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.
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-lts-utopic in Ubuntu.
https://bugs.launchpad.net/bugs/1434014
Title:
[Lenovo E450] Run test case 'memory/info' is failed.
Status in HWE Next Project:
Incomplete
Status in linux-lts-utopic package in Ubuntu:
New
Bug description:
CID : 201407-15368 Lenovo E450 (A+A) with 14.04.2 (utopic)
Steps:
1. Install 14.04.2 on E450
2. Install Plainbox and run test case 'memory/info'. (This test checks the
amount of memory which is reporting in meminfo against the size of the memory
modules detected by DMI.)
Expected result:
Test result should be pass.
Actual result:
/proc/meminfo reports: 3.13GiB
lshw reports: 4GiB
FAIL: Meminfo reports 930258944 less than lshw, a difference of
21.66%. Only a variance of 20% in reported memory is allowed.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.16.0-30-generic 3.16.0-30.40~14.04.1 [modified:
boot/vmlinuz-3.16.0-30-generic]
ProcVersionSignature: Ubuntu 3.16.0-30.40~14.04.1-generic 3.16.7-ckt3
Uname: Linux 3.16.0-30-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.14.1-0ubuntu3.7
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Mar 19 06:28:49 2015
InstallationDate: Installed on 2015-03-18 (1 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64
(20150218.1)
SourcePackage: linux-lts-utopic
UpgradeStatus: No upgrade log present (probably fresh install)
To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1434014/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
