6GB of Memory showing as 5GB

[DollaBillz618]

Hello. I have Fedora 10 installed on my PC and I recently upgraded from 2GB of Memory to 4GB of memory. I have 2 2GB memory and 2 1GB memory sticks. they are all 4 GSKILL PC 6400 800Mhz memory. When I look on my PC it shows each memory bay is active and it shows the correct amount of memory in each bay, but when I go to about this computer option from the task bar, it only shows up as 5GB of memory. Anyone have any ideas? Actually I think it might show up as 5GB even in my BIOS so it might be a BIOS setting with my ASUS P5BE motherboard.

[DollaBillz618]

Sorry, Upgraded from 2 GB to 6GB. Mis-typed above, sorry

[zackf]

It is showing up as 5 exactly or like 5.5 GB? I had 2GB installed once that only showed as like 1.8.

[nick.stumpos]

well check the bios and get back to us just to make sure, also did you try to play around with there slot location, some motherboards are picky about that ie if you have a 2 gig and a one gig on pairing slots, it may only see the 2 gig as a one gig. also there is an edit button on the forums

[hephasteus]

One of the 1 gb memory sticks is not being detected and used.

Reseat your 1gb memory modules. Check in cmos how much is detected.

If that doesn't work there's other things to try.

[EugeneDudorov]

Hello. I have Fedora 10 installed on my PC and I recently upgraded from 2GB of Memory to 4GB of memory. I have 2 2GB memory and 2 1GB memory sticks. they are all 4 GSKILL PC 6400 800Mhz memory. When I look on my PC it shows each memory bay is active and it shows the correct amount of memory in each bay, but when I go to about this computer option from the task bar, it only shows up as 5GB of memory. Anyone have any ideas? Actually I think it might show up as 5GB even in my BIOS so it might be a BIOS setting with my ASUS P5BE motherboard.


What the architecture of your distributive?
32 bit or 64 bit?

Use 64-bit edition for full support large memory.
or...
In 32-bit edition you can try install PAE-kernel.

Good luck. :)

[DollaBillz618]

Thanks for your replies. I've made sure that they are all properly seated and they are in the correct slot. My slots are color coordinated (yellow, black, yellow, black) and I have them in the proper slots. This is the output from my dmidecode command:

Handle 0x0009, DMI type 6, 12 bytes
Memory Module Information
Socket Designation: DIMM0
Bank Connections: 0 1
Current Speed: 25 ns
Type: DIMM SDRAM
Installed Size: 2048 MB (Double-bank Connection)
Enabled Size: 2048 MB (Double-bank Connection)
Error Status: OK

Handle 0x000A, DMI type 6, 12 bytes
Memory Module Information
Socket Designation: DIMM1
Bank Connections: 2 3
Current Speed: 25 ns
Type: DIMM SDRAM
Installed Size: 1024 MB (Double-bank Connection)
Enabled Size: 1024 MB (Double-bank Connection)
Error Status: OK

Handle 0x000B, DMI type 6, 12 bytes
Memory Module Information
Socket Designation: DIMM2
Bank Connections: 4 5
Current Speed: 25 ns
Type: DIMM SDRAM
Installed Size: 2048 MB (Double-bank Connection)
Enabled Size: 2048 MB (Double-bank Connection)
Error Status: OK

Handle 0x000C, DMI type 6, 12 bytes
Memory Module Information
Socket Designation: DIMM3
Bank Connections: 6 7
Current Speed: 25 ns
Type: DIMM SDRAM
Installed Size: 1024 MB (Double-bank Connection)
Enabled Size: 1024 MB (Double-bank Connection)
Error Status: OK


It shows that it recognizes all of the memory and that there are no errors. But still when I go to System, About this Computer, it shows my system memory as 4.9Gb, not 6. I have 32 bit edition and I did install PAE-kernel and it still isn't recognizing all the memory. Any other ideas? Thanks in advance

[sideways]

The missing 1.1gb is due to the pci memory hole. You can enable memory hole remapping in some bioses.

[DollaBillz618]

Cool, I just went into BIOS and turned on memory remapping and it now shows 5.9GB instead of 4.9Gb like it did before. I appreciate everyones help with getting this one fixed. Thanks