Eu instalei recentemente 4Gb de RAM para um Ubuntu 12.04 32bit existente. Não está sendo reconhecido, apenas 3,2Gb está aparecendo, Veja:
administrator@Root2:~$ free
total used free shared buffers cached
Mem: 3355256 1251112 2104144 0 48664 391972
-/+ buffers/cache: 810476 2544780
O sistema é compatível com o PAE, consulte:
administrator@Root2:~$ grep --color=always -i PAE /proc/cpuinfo
flags : 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 nx lm constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm dts
flags : 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 nx lm constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm dts
O sistema foi totalmente corrigido e tentou executar a atualização manual do PAE. Consulte:
administrator@Root2:~$ sudo apt-get install linux-generic-pae linux-headers-generic-pae
[sudo] password for administrator:
Reading package lists... Done
Building dependency tree
Reading state information... Done
linux-generic-pae is already the newest version.
linux-headers-generic-pae is already the newest version.
The following packages were automatically installed and are no longer required:
language-pack-zh-hans language-pack-kde-en language-pack-kde-zh-hans
language-pack-kde-en-base kde-l10n-engb kde-l10n-zhcn
language-pack-zh-hans-base firefox-locale-zh-hans
language-pack-kde-zh-hans-base
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Não sei mais o que tentar reconhecer a memória física completa instalada além de carregar 64 bits.
Alguma ideia?
Obrigado!
saída do uname -r
administrator@Root2:~$ uname -r
3.2.0-24-generic-pae