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F26 I got a strange RAM issue

Hello

I'm not sure this can be a bug, but it cannot be an hardware issue (official constructor upgrade kit 4*8Gb material used).

Whatever the setup is on an acerV3-772G that supports up to 32Gb ram (48) just recognize half of it. Also while I user 44096 - 16GB I see only 8Gb instead of 16Gb and below tests reacts exactly the same way :

1-While reading bios state 32Gb = OK 2-While running linux 16Gb are activated. At first I thought it was an hardware issue, but when I run dmidecode I can see my 48192Mo ram bars. 3-While I look at dmesg | grep -i memory I see 5 memory addresses ranges (48192Mo ram bars + 1 video RAM zone).

    # dmidecode 3.1                                                                                                                                                                                [35/809]
Getting SMBIOS data from sysfs. 
SMBIOS 2.7 present.

Handle 0x000E, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x000D
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 8192 MB
Form Factor: SODIMM
Set: None
Locator: DIMM0
Bank Locator: BANK 0
Type: DDR3
Type Detail: Synchronous
Speed: 1600 MT/s
Manufacturer: Unknown
Serial Number: E09028A6
Asset Tag: Unknown
Part Number: CT102464BF160B.C16
Rank: 2
Configured Clock Speed: 1600 MT/s

Handle 0x000F, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x000D
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 8192 MB
Form Factor: SODIMM
Set: None
Locator: DIMM1
Bank Locator: BANK 1
Type: DDR3
Type Detail: Synchronous Speed: 1600 MT/s Manufacturer: Unknown Serial Number: E0902887 Asset Tag: Unknown Part Number: CT102464BF160B.C16 Rank: 2 Configured Clock Speed: 1600 MT/s

Handle 0x0010, DMI type 17, 34 bytes Memory Device Array Handle: 0x000D Error Information Handle: Not Provided Total Width: 64 bits Data Width: 64 bits Size: 8192 MB Form Factor: SODIMM Set: None Locator: DIMM1 Bank Locator: BANK 2 Type: DDR3 Type Detail: Synchronous Speed: 1600 MT/s Manufacturer: Unknown Serial Number: E09027D2 Asset Tag: Unknown Part Number: CT102464BF160B.C16 Rank: 2 Configured Clock Speed: 1600 MT/s

Handle 0x0011, DMI type 17, 34 bytes Memory Device Array Handle: 0x000D Error Information Handle: Not Provided Total Width: 64 bits Data Width: 64 bits Size: 8192 MB Form Factor: SODIMM Set: None Locator: DIMM3 Bank Locator: BANK 3 Type: DDR3 Type Detail: Synchronous Speed: 1600 MT/s Manufacturer: Unknown Serial Number: E0902882 Asset Tag: Unknown Part Number: CT102464BF160B.C16 Rank: 2 Configured Clock Speed: 1600 MT/s

[root@h2g2w ~]#

[root@h2g2w sysctl.d]# dmesg | grep -i "ram" [ 0.000000] e820: BIOS-provided physical RAM map: [ 0.000000] Base memory trampoline at [ffff955a40097000] 97000 size 24576 [ 0.000000] RAMDISK: [mem 0x355c2000-0x36ad8fff] [ 0.013718] Security Framework initialized [ 0.263230] e820: reserve RAM buffer [mem 0x0009d400-0x0009ffff] [ 0.263231] e820: reserve RAM buffer [mem 0x94cb0000-0x97ffffff] [ 0.263232] e820: reserve RAM buffer [mem 0x9a6bf000-0x9bffffff] [ 0.263233] e820: reserve RAM buffer [mem 0x9b000000-0x9bffffff] [ 0.263234] e820: reserve RAM buffer [mem 0x45f600000-0x45fffffff] [ 0.308166] Unpacking initramfs... [ 0.812453] xhci_hcd 0000:00:14.0: hcc params 0x200077c1 hci version 0x100 quirks 0x00009810 [ 0.819502] rtc_cmos 00:02: alarms up to one month, 242 bytes nvram, hpet irqs [ 1.309008] sr 2:0:0:0: [sr0] scsi3-mmc drive: 24x/24x writer dvd-ram cd/rw xa/form2 cdda tray [ 1.418126] systemd[1]: Running in initial RAM disk. [ 1.984423] nouveau 0000:01:00.0: DRM: VRAM: 4096 MiB [ 3.325088] Console: switching to colour frame buffer device 200x56 [ 3.344968] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device [ 6.888889] SELinux: Permission map in class unix_dgram_socket not defined in policy. [ 15.149485] RAPL PMU: hw unit of domain dram 2^-14 Joules [ 15.803664] intel_rapl: Found RAPL domain dram [root@h2g2w sysctl.d]#

[root@h2g2w sysctl.d]# cat /proc/meminfo | grep -i memtotal MemTotal: 16307968 kB [root@h2g2w sysctl.d]#

I just can't understand what is happening, here...however memtest passes the 32Gb. other OSes just reacts similarly (debian/openBSD)

Help would be really appreciated. Before choosing to buy another machine with better setup .... I can avoid that.....

Thanks Regards Goblin Rieur