Arch Linux

driwach

Member

Registered: 2019-12-18

Posts: 7

Linux Read Less RAM

Hi, Guys ,
i Have a weird problem in My System (Arch linux)
Reads less memory (RAM) in total i have 8192 but in linux reads this

 
[driwach@arch ~]$ free --mega
                   total         used         free        shared   buff/cache  available
Mem:           6170        2760         614         187        2795        2948
Swap:          8589           0        8589

Awebb

Member

Registered: 2010-05-06

Posts: 6,688

Re: Linux Read Less RAM

Integrated GPU RAM allocation? See your bios/uefi setup.

driwach

Member

Registered: 2019-12-18

Posts: 7

Re: Linux Read Less RAM

Integrated GPU RAM allocation? See your bios/uefi setup.

Thanks for your reply i've already check it , this just happens when using linux but in other system reads all memory .

Awebb

Member

Registered: 2010-05-06

Posts: 6,688

Re: Linux Read Less RAM

What else have you checked and tried?

loqs

Member

Registered: 2014-03-06

Posts: 19,077

Re: Linux Read Less RAM

What is the output of `dmesg`?

Last edited by loqs (2020-05-06 21:47:51)

driwach

Member

Registered: 2019-12-18

Posts: 7

Re: Linux Read Less RAM

What is the output of `dmesg`?

this part of output showing vram = 2048 but is little high

 
   4.133886] [drm] vm size is 262144 GB, 4 levels, block size is 9-bit, fragment size is 9-bit
[    4.133902] amdgpu 0000:04:00.0: VRAM: 2048M 0x000000F400000000 - 0x000000F47FFFFFFF (2048M used)
[    4.133904] amdgpu 0000:04:00.0: GART: 1024M 0x0000000000000000 - 0x000000003FFFFFFF
[    4.133906] amdgpu 0000:04:00.0: AGP: 267419648M 0x000000F800000000 - 0x0000FFFFFFFFFFFF
[    4.133911] [drm] Detected VRAM RAM=2048M, BAR=2048M
[    4.133912] [drm] RAM width 128bits DDR4
[    4.133997] [TTM] Zone  kernel: Available graphics memory: 3012982 KiB
[    4.133998] [TTM] Zone   dma32: Available graphics memory: 2097152 KiB

full Output here here

sabroad

Member

Registered: 2015-05-24

Posts: 242

Re: Linux Read Less RAM

other system reads all memory

Other systems report installed memory (vs usable).

Linux's free command displays the total memory that can used by the OS (ie. usable) as reported/reserved by the BIOS.

Some BIOS will reserve too much memory if booted in legacy mode. Installing as UEFI may fix this.

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saint_abroad