Debian does not recognise RAM although BIOS does
by Simon2019 from LinuxQuestions.org on (#4V7DN)
System: Debian (stable release from October 2019)
Hardware: J4205-itx => link
I recently installed the system, but it seems Debian is not using the whole RAM. I only installed nextcloud (which comes with an apache server, php atc). Here is some output that might be helpful:
Code:root@debian-simon:/home/simon# free
total used free shared buff/cache available
Mem: 1453848 808424 191980 36952 453444 429164
Swap: 7771128 215552 7555576
root@debian-simon:/home/simon# sudo dmidecode | sed -n '/^Memory Device$/,/^$/p'
Memory Device
Array Handle: 0x000E
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: SODIMM
Set: None
Locator: ChannelA-DIMM0
Bank Locator: BANK 0
Type: DDR3
Type Detail: Synchronous
Speed: 1333 MT/s
Manufacturer: Samsung
Serial Number: 67422D51
Asset Tag: 9876543210 [Titel anhand dieser ISBN in Citavi-Projekt i1/4bernehmen]
Part Number: M471B5273DH0-CH9
Rank: 2
Configured Memory Speed: 1333 MT/s
Minimum Voltage: 1.5 V
Maximum Voltage: 1.5 V
Configured Voltage: 1.5 V
Memory Device
Array Handle: 0x000E
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 2048 MB
Form Factor: SODIMM
Set: None
Locator: ChannelA-DIMM1
Bank Locator: BANK 1
Type: DDR3
Type Detail: Synchronous
Speed: 1333 MT/s
Manufacturer: Unde
Serial Number: 422FD906
Asset Tag: 9876543210
[Titel anhand dieser ISBN in Citavi-Projekt i1/4bernehmen] Part Number: RMT3020EF48E8W1333
Rank: 2
Configured Memory Speed: 1333 MT/s
Minimum Voltage: 1.5 V
Maximum Voltage: 1.5 V
Configured Voltage: 1.5 V
root@debian-simon:/home/simon# dmesg | grep -i memory
[ 0.016839] initial memory mapped: [mem 0x00000000-0 [Titel anhand dieser ISBN in Citavi-Projekt i1/4bernehmen] x1cffffff]
[ 0.017385] Early memory node ranges
[ 0.038097] Reserving Intel graphics memory at [mem 0x60000000-0x7fffffff]
[ 0.038453] PM: Registered nosave memory: [mem 0x00000000-0x00000fff]
[ 0.038457] PM: Registered nosave memory: [mem 0x0009b000-0x0009bfff]
[ 0.038458] PM: Registered nosave memory: [mem 0x0009c000-0x0009ffff]
[ 0.038460] PM: Registered nosave memory: [mem 0x000a0000-0x000dffff]
[ 0.038462] PM: Registered nosave memory: [mem 0x000e0000-0x000fffff]
[ 0.038465] PM: Registered nosave memory: [mem 0x10000000-0x12150fff]
[ 0.098144] Memory: 1421780K/1480704K available (6630K kernel code, 639K rwdata, 2076K rodata, 840K init, 436K bss, 58924K reserved, 0K cma-reserved, 618212K highmem)
[ 0.098153] virtual kernel memory layout:
[ 0.154868] Freeing SMP alternatives memory: 24K
[ 1.436131] Freeing initrd memory: 31204K
[ 3.391608] Freeing unused kernel image memory: 840K
Hardware: J4205-itx => link
I recently installed the system, but it seems Debian is not using the whole RAM. I only installed nextcloud (which comes with an apache server, php atc). Here is some output that might be helpful:
Code:root@debian-simon:/home/simon# free
total used free shared buff/cache available
Mem: 1453848 808424 191980 36952 453444 429164
Swap: 7771128 215552 7555576
root@debian-simon:/home/simon# sudo dmidecode | sed -n '/^Memory Device$/,/^$/p'
Memory Device
Array Handle: 0x000E
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: SODIMM
Set: None
Locator: ChannelA-DIMM0
Bank Locator: BANK 0
Type: DDR3
Type Detail: Synchronous
Speed: 1333 MT/s
Manufacturer: Samsung
Serial Number: 67422D51
Asset Tag: 9876543210 [Titel anhand dieser ISBN in Citavi-Projekt i1/4bernehmen]
Part Number: M471B5273DH0-CH9
Rank: 2
Configured Memory Speed: 1333 MT/s
Minimum Voltage: 1.5 V
Maximum Voltage: 1.5 V
Configured Voltage: 1.5 V
Memory Device
Array Handle: 0x000E
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 2048 MB
Form Factor: SODIMM
Set: None
Locator: ChannelA-DIMM1
Bank Locator: BANK 1
Type: DDR3
Type Detail: Synchronous
Speed: 1333 MT/s
Manufacturer: Unde
Serial Number: 422FD906
Asset Tag: 9876543210
[Titel anhand dieser ISBN in Citavi-Projekt i1/4bernehmen] Part Number: RMT3020EF48E8W1333
Rank: 2
Configured Memory Speed: 1333 MT/s
Minimum Voltage: 1.5 V
Maximum Voltage: 1.5 V
Configured Voltage: 1.5 V
root@debian-simon:/home/simon# dmesg | grep -i memory
[ 0.016839] initial memory mapped: [mem 0x00000000-0 [Titel anhand dieser ISBN in Citavi-Projekt i1/4bernehmen] x1cffffff]
[ 0.017385] Early memory node ranges
[ 0.038097] Reserving Intel graphics memory at [mem 0x60000000-0x7fffffff]
[ 0.038453] PM: Registered nosave memory: [mem 0x00000000-0x00000fff]
[ 0.038457] PM: Registered nosave memory: [mem 0x0009b000-0x0009bfff]
[ 0.038458] PM: Registered nosave memory: [mem 0x0009c000-0x0009ffff]
[ 0.038460] PM: Registered nosave memory: [mem 0x000a0000-0x000dffff]
[ 0.038462] PM: Registered nosave memory: [mem 0x000e0000-0x000fffff]
[ 0.038465] PM: Registered nosave memory: [mem 0x10000000-0x12150fff]
[ 0.098144] Memory: 1421780K/1480704K available (6630K kernel code, 639K rwdata, 2076K rodata, 840K init, 436K bss, 58924K reserved, 0K cma-reserved, 618212K highmem)
[ 0.098153] virtual kernel memory layout:
[ 0.154868] Freeing SMP alternatives memory: 24K
[ 1.436131] Freeing initrd memory: 31204K
[ 3.391608] Freeing unused kernel image memory: 840K