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Hi ubuntu,
I use ubuntu22.04 in my laptop. When I open the laptop, sometimes ubuntu cannot
detect all memory.
My laptop has 16GB memory, sometimes ubuntu detect 2.5GB.
I already use memtest86 test the health of the memory. It doesn’t show any
error.
I think this problem is from the OS. Please help me!
Thank you very much
Ray
PS.
uname -a:
Linux ubuntu 6.2.0-34-generic #34~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Sep 7
13:12:03 UTC 2 x86_64 x86_64 x86_64 GNU/Linux
lshw -C memory:
*-firmware
description: BIOS
vendor: Dell Inc.
physical id: 0
version: 1.26.0
date: 06/13/2023
size: 64KiB
capacity: 16MiB
capabilities: pci pnp upgrade shadowing cdboot bootselect edd
int13floppynec int13floppy1200 int13floppy720 int13floppy2880 int5printscreen
int9keyboard int14serial int17printer acpi usb smartbattery
biosbootspecification netboot uefi
*-memory
description: System Memory
physical id: 41
slot: System board or motherboard
size: 16GiB
*-bank:0
description: DIMM [empty]
physical id: 0
slot: ChannelA-DIMM0
*-bank:1
description: SODIMM DDR4 Synchronous Unbuffered (Unregistered) 2400
MHz (0.4 ns)
product: HMA82GS6AFR8N-UH
vendor: Hynix Semiconductor (Hyundai Electronics)
physical id: 1
serial: 4247000D
slot: DIMM B
size: 16GiB
width: 64 bits
clock: 2400MHz (0.4ns)
*-cache:0
description: L1 cache
physical id: 45
slot: L1 Cache
size: 256KiB
capacity: 256KiB
capabilities: synchronous internal write-back unified
configuration: level=1
*-cache:1
description: L2 cache
physical id: 46
slot: L2 Cache
size: 1MiB
capacity: 1MiB
capabilities: synchronous internal write-back unified
configuration: level=2
*-cache:2
description: L3 cache
physical id: 47
slot: L3 Cache
size: 6MiB
capacity: 6MiB
capabilities: synchronous internal write-back unified
configuration: level=3
*-memory UNCLAIMED
description: Memory controller
product: Sunrise Point-LP PMC
vendor: Intel Corporation
physical id: 1f.2
bus info: pci@0000:00:1f.2
version: 21
width: 32 bits
clock: 33MHz (30.3ns)
configuration: latency=0
resources: memory:df42c000-df42ffff
ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: linux-image-6.2.0-34-generic 6.2.0-34.34~22.04.1
ProcVersionSignature: Ubuntu 6.2.0-34.34~22.04.1-generic 6.2.16
Uname: Linux 6.2.0-34-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sun Oct 15 17:53:09 2023
InstallationDate: Installed on 2023-10-08 (7 days ago)
InstallationMedia: Ubuntu 22.04.3 LTS "Jammy Jellyfish" - Release amd64
(20230807.2)
SourcePackage: linux-signed-hwe-6.2
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: linux-signed-hwe-6.2 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug jammy
--
Kernel cannot detect the full memory
https://bugs.launchpad.net/bugs/2039382
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