BIOS says i have 16gbs installed but system monitor says i only have 7.8gb

[Domz88]

like the title says. Bios and windows 10 says i have 16gbs installed, but my linux mint 20.2 64 bit says i only have 7.8gbs under system monitor. i tried googling the answer but i didnt find anything to fix the problem.

[all41]

What does the terminal command report:

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sudo inxi -m

[Domz88]

hi

[Domz88]

What does the terminal command report:

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sudo inxi -m

RAM: total: 7.78 GiB used: 2.13 GiB (27.3%)
Array-1: capacity: 128 GiB slots: 4 EC: None
Device-1: DIMM 0 size: 8 GiB speed: 2133 MT/s
Device-2: DIMM 1 size: No Module Installed
Device-3: DIMM 0 size: 8 GiB speed: 2133 MT/s
Device-4: DIMM 1 size: No Module Installed
Top

[all41]

As you can see there is 16gb of ram recognized by Linux.
Some of this may be relegated to graphics

[Domz88]

so theres nothing to fix?

[all41]

you will get more focused help by supplying system info as suggested
in the forum rules "how to get help" posted here:
http://forums.linuxmint.com/viewtopic.php?f=17&t=83444
It's a quick read-thru--#5 is important

[Domz88]

right sorry im new to this well here it is.................

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System:
  Kernel: 5.4.0-86-generic x86_64 bits: 64 compiler: gcc v: 9.3.0 
  Desktop: MATE 1.24.0 wm: marco dm: LightDM Distro: Linux Mint 20.2 Uma 
  base: Ubuntu 20.04 focal 
Machine:
  Type: Desktop System: Gigabyte product: B450M DS3H v: N/A serial: <filter> 
  Mobo: Gigabyte model: B450M DS3H-CF v: x.x serial: <filter> 
  UEFI: American Megatrends v: F40 date: 05/16/2019 
Battery:
  Device-1: sony_controller_battery_a4:ae:12:b6:73:fc model: N/A serial: N/A 
  charge: N/A status: Full 
CPU:
  Topology: 6-Core model: AMD Ryzen 5 2600 bits: 64 type: MT MCP arch: Zen+ 
  rev: 2 L2 cache: 3072 KiB 
  flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm 
  bogomips: 81437 
  Speed: 1439 MHz min/max: 1550/3400 MHz Core speeds (MHz): 1: 1376 2: 1376 
  3: 1546 4: 1547 5: 1410 6: 1376 7: 1547 8: 1547 9: 1476 10: 1545 11: 1452 
  12: 1521 
Graphics:
  Device-1: AMD Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] 
  vendor: Sapphire Limited driver: amdgpu v: kernel bus ID: 06:00.0 
  chip ID: 1002:67df 
  Display: x11 server: X.Org 1.20.11 driver: amdgpu,ati 
  unloaded: fbdev,modesetting,vesa compositor: marco 
  resolution: 1920x1080~60Hz 
  OpenGL: renderer: Radeon RX 580 Series (POLARIS10 DRM 3.35.0 
  5.4.0-86-generic LLVM 12.0.0) 
  v: 4.6 Mesa 21.0.3 direct render: Yes 
Audio:
  Device-1: AMD Ellesmere HDMI Audio [Radeon RX 470/480 / 570/580/590] 
  vendor: Sapphire Limited driver: snd_hda_intel v: kernel bus ID: 06:00.1 
  chip ID: 1002:aaf0 
  Device-2: AMD Family 17h HD Audio vendor: Gigabyte driver: snd_hda_intel 
  v: kernel bus ID: 08:00.3 chip ID: 1022:1457 
  Device-3: Sony DualShock 4 [CUH-ZCT2x] type: USB 
  driver: snd-usb-audio,sony,usbhid bus ID: 1-10:8 chip ID: 054c:09cc 
  Sound Server: ALSA v: k5.4.0-86-generic 
Network:
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet 
  vendor: Gigabyte driver: r8169 v: kernel port: f000 bus ID: 04:00.0 
  chip ID: 10ec:8168 
  IF: enp4s0 state: up speed: 100 Mbps duplex: full mac: <filter> 
Drives:
  Local Storage: total: 577.55 GiB used: 29.15 GiB (5.0%) 
  ID-1: /dev/sda vendor: Intel model: SSDSA2M120G2GC size: 111.79 GiB 
  speed: 3.0 Gb/s serial: <filter> 
  ID-2: /dev/sdb vendor: Western Digital model: WDS500G2B0A-00SM50 
  size: 465.76 GiB speed: 6.0 Gb/s serial: <filter> 
Partition:
  ID-1: / size: 456.96 GiB used: 29.15 GiB (6.4%) fs: ext4 dev: /dev/sdb2 
Sensors:
  System Temperatures: cpu: 95.8 C mobo: N/A gpu: amdgpu temp: 51 C 
  Fan Speeds (RPM): N/A gpu: amdgpu fan: 757 
Repos:
  No active apt repos in: /etc/apt/sources.list 
  Active apt repos in: /etc/apt/sources.list.d/google-chrome.list 
  1: deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main
  Active apt repos in: /etc/apt/sources.list.d/official-package-repositories.list 
  1: deb http://packages.linuxmint.com uma main upstream import backport #id:linuxmint_main
  2: deb http://archive.ubuntu.com/ubuntu focal main restricted universe multiverse
  3: deb http://archive.ubuntu.com/ubuntu focal-updates main restricted universe multiverse
  4: deb http://archive.ubuntu.com/ubuntu focal-backports main restricted universe multiverse
  5: deb http://security.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
  6: deb http://archive.canonical.com/ubuntu/ focal partner
  Active apt repos in: /etc/apt/sources.list.d/pcsx2-team-pcsx2-daily-focal.list 
  1: deb http://ppa.launchpad.net/pcsx2-team/pcsx2-daily/ubuntu focal main
Info:
  Processes: 287 Uptime: 2h 44m Memory: 7.78 GiB used: 2.25 GiB (28.9%) 
  Init: systemd v: 245 runlevel: 5 Compilers: gcc: 9.3.0 alt: 9 Shell: bash 
  v: 5.0.17 running in: mate-terminal inxi: 3.0.38 

[AZgl1800]

I am going to suggest that the RAM modules are not properly inserted, and therefore not presenting you with "Contiguous memory" space.

