Hi Matthew, I appreciate your help. I try to repair this problem. First, I diagnostic from the BIOS but it doesn't work.
Second, I try to unplug my wireless mouse then reboot the laptop more than five times. The memory allocation looks good. Maybe the bug comes from the bios. Do you have any suggestions to deal with this bug? Tank you very much. Ray -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-signed-hwe-6.2 in Ubuntu. https://bugs.launchpad.net/bugs/2039382 Title: Kernel cannot detect the full memory Status in linux-signed-hwe-6.2 package in Ubuntu: New Bug description: 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) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-6.2/+bug/2039382/+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
