Same thing happens:
$ uname -a
Linux home-desktop 2.6.38-02063802-generic #201103281246 SMP Mon Mar 28
12:50:24 UTC 2011 x86_64 GNU/Linux
$ sudo dmidecode -t memory
# dmidecode 2.9
SMBIOS 2.5 present.
Handle 0x000A, DMI type 16, 15 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 4 GB
Error Information Handle: Not Provided
Number Of Devices: 2
Handle 0x000C, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x000A
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 1024 MB
Form Factor: DIMM
Set: None
Locator: DIMM0
Bank Locator: BANK0
Type: SDRAM
Type Detail: Synchronous
Speed: Unknown
Manufacturer: Manufacturer0
Serial Number: SerNum0
Asset Tag: AssetTagNum0
Part Number: PartNum0
Handle 0x000E, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x000A
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 2048 MB
Form Factor: DIMM
Set: None
Locator: DIMM1
Bank Locator: BANK1
Type: SDRAM
Type Detail: Synchronous
Speed: Unknown
Manufacturer: Manufacturer1
Serial Number: SerNum1
Asset Tag: AssetTagNum1
Part Number: PartNum1
Following a hunch from comments on similar bugs
(http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=486651), it might be a bios
bug. According to my motherboard vendor (MSI) there is a new bios update, v3.8:
- Update CPU Micro Code.
- Update Marvell ROM version.
- Fixed system report incorrect memory size with 4G memory.
** Bug watch added: Debian Bug tracker #486651
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=486651
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https://bugs.launchpad.net/bugs/721493
Title:
dmidecode shows wrong memory information
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