Hello everyone. An old issue that everyone asks in every linux install: Two installed ram modules, but only half of ram is showing on system. The mobo doesn't put the modules in dual channel (even if the vendor support the ram brand). and i'm using 1024 mb for shared graphics (AMD® A8-7600 radeon r7, 10 compute cores 4c+6g × 4). The system shouldn't use the full memory?
sudo dmidecode -t 17:
dmidecode 3.2
Getting SMBIOS data from sysfs.
SMBIOS 2.8 present.
Handle 0x0012, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0010
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: DIMM
Set: None
Locator: DIMM 0
Bank Locator: CHANNEL A
Type: DDR3
Type Detail: Synchronous Unbuffered (Unregistered)
Speed: 1866 MT/s
Manufacturer: Kingston
Serial Number: 0F161E95
Asset Tag: A1_AssetTagNum0
Part Number: KHX1866C10D3/4G
Rank: 1
Configured Memory Speed: 1866 MT/s
Minimum Voltage: 1.5 V
Maximum Voltage: 1.5 V
Configured Voltage: 1.5 V
Handle 0x0013, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0010
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: DIMM
Set: None
Locator: DIMM 0
Bank Locator: CHANNEL B
Type: DDR3
Type Detail: Synchronous Unbuffered (Unregistered)
Speed: 1866 MT/s
Manufacturer: Kingston
Serial Number: 2230570D
Asset Tag: A1_AssetTagNum1
Part Number: KHX1866C10D3/4G
Rank: 1
Configured Memory Speed: 1866 MT/s
Minimum Voltage: 1.5 V
Maximum Voltage: 1.5 V
Configured Voltage: 1.5 V
cat /proc/meminfo
MemTotal: 3021440 kB
MemFree: 1476680 kB
MemAvailable: 1882516 kB
Buffers: 30872 kB
Cached: 556900 kB
SwapCached: 0 kB
Active: 897564 kB
Inactive: 364024 kB
Active(anon): 675540 kB
Inactive(anon): 67688 kB
Active(file): 222024 kB
Inactive(file): 296336 kB
Unevictable: 32 kB
Mlocked: 32 kB
SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 52 kB
Writeback: 0 kB
AnonPages: 673840 kB
Mapped: 358628 kB
Shmem: 69420 kB
KReclaimable: 45932 kB
Slab: 110404 kB
SReclaimable: 45932 kB
SUnreclaim: 64472 kB
KernelStack: 9184 kB
PageTables: 12796 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 1510720 kB
Committed_AS: 3537272 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 22364 kB
VmallocChunk: 0 kB
Percpu: 2304 kB
AnonHugePages: 0 kB
ShmemHugePages: 0 kB
ShmemPmdMapped: 0 kB
FileHugePages: 0 kB
FilePmdMapped: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
Hugetlb: 0 kB
DirectMap4k: 247820 kB
DirectMap2M: 2854912 kB
DirectMap1G: 0 kB
Any ideas?
Just for curiosity, i've made Windows 10 use the full memory by lowering RAM frequency.
