i5-4200U CPU仅报告一个核心而不是4个

在我的Acer E1-572上我看到我的Ubuntu(16.10)只有一个CPU核心。 我有一个使用Win10的双启动,在Win10中所有4个核心都正确显示。

我能做什么? 我从安装了ubuntu-repos的microcode获得了最新的软件包。

有人可以帮助我吗?

cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 69 model name : Intel(R) Core(TM) i5-4200U CPU @ 1.60GHz stepping : 1 microcode : 0x1f cpu MHz : 2299.859 cache size : 3072 KB physical id : 0 siblings : 1 core id : 0 cpu cores : 1 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 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 arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm epb tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid xsaveopt dtherm ida arat pln pts bugs : bogomips : 4589.44 clflush size : 64 cache_alignment : 64 address sizes : 39 bits physical, 48 bits virtual power management: 

cat / var / log / dmesg | grep CPU

 [ 0.000000] smpboot: Allowing 16 CPUs, 12 hotplug CPUs [ 0.000000] setup_percpu: NR_CPUS:256 nr_cpumask_bits:256 nr_cpu_ids:16 nr_node_ids:1 [ 0.000000] PERCPU: Embedded 27 pages/cpu @ffff88013f400000 s81408 r8192 d20992 u131072 [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=16, Nodes=1 [ 0.000000] RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=16. [ 0.000000] Offload RCU callbacks from all CPUs [ 0.000000] Offload RCU callbacks from CPUs: 0-15. [ 0.014240] CPU: Physical Processor ID: 0 [ 0.014241] CPU: Processor Core ID: 0 [ 0.014249] mce: CPU supports 7 MCE banks [ 0.014261] CPU0: Thermal monitoring enabled (TM1) [ 0.106015] smpboot: CPU0: Intel(R) Core(TM) i3-2350M CPU @ 2.30GHz (fam: 06, model: 2a, stepping: 07) [ 0.106075] perf_event_intel: PEBS disabled due to CPU errata, please upgrade microcode [ 0.108002] .... node #0, CPUs: #1 [ 0.121168] NMI watchdog: enabled on all CPUs, permanently consumes one hw-PMU counter. [ 0.147643] x86: Booted up 1 node, 4 CPUs [ 0.156470] mtrr: your CPUs had inconsistent variable MTRR settings [ 0.156471] mtrr: probably your BIOS does not setup all CPUs. [ 0.809759] microcode: CPU0 sig=0x206a7, pf=0x10, revision=0x23 [ 0.809765] microcode: CPU1 sig=0x206a7, pf=0x10, revision=0x23 [ 0.809771] microcode: CPU2 sig=0x206a7, pf=0x10, revision=0x23 [ 0.809778] microcode: CPU3 sig=0x206a7, pf=0x10, revision=0x23 [ 0.890802] ledtrig-cpu: registered to indicate activity on CPUs 

sudo lscpu

 Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 1 On-line CPU(s) list: 0 Thread(s) pro Kern: 1 Kern(e) pro Socket: 1 Socket(s): 1 NUMA-Knoten: 1 Anbieterkennung: GenuineIntel Prozessorfamilie: 6 Modell: 69 Model name: Intel(R) Core(TM) i5-4200U CPU @ 1.60GHz Stepping: 1 CPU MHz: 2300.000 CPU max MHz: 2600,0000 CPU min MHz: 800,0000 BogoMIPS: 4589.51 Virtualisierung: VT-x L1d Cache: 32K L1i Cache: 32K L2 Cache: 256K L3 Cache: 3072K NUMA node0 CPU(s): 0 Flags: fpu vme de pse tsc msr pae mce cx8 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 arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm epb tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid xsaveopt dtherm ida arat pln pts 

我已将HDD从一台配备Intel i3 CPU的笔记本电脑更换为现在配备Intel i5 CPU的Acer笔记本电脑。

我已经解决了它,从Ubuntu重新安装。