Linux has several commands to check hardware information. You can use them to check what graphics card (also refer to as video card) do you have. Let me show you a couple of commands to get GPU information in Linux. Check graphics card details in Linux command line. Most of the system administrators checks CPU & Memory utilization when they were facing some performance issue. There is lot of utilities are available in Linux to check physical memory.These commands are help us to check the physical RAM present in system, also allow users to check memory utilization in varies aspect. Inxi is a powerful feature-rich command line tool for Linux users when they want to get the information of system hardware, CPU, RAM, Graphics card, drivers, battery, kernel, process information, and more. By default, Inxi is not pre-installed on Linux. In order to use it, install the inxi package by running the following command. RAM location etc. As you are already aware of dmidecode command to get all the system hardware info. We will use the same command for getting our RAM details. To Find RAM details like maximum RAM, location of RAM etc we can use -t option with dmidecode as shown below. 7) How to Find the Memory Information in Linux Using the dmidecode Command. To get memory information using dmidecode, run the dmidecode command with -t option followed by memory keyword. This will print the detailed information about memory such as Physical memory array, memory device, array handle, total width, data width, size, maximum.

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?Discussion

How to identify a device > RAM

How to identify the installed Memory / RAM.

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Many people simply use free, which is available on every Debian system, to list the quantity of RAM installed (detected). Gnome users can install and use the hardinfo. KDE user can use kinfocenter.

free

free is the Unix command to know about free/used/available memory on your system:

under Gnome: hardinfo

Gnomes's System Information (Hardinfo in Menu Applications/System Tools, from package:hardinfo) has an information page on the RAM installed.

under KDE: KInfocenter

KDE's KInfoCenter (in K Menu / System / KInfoCenter Info Center, from package:kcontrol) has an information page on the RAM installed.

dmidecode

dmidecode can be used to query the motherboards DMI zone about RAM, Ram Slot(s) and Memory Controller:

dmidecode -t memory is equivalent to running the 4 commands below (i.e dmidecode -t 5 -t 6 -t 16 -t 17)

Memory Device

Memory Controller Information

Memory Module Information

lshw

Linux get ram slots online

You can also check information about RAM (like speed, type, etc) using lshw (from package lshw).

References

  • manpages: free(1), dmidecode(8)

Running 18.2 XFCE (as a clean install) with 2x 2GB DDR2 PC2 4200 533Mhz RAM, only problem was video editing needed more RAM.
Had two empty slots, so stuck two more in. Now, when I turn the machine on, it comes up a blank screen. OK, power down, power back up, it come to grub screen. Select the only OS (Linux Mint 18.2 64bit XFCE) and sometimes it loads, and sometimes the message 'kernel not valid ELF file' comes up. Power down, power up, repeat until it boots right. No rhyme or reason.
So I upgraded the kernel from 4.08.0-53 to 4.10.0-42 (this was the upgrade offered in update-manager)
Still pops the 'not valid ELF file' a couple of times before I get a successful boot.

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Before I start chasing rabbits, I'd like some advice. Here's my machine's info:

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System: Host: bruce-OptiPlex-GX620 Kernel: 4.10.0-42-generic x86_64 (64 bit gcc: 5.4.0)
Desktop: Xfce 4.12.3 (Gtk 2.24.28) Distro: Linux Mint 18.2 Sonya
Machine: System: Dell product: OptiPlex GX620
Mobo: Dell model: 0PY423 Bios: Dell v: A07 date: 03/31/2006
CPU: Single core Intel Pentium 4 (-HT-) cache: 1024 KB
flags: (lm nx sse sse2 sse3) bmips: 5985
clock speeds: max: 2992 MHz 1: 2992 MHz 2: 2992 MHz
Do I start with a bios update? There's both an A10 and A11 available. However, they are windows .exe files, so I'm unsure how to do that with a linux install.
Altho the motherboard has 4 dimm slots, I've read that it won't recognise dimm3 or dimm4. Obviously, mine does. lshw sees them. But this didn't happen until I put sticks into these slots. Is there an explanation for this?
Do I have a grub problem, and how would I trouble-shoot this?

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Any other suggestions?
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