Notice how it says Module 2 is missing

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RAM: total: 7.78 GiB used: 2.13 GiB (27.3%)
Array-1: capacity: 128 GiB slots: 4 EC: None
Device-1: DIMM 0 size: 8 GiB speed: 2133 MT/s
Device-2: DIMM 1 size: No Module Installed
Device-3: DIMM 0 size: 8 GiB speed: 2133 MT/s
Device-4: DIMM 1 size: No Module Installed
Top

Open up the box, and move the RAM out of slot #3 and put it in slot #2, then boot up again and rerun the tests.



https://www.gigabyte.com/Motherboard/B4 ... -rev-1x#kf

[Domz88]

well i took the ram installed on the 3rd slot and stuck it in the second slot and now its showing me 16 gbs on system monitor thanks for the help guys. is my 3rd slot broken or something??

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Memory:
  RAM: total: 15.65 GiB used: 1.54 GiB (9.8%) 
  Array-1: capacity: 128 GiB slots: 4 EC: None 
  Device-1: DIMM 0 size: 8 GiB speed: 2133 MT/s 
  Device-2: DIMM 1 size: 8 GiB speed: 2133 MT/s 
  Device-3: DIMM 0 size: No Module Installed 
  Device-4: DIMM 1 size: No Module Installed

[GELvdH]

Probably not. It may be that your bios needs contiguous chips to acknowledge the memory.

[Aztaroth]

Not directly related to your issue, but is this normal :

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System Temperatures: cpu: 95.8 C

[Domz88]

a wire was blocking my cpu fan . i noticed it too .its back to normal 40 degrees idle

[rene]

well i took the ram installed on the 3rd slot and stuck it in the second slot and now its showing me 16 gbs on system monitor thanks for the help guys.

Note that this is very much not advised; you are now running in single-channel mode, literally halving your memory bandwidth. See pg. 4 and 9/10 of

https://download.gigabyte.com/FileList/ ... e_1101.pdf

With the slots from the CPU side denoted 4, 2, 3, 1 (pg. 4) you want to install two DIMMs in either 1+2 (best) or 3+4. I.e., with one gap indeed. I expect a DIMM was just not seated fully; that if you maybe after cleaning/inspecting slot and DIMM reeinsert it in the old configuration that all would be fine. A second option is your CPU not being seated fully correctly; a bad pin can easily have as effect loss of a memory channel.

Any case I would not leave it at this current situation; it's suboptimal, and you may be papering over an issue with your CPU(-seating).

[EDIT] https://www.youtube.com/watch?v=NTFN_RI1fIU

[AZgl1800]

well i took the ram installed on the 3rd slot and stuck it in the second slot and now its showing me 16 gbs on system monitor thanks for the help guys. is my 3rd slot broken or something??

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Memory:
  RAM: total: 15.65 GiB used: 1.54 GiB (9.8%) 
  Array-1: capacity: 128 GiB slots: 4 EC: None 
  Device-1: DIMM 0 size: 8 GiB speed: 2133 MT/s 
  Device-2: DIMM 1 size: 8 GiB speed: 2133 MT/s 
  Device-3: DIMM 0 size: No Module Installed 
  Device-4: DIMM 1 size: No Module Installed

Memory MUST BE in Contiguous Blocks, or it will not show up, nor will it be used properly.
That is why I suggested that you move block 3 to block 2.


Note how my laptop is setup:

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$ sudo inxi -m
[sudo] password for john:  
Memory:    RAM: total: 15.49 GiB used: 2.26 GiB (14.6%) 
           Array-1: capacity: 64 GiB slots: 4 EC: None 
           Device-1: ChannelA-DIMM0 size: 16 GiB speed: 2667 MT/s 
           Device-2: ChannelA-DIMM1 size: No Module Installed 
           Device-3: ChannelB-DIMM0 size: No Module Installed 
           Device-4: ChannelB-DIMM1 size: No Module Installed 

[rene]

Memory MUST BE in Contiguous Blocks, or it will not show up, nor will it be used properly.

That is not true physically, even if only in the sense of sequentially numbered and/or placed DIMM slots not equaling logically "Contiguous Blocks" of RAM.

Please see that linked board manual for RAM placing; his is also in fact the standard situation these days: in a desktop board with 4 slots you let two DIMMs occupy the slot farthest away from the CPU, skip one, use one.

Admittedlly depending on from which side poster and/or the inxi -m output start counting he likely now has a suboptimal single-channel placing at best, as said more likely just now papered over a dead RAM channel at worst, it in turn a fairly likely result of a bad CPU seating and/or a bent/broken pin on said CPU. Since if all was right, originally his RAM placing would've worked, only then just in single channel mode.

Anyways. Again, just see that manual. And/or the underside of that DIMM and/or CPU...

[all41]

+1 There are two memory channels. 8gb in each is superior to 16gb in a single channel.
Move your memory chips back