我有一台旧笔记本电脑(compaq NX 7300 - 32 位 CPU),运行正常,但速度很慢。它有 2GB 内存,我尝试使用从一台坏掉的笔记本电脑上取下的 2 个不同的 SODIMM(每个 1GB)升级到 3GB。
使用两个 SODIMM(不同品牌)时,我得到了相同的奇怪结果:BIOS 看到 3GB,但 Ubuntu(16.04)在 free 和 meminfo 中仍然显示 2,但 lshw 可以看到第二个内存模块。BIOS 已升级到最新版本,没有任何内存配置选项。
你能帮助我理解吗?
尤纳姆
Linux ubumon 4.4.0-66-generic #87-Ubuntu SMP Fri Mar 3 15:27:09 UTC 2017 i686 i686 i686 GNU/Linux
免费-m
total used free shared buff/cache available
Mem: 2005 687 121 250 1196 820
Swap: 2037 25 2012
内存信息
MemTotal: 2053932 kB
MemFree: 249548 kB
MemAvailable: 896096 kB
Buffers: 197416 kB
Cached: 881856 kB
SwapCached: 1464 kB
Active: 900048 kB
Inactive: 785352 kB
Active(anon): 393312 kB
Inactive(anon): 469320 kB
Active(file): 506736 kB
Inactive(file): 316032 kB
Unevictable: 204 kB
Mlocked: 204 kB
HighTotal: 1175368 kB
HighFree: 140016 kB
LowTotal: 878564 kB
LowFree: 109532 kB
SwapTotal: 2086908 kB
SwapFree: 2057492 kB
Dirty: 336 kB
Writeback: 0 kB
AnonPages: 604944 kB
Mapped: 311724 kB
Shmem: 256504 kB
Slab: 76716 kB
SReclaimable: 56284 kB
SUnreclaim: 20432 kB
KernelStack: 3960 kB
PageTables: 11952 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 3113872 kB
Committed_AS: 4487840 kB
VmallocTotal: 122880 kB
VmallocUsed: 0 kB
VmallocChunk: 0 kB
AnonHugePages: 151552 kB
CmaTotal: 0 kB
CmaFree: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 43000 kB
DirectMap2M: 870400 kB
lshw 内存
*-memory
description: System Memory
physical id: a
slot: System board or motherboard
size: 3GiB
*-bank:0
description: SODIMM DDR2 Synchronous 975 MHz (1,0 ns)
product: EBE11UE6ACUA-8G-E
vendor: 7F7FFE0000000000
physical id: 0
serial: 0E7B1B6A
slot: DIMM #1
size: 1GiB
width: 64 bits
clock: 975MHz (1.0ns)
*-bank:1
description: SODIMM DDR2 Synchronous 975 MHz (1,0 ns)
product: 99P5471-013.A00LF
vendor: Kingston
physical id: 1
serial: 00000000
slot: DIMM #2
size: 2GiB
width: 64 bits
clock: 975MHz (1.0ns)
CPU信息
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 14
model name : Intel(R) Celeron(R) M CPU 440 @ 1.86GHz
stepping : 12
microcode : 0x54
cpu MHz : 1861.861
cache size : 1024 KB
physical id : 0
siblings : 1
core id : 0
cpu cores : 1
apicid : 0
initial apicid : 0
fdiv_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov clflush dts acpi mmx fxsr sse sse2 ss tm pbe nx constant_tsc arch_perfmon bts aperfmperf pni monitor tm2 xtpr pdcm dtherm
bugs :
bogomips : 3723.72
clflush size : 64
cache_alignment : 64
address sizes : 32 bits physical, 32 bits virtual
power management: