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!!
