我最近购买了一台英特尔 NUC11 i7。使用 3840x2160 @ 60hz 的显示器时，我无法获得稳定的图像。当屏幕上有任何动作时，屏幕每隔几秒钟就会打开和关闭。
如果我将分辨率降低到 2560x1440；或者将刷新率降低到 30hz，我就可以获得稳定的图像。
相同的硬件在 Win 10 上以全分辨率/刷新率完美运行。
我和英特尔客户支持团队（他们正式支持 20.04 LTS -https://ark.intel.com/content/www/us/en/ark/products/212516/intel-nuc-11-pro-kit-nuc11tnhi70q.html）。他们已经没有主意了，现在只是说“如果它可以在 Windows 上运行，那么机器就没有问题，所以这是 Ubuntu 的错”。
我可以确认以下几点：
- Bios 已更新至最新版本；我还重新安装了 bios（英特尔建议）
- i7 处理器；16GB 内存
- 电缆绝对是正确的类型，因为它与 Windows 完美兼容。我尝试了显示器/nuc 上的多个电缆和端口
- 已尝试过 HDMI 和 Display 端口
- 全新安装 Ubuntu
- 尝试了最新版本的 Ubuntu（21.04），从 U 盘加载，问题仍然存在
- 在 Bios 中，我已将 IGD 最小内存和 IGD 光圈大小设置为最大值（英特尔建议）
- 我已经运行
xrandr --auto以关闭“幻影显示”（英特尔建议） - 已在 bios 中手动将视频模式设置为 hdmi（英特尔建议）
以下是英特尔请求的系统信息转储：
# SSU Scan Information
Scan Info:
Version:"1.0.0.0"
Scan Date:"2021/08/24"
Scan Time:"08:34:28"
## Scanned Hardware
Computer:
BaseBoard Manufacturer:"Intel Corporation"
Bios Mode:"UEFI"
Bios Version/Date:"TNTGLV57.0057.2021.0609.1529,06/09/2021"
CD or DVD:"Not Available"
Platform Role:"Linux richhoward-NUC11TNKv7 5.11.0-27-generic #29~20.04.1-Ubuntu SMP Wed Aug 11 15:58:17 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux"
Processor:"11th Gen Intel(R) Core(TM) i7-1185G7 @ 3.00GHz"
Serial Number:"BTTN104003HJ"
SMBIOS Version:"3.3.0"
Sound Cards:"HDA-Intel - HDA Intel PCH"
Sound Cards:"HDA Intel PCH at 0x603d1a0000 irq 189"
Sound Cards:"USB-Audio - nuraphone"
Sound Cards:"00"
System Manufacturer:"Intel(R) Client Systems"
System Model:"NUC11TNKv7"
System Type:"x64-based PC"
- Display
- "Intel Corporation Device 9a49 (rev 01) (prog-if 00 [VGA controller])"
Adapter RAM:"size=1G"
Capabilities:"[40] Vendor Specific Information: Len=0c <?>"
Capabilities:"[70] Express Root Complex Integrated Endpoint, MSI 00"
Capabilities:"[ac] MSI: Enable+ Count=1/1 Maskable+ 64bit-"
Capabilities:"[d0] Power Management version 2"
Capabilities:"[100] Process Address Space ID (PASID)"
Capabilities:"[200] Address Translation Service (ATS)"
Capabilities:"[300] Page Request Interface (PRI)"
Capabilities:"[320] Single Root I/O Virtualization (SR-IOV)"
Caption:"Intel Corporation Device 9a49 (rev 01) (prog-if 00 [VGA controller])"
Device ID:"8086:3003"
Driver:"i915"
Driver Path:"/lib/modules/5.11.0-27-generic/kernel/drivers/gpu/drm/i915/i915.ko"
Driver Provider:"Intel Corporation"
Driver Provider:"Tungsten Graphics, Inc."
