dmesg in #4 shows memory map as below:
e820: BIOS-provided physical RAM map:
BIOS-e820: [mem 0x0000000000000000-0x000000000009dfff] usable
BIOS-e820: [mem 0x000000000009e000-0x000000000009ffff] reserved
BIOS-e820: [mem 0x00000000000e0000-0x00000000000fffff] reserved
BIOS-e820: [mem 0x0000000000100000-0x00000000a5de3fff] usable
BIOS-e820: [mem 0x00000000a5de4000-0x00000000ae385fff] reserved
BIOS-e820: [mem 0x00000000ae386000-0x00000000ae4a5fff] ACPI NVS
BIOS-e820: [mem 0x00000000ae4a6000-0x00000000ae525fff] ACPI data
BIOS-e820: [mem 0x00000000ae526000-0x00000000afffffff] reserved
BIOS-e820: [mem 0x00000000fec00000-0x00000000fecfffff] reserved
BIOS-e820: [mem 0x00000000fed80000-0x00000000fed80fff] reserved
BIOS-e820: [mem 0x00000000ff800000-0x00000000ffffffff] reserved
BIOS-e820: [mem 0x0000000100000000-0x000000012effffff] usable
It is seen that memory 4gb is declared so there is nothing wrong with it.
BIOS-e820: [mem 0x0000000100000000-0x000000012effffff] usable
The usable memory is allocated in the below two ranges:
BIOS-e820: [mem 0x0000000000100000-0x00000000a5de3fff] usable
BIOS-e820: [mem 0x0000000100000000-0x000000012effffff] usable
The range between fec00000~b000000 is not declared (see below) - that's more
1GB memory space (note: not actual memory). It is not certain whether actual
memory is mapped there but used elsewhere (ex. for as VGA memory) but BIOS
forgot to allocate it.
BIOS-e820: [mem 0x00000000ae526000-0x00000000afffffff] reserved
BIOS-e820: [mem 0x00000000fec00000-0x00000000fecfffff] reserved
This may need attention or confirmation from OEM and perhaps they can
provide a BIOS update.
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https://bugs.launchpad.net/bugs/1434014
Title:
[Lenovo E450] Run test case 'memory/info' is failed.
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