Hi there!
So I installed another 4 GiB RAM into a Gentoo amd64 system that had 4 GiB
already. But it still sees only 4 GiB, not 8 GiB:
leela ~ # uname -a
Linux leela 3.6.11-gentoo #3 SMP Mon Feb 4 15:37:48 CET 2013 x86_64 AMD
A6-3500 APU with Radeon(tm) HD Graphics AuthenticAMD GNU/Linux
leela ~ #
free -m total used free shared buffers cached
Mem: 3688 3269 419 0 108 1050
-/+ buffers/cache: 2110 1577
Swap: 2047 54 1993
Huh? Any idea why this is? The BIOS shows the full 8GiB, and lshw finds
it. dmidecode shows that 8G should work:
leela ~ # dmidecode -t 16
# dmidecode 2.11
SMBIOS 2.7 present.
Handle 0x0008, DMI type 16, 23 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 8 GB
Error Information Handle: Not Provided
Number Of Devices: 2
In case this helps, I uploaded the outputs of dmesg [1], lshw -c memory
[2] and full dmidecode output [3]. The dmesg output is somewhat weird
though, it has several 'vmalloc: allocation failure: 0 bytes' entries. I
suspected those were causing the problem, but I found that I needed to
activate CONFIG_KALLSYMS=y, and they are gone. But still only 4 GiB RAM.
The system is using an old kernel right now, so I cannot get the current
dmesg, sorry for this.
Probably related: Since I inserted this 2nd RAM module, wakeup
from hibernate-ram does no longer work.
Does this ring any bells? I'm out of ideas. Except than pulling out the 4
GB, or trying another mainboard.
[1] http://www.wonkology.org/tmp/lshw.txt
[2] http://www.wonkology.org/tmp/dmesg.txt
[3] http://www.wonkology.org/tmp/dmidecode.txt
Wonko
