Meu AMD RX 580 não usa toda a sua memória (8GB), mas apenas até 2GB, o que poderia estar errado?
Eu uso o Ubuntu 17.10 com o kernel mais recente (4.13)
minha GPU aparece como Radeon RX 580 Series (POLARIS10 / DRM 3.18.0 / 4.13.0-18-genérica, LLVM 5.0.0) na visão geral (eu tenho mesa 17.3)
Os benchmarks veem apenas 256 a 2560 MB
ao entrar
echo $"VRAM: "$(($(grep -P -o -i "(?<=memory:).*(?=kbytes)" /var/log/Xorg.0.log) / 1024))$" Mb"
Eu recebo VRAM: 2048 Mb
de volta
Ao inserir grep -i memory /var/log/Xorg.0.log
Eu obtenho
[ 34.272] (--) NVIDIA(0): Memory: 2097152 kBytes
[ 34.302] (II) NVIDIA: Using 6144.00 MB of virtual memory for indirect memory
[ 34.405] (==) NVIDIA(0): Disabling shared memory pixmaps
Ao inserir LC_ALL=C lspci -v | grep -EA10 "3D|VGA" | grep 'prefetchable'
Eu obtenho
Memory at feb06000 (32-bit, non-prefetchable) [size=4K]
Memory at c0000000 (64-bit, prefetchable) [size=256M]
Memory at d0000000 (64-bit, prefetchable) [size=2M]
Memory at fea00000 (32-bit, non-prefetchable) [size=256K]
Ao inserir sudo lshw -class display
Eu obtenho
*-display
description: VGA compatible controller
product: Ellesmere [Radeon RX 470/480]
vendor: Advanced Micro Devices, Inc. [AMD/ATI]
physical id: 0
bus info: pci@0000:01:00.0
version: e7
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
configuration: driver=amdgpu latency=0
resources: irq:30 memory:c0000000-cfffffff memory:d0000000-d01fffff ioport:e000(size=256) memory:fea00000-fea3ffff memory:c0000-dffff
Ainda não entendi: P