on pci0
pci5: <ACPI PCI bus> on pcib7
nvme1: <Generic NVMe Device> mem 0x6c400000-0x6c403fff at device 0.0 on pci5
isab0: <PCI-ISA bridge> at device 31.0 on pci0
hdac1: <Intel Tiger Lake HDA Controller> mem 0x60541a8000-0x60541abfff,0x6054000000-0x60540fffff at device 31.3 on pci0
pci0: <serial bus> at device 31.5 (no driver attached)
drmn0: <drmn> on vgapci0
vgapci0: child drmn0 requested pci_enable_io
vgapci0: child drmn0 requested pci_enable_io
iwlwifi0: <iwlwifi> mem 0x60541ac000-0x60541affff at device 20.3 on pci0
ig4iic0: <Intel Tiger Lake-LP I2C Controller-4> at device 21.0 on pci0
ig4iic1: <Intel Tiger Lake-LP I2C Controller-5> at device 21.1 on pci0
ichsmb0: <Intel Tiger Lake SMBus controller> port 0xefa0-0xefbf mem 0x60541b4000-0x60541b40ff at device 31.4 on pci0