Driver Version:""
Flags:"bus master, fast devsel, latency 0, IRQ 188"
I/O Ports:"I/O ports at 3000 [size=64]"
Location:"pci@0000:00:02.0"
Manufacturer:"Intel Corporation [8086]"
Power Management Capabilities:"Power Management version 2"
Refresh Rate - Current:"59.91"
Refresh Rate - Current:"59.96"
Resolution:"2560x1440"
Resolution:"1920x1080"
- Memory
Physical Memory (Available):"9055 MB"
Physical Memory (Installed):"15565 MB"
Physical Memory (Total):"17613 MB"
- "Controller1-ChannelA-DIMM0"
Capacity:"16384 MB"
Configured Clock Speed:"Not Available"
Configured Voltage:"1.2 V"
Data Width:"64 bits"
Form Factor:"SODIMM"
Interleave Position:"First Position"
Locator:"Controller1-ChannelA-DIMM0"
Manufacturer:"Crucial Technology"
Maximum Voltage:"1.2 V"
Minimum Voltage:"1.2 V"
Part Number:"T16G4SFRA266.M16FRS"
Serial Number:"E5E0AAEF"
Speed:"Not Available"
Type:"Synchronous"
- Motherboard
Manufacturer:"Intel Corporation"
Product:"NUC11TNBv7"
Serial Number:"BTTN104003HJ"
Version:"K87766-402"
- Networking
Interface enp88s0:"Not Available"
Interface wlo1:"Not Available"
- Operating System
Boot Device:"/dev/nvme0n1p2"
Last Reset:"up 1:19, 1 user, load average: 0.56, 0.49, 0.50"
Locale:"en_GB"
OS Manufacturer:"Ubuntu 20.04.3 LTS \n \l"
OS Name:"Ubuntu 20.04.3 LTS \n \l"
Page File:"/swapfile"
Page File Space (Available):"2097148"
Page File Space (Used):"0"
Physical Memory (Available):"9053 MB"
Physical Memory (Installed):"15565 MB"
Physical Memory (Total):"17613 MB"
Version:"5.11.0-27-generic GNU/Linux"
Virtual Memory (Available):"2097148"
Virtual Memory (Total):"15939096"
- Processor
- "11th Gen Intel(R) Core(TM) i7-1185G7 @ 3.00GHz"
Architecture:"x86_64"
Available:"Offline"
Byte Order:"Little Endian"
Cache Size:"12288 KB"
Caption:"11th Gen Intel(R) Core(TM) i7-1185G7 @ 3.00GHz"
- Characteristics
64-bit capable
Enhanced Virtualization
Execute Protection
Hardware Thread
Multi-Core
Power/Performance Control
CPU Speed (Minimum):"1266.478"
CPU Speed (Maximum):"4800 MHz"
Current Voltage:"0.8 V"
External Clock:"100 MHz"
Family:"Core i7"
- Flags
"ACPI (ACPI supported)"
"APIC (On-chip APIC hardware supported)"
"CLFSH (CLFLUSH instruction supported)"
"CMOV (Conditional move instruction supported)"
"CX8 (CMPXCHG8 instruction supported)"
"DE (Debugging extension)"
"DS (Debug store)"
"FPU (Floating-point unit on-chip)"
"FXSR (FXSAVE and FXSTOR instructions supported)"
"HTT (Multi-threading)"
"MCA (Machine check architecture)"
"MCE (Machine check exception)"
"MMX (MMX technology supported)"
"MSR (Model specific registers)"
"MTRR (Memory type range registers)"
"PAE (Physical address extension)"
"PAT (Page attribute table)"
"PBE (Pending break enabled)"
"PGE (Page global enable)"
"PSE-36 (36-bit page size extension)"
"PSE (Page size extension)"
"SEP (Fast system call)"
"SSE2 (Streaming SIMD extensions 2)"
"SSE (Streaming SIMD extensions)"
"SS (Self-snoop)"
"TM (Thermal monitor supported)"
"TSC (Time stamp counter)"
"VME (Virtual mode extension)"
ID:"C1 06 08 00 FF FB EB BF"
Level 1 Cache:"192 KiB
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 ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l2 invpcid_single cdp_l2 ssbd ibrs ibpb stibp ibrs_enhanced tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid rdt_a avx512f avx512dq rdseed adx smap avx512ifma clflushopt clwb intel_pt avx512cd sha_ni avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves split_lock_detect dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp hwp_pkg_req avx512vbmi umip pku ospke avx512_vbmi2 gfni vaes vpclmulqdq avx512_vnni avx512_bitalg tme avx512_vpopcntdq rdpid movdiri movdir64b fsrm avx512_vp2intersect md_clear flush_l1d arch_capabilities"
Level 2 Cache:"5 MiB
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 ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l2 invpcid_single cdp_l2 ssbd ibrs ibpb stibp ibrs_enhanced tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid rdt_a avx512f avx512dq rdseed adx smap avx512ifma clflushopt clwb intel_pt avx512cd sha_ni avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves split_lock_detect dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp hwp_pkg_req avx512vbmi umip pku ospke avx512_vbmi2 gfni vaes vpclmulqdq avx512_vnni avx512_bitalg tme avx512_vpopcntdq rdpid movdiri movdir64b fsrm avx512_vp2intersect md_clear flush_l1d arch_capabilities"
Level 3 Cache:"12 MiB"
Load:"load average: 0.56, 0.49, 0.50"
Manufacturer:"Intel(R) Corporation"
Model:"140"
Name:"11th Gen Intel(R) Core(TM) i7-1185G7 @ 3.00GHz"
Number of Cores:"4"
Number of Cores - Enabled:"4"
Part Number:"To Be Filled By O.E.M."
Socket Designation:"U3E1"
Status:"Populated, Enabled"
Version:"11th Gen Intel(R) Core(TM) i7-1185G7 @ 3.00GHz"
Voltage:"0.8 V"
Virtualization:"Not Available"
- Storage
- "DataTraveler_3.0"
Capabilities:"IORDY not likely"
Capabilities:"Cannot perform double-word IO"
Capabilities:"R/W multiple sector transfer: not supported"
Capabilities:"DMA: not supported"
Capabilities:"PIO: pio0 "
Caption:"/dev/sda"
Cylinders - Total:"0"
Description:"ATA device, with non-removable media"
Firmware:"Not Available"
Heads - Total:"0"
Index:"Not Available"
Interface Type:"ATA"
Manufacturer:"Not Available"
Model:"Not Available"
Name:"sda"
Partitions:"Not Available"
Sectors - Per Track:"0"
Serial Number:"Not Available"
Size:"1024*1024: 0 MBytes"
Size:"1000*1000: 0 MBytes"
Size - Available:"Filesystem 1K-blocks Used Available Use% Mounted on"
Size - Available:"/dev/sda1 15143456 31816 15111640 1% /media/richhoward/blah"
SMART Attributes:""
有人知道会发生什么吗？
答案1
我遇到了完全相同的问题，我必须在 AU 注册一个帐户才能添加这个答案。
我的系统也是 NUC11 i7。我最初安装的是 Fedora，在 4k/60hz 下工作时，我也遇到了同样的 HDMI 连接随机断开的问题。
我认为该问题与内存安装有关。
尝试以下操作后问题仍然存在：
- 用 Ubuntu 替换 Fedora
- 将 BIOS 升级到最新版本（撰写本文时为 041）
- 使用 USB-C 转 HDMI 或 DP，前后均提供 USB-C
- 尝试不同的 BIOS 视频内存配置
但有趣的是，在我添加了额外的 RAM 带后，问题自动得到解决。我的初始设置与您的一样，安装了一个 16G 的 DIMM。
我希望可以对您的问题添加评论，而不是将其添加为答案，因为我不知道它是否真的对您的情况有帮助。