Ubuntu“无法随处看到”超过 2GB 的 Ram

Ubuntu“无法随处看到”超过 2GB 的 Ram

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:

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