On 27/09/09 14:57, Aioanei Rares wrote:
>
j.andradas@gmail.com wrote:
>> Hello,
>>
>> last week, when booting a virtual machine, I discovered that my laptop
>> only recognizes one of the RAM modules (supposed to be 1 GB, but truly
>> providing 880 MB). I realized this when VirtualBox complained that I
>> had configured more than the available RAM to the virtual machine. I
>> had not changed the virtual machine configuration, and the virtual
>> machine had about 950 MB assigned (and my physical host, only had 880
>> MB).
>>
>> Since I previously had 2 GB of RAM, I assumed one of the chips was
>> broken somehow. I replaced one of them, and I still got this output
>> for the "free" command:
>>
>> $ free
>> total used free shared buffers
>> cached
>> Mem: 902264 892608 9656 0 23624 621432
>>
>>
>> So I put the original module back on, and changed the other one. I
>> entered the BIOS, and it detected 2048 MB of RAM. I run a test on
>> the memory (from the BIOS), and everything seemed allright. But my
>> Debian keeps seeing only 902264 of RAM.
>>
>> I downloaded a new Kernel, re-compiled, but everything is still the
>> same. I am running Debian Sid, if that could matter, but I can't see
>> how that would affect the amount of RAM available.
>>
>> Running lshw, I get the following ouput:
>>
>> *-memory
>> description: System Memory
>> physical id: a
>> slot: System board or motherboard
>> size: 2GiB
>> *-bank:0
>> description: SODIMM DDR2 Synchronous 533 MHz (1.9 ns)
>> product: 9905293-014.A00LF
>> vendor: 7F98000000000000
>> physical id: 0
>> serial: 41CC9DE7
>> slot: DIMM #1
>> size: 1GiB
>> width: 64 bits
>> clock: 533MHz (1.9ns)
>> *-bank:1
>> description: SODIMM DDR2 Synchronous 667 MHz (1.5 ns)
>> product: 9905295-066.A00LF
>> vendor: 7F98000000000000
>> physical id: 1
>> serial: 66078142
>> slot: DIMM #2
>> size: 1GiB
>> width: 64 bits
>> clock: 667MHz (1.5ns)
>>
>>
>> Could the difference between the clocks available on the RAM chips
>> only allow for one of them to be used?
>> Thank you in advance,
>>
>> Best Regards,
>>
>> --
>> Jonás Andradas
>>
>> Skype: jontux
>> LinkedIn:
http://www.linkedin.com/in/andradas
>> GPG Fingerprint: 678F 7BD0 83C3 28CE 9E8F
>> 3F7F 4D87 9996 E0C6 9372
>> Keyservers:
pgp.mit.edu |
pgp.rediris.es
>>
> Please post the output of your dmesg.
>
>