| -=HIGHHIGH=- |
06-23-2018 08:37 PM |
Unable to use all RAM
Hey folks!
I'm running CentOS (x86_64) with an old windows laptop and can only use 3.13GB RAM, despite the BIOS seeing 8GB.
Code:
[root@highhigh ~]# uname -a
Linux highhigh 3.10.0-862.3.3.el7.x86_64 #1 SMP Fri Jun 15 04:15:27 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
I've tried various things and have searched online and bashed in commands to no end, it's time I asked for help from the pros..
First off, please note that I'm aware the onboard graphics is most likely nabbing around 512MB!! :)
Unable to flash the bios, the bios updates are only available as .exe files from Lenovo.
Using "sudo lshw" we can see the memory:
Code:
[root@highhigh ~]# sudo lshw
highhigh
description: Notebook
product: 20152 (LENOVO_MT_20152)
vendor: LENOVO
version: LENOVO IdeaPad Z585
serial: QB06781354OA3OK
width: 64 bits
capabilities: smbios-2.7 dmi-2.7 smp vsyscall32
configuration: boot=normal chassis=notebook family=IDEAPAD sku=LENOVO_MT_20152 uuid=D75186FC-11A7-272E-D1C4-089E0191DBB4
*-core
description: Motherboard
product: Lenovo
vendor: LENOVO
physical id: 0
version: 31900003WIN8 STD MLT
serial: QB06781354
slot: Chassis Location Unknown
*-firmware
description: BIOS
vendor: LENOVO
physical id: 0
version: 60CN97WW
date: 08/27/2013
size: 128KiB
capacity: 8MiB
capabilities: pci upgrade shadowing cdboot bootselect edd int5printscreen int9keyboard int14serial int17printer int10video pc98 acpi usb biosbootspecification netboot
*-memory
description: System Memory
physical id: b
slot: System board or motherboard
size: 8GiB
*-bank:0
description: SODIMM DDR3 Synchronous 1600 MHz (0.6 ns)
product: HMT351S6EFR8C-PB
vendor: Hynix/Hyundai
physical id: 0
serial: 2C125379
slot: DIMM 0
size: 4GiB
width: 64 bits
clock: 1600MHz (0.6ns)
*-bank:1
description: SODIMM DDR3 Synchronous 1600 MHz (0.6 ns)
product: HMT351S6EFR8C-PB
vendor: Hynix/Hyundai
physical id: 1
serial: 2CC25377
slot: DIMM 0
size: 4GiB
width: 64 bits
clock: 1600MHz (0.6ns)
*-cpu
description: CPU
product: AMD A8-4500M APU with Radeon(tm) HD Graphics
vendor: Advanced Micro Devices [AMD]
vendor_id: AuthenticAMD
physical id: 11
bus info: cpu@0
version: AMD A8-4500M APU with Radeon(tm) HD Graphics
slot: Socket FS1r2
size: 1400MHz
capacity: 1900MHz
width: 64 bits
clock: 100MHz
capabilities: lm fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp x86-64 constant_tsc art rep_good nopl nonstop_tsc extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core perfctr_nb cpb hw_pstate retpoline_amd vmmcall bmi1 arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold ssbd cpufreq
configuration: cores=4 enabledcores=4 threads=4
*-cache:0
description: L1 cache
physical id: 12
slot: L1 Cache
size: 192KiB
capacity: 192KiB
clock: 1GHz (1.0ns)
capabilities: pipeline-burst internal write-back unified
configuration: level=1
*-cache:1
description: L2 cache
physical id: 13
slot: L2 Cache
size: 4MiB
capacity: 4MiB
clock: 1GHz (1.0ns)
capabilities: pipeline-burst internal write-back unified
configuration: level=2
(I wont paste the rest unless requested, seems invalid to this thread)
We can see here that only some of the memory is currently useable:
Code:
[root@highhigh ~]# free -m
total used free shared buff/cache available
Mem: 3209 2814 169 2 225 149
Swap: 1885 15 1870
The board is PAE compatible, from the looks of below:
Code:
[root@highhigh ~]# grep -i pae /proc/cpuinfo
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc art rep_good nopl nonstop_tsc extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core perfctr_nb cpb hw_pstate retpoline_amd vmmcall bmi1 arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold ssbd
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc art rep_good nopl nonstop_tsc extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core perfctr_nb cpb hw_pstate retpoline_amd vmmcall bmi1 arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold ssbd
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc art rep_good nopl nonstop_tsc extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core perfctr_nb cpb hw_pstate retpoline_amd vmmcall bmi1 arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold ssbd
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc art rep_good nopl nonstop_tsc extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core perfctr_nb cpb hw_pstate retpoline_amd vmmcall bmi1 arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold ssbd
thanks in advance, any suggestions are welcomed with open arms!! |
