Как уменьшить VRAM / графическую видеопамять в 20.04 LTS

Я использую ноутбук Ryzen 5 и HP 255 G8. Я вижу, что моя общая физическая память составляет 6 ГБ, тогда как фактическая память составляет 8 ГБ. Может ли кто-нибудь помочь, как это можно сделать?

      country@country-HP-255-G8-Notebook-PC:~$  sudo lshw -class memory
[sudo] password for country: *-firmware

description: BIOS vendor: Insyde 
physical id: 0 
version: F.20 
date: 03/11/2021 
size: 128KiB 
capacity: 16MiB 
capabilities: pci upgrade shadowing cdboot bootselect edd int13floppynec int13floppytoshiba int13floppy360 int13floppy1200 int13floppy720 int13floppy2880 int9keyboard int10video acpi usb biosbootspecification uefi *-cache:0 
description: L1 cache 
physical id: 5 
slot: L1 - Cache size: 384KiB 
capacity: 384KiB 
clock: 1GHz (1.0ns) 
capabilities: pipeline-burst internal write-back unified 
configuration: level=1 *-cache:1 
description: L2 cache physical id: 6 slot: L2 - Cache size: 2MiB 
capacity: 2MiB 
clock: 1GHz (1.0ns) 
capabilities: pipeline-burst internal write-back unified 
configuration: level=2 *-cache:2 
description: L3 cache physical id: 7 
slot: L3 - 
Cache size: 4MiB 
capacity: 4MiB 
clock: 1GHz (1.0ns) 
capabilities: pipeline-burst internal write-back unified configuration: level=3 *-memory 
description: System Memory 
physical id: 20 
slot: System board or motherboard 
size: 8GiB *-bank:0 
description: SODIMM DDR4 Synchronous Unbuffered (Unregistered) 2400 MHz (0.4 ns) 
product: AO1P32NC8T1-BBVS vendor: A-DATA Technology physical 
id: 0 serial: 8E990000 
slot: Bottom-slot 1(left) 
size: 8GiB 
width: 64 bits 
clock: 2400MHz (0.4ns) 
*-bank:1 
description: SODIMM DDR Synchronous [empty] 
product: Unknown 
vendor: Unknown 
physical id: 1 
serial: Unknown 
slot: Bottom-slot 2(right)

      country@country-HP-255-G8-Notebook-PC:~$ lspci -vk | grep -EA10 'VGA|3D|Display' 
03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Picasso (rev c2) (prog-if 00 [VGA controller]) 
DeviceName: Broadcom 5762 
Subsystem: Hewlett-Packard Company Picasso 
Flags: bus master, fast devsel, latency 0, IRQ 41 Memory at b0000000 (64-bit, prefetchable) [size=256M] Memory at c0000000 (64-bit, prefetchable) [size=2M] I/O ports at 1000 [size=256] Memory at c0600000 (32-bit, non-prefetchable) [size=512K] Capabilities: Kernel 
driver in use: amdgpu Kernel modules: amdgpu

      country@country-HP-255-G8-Notebook-PC:~$ free -m total used free 
shared buff/cache available Mem: 5950 1070 3741 20 1137 4604 Swap: 2047 0 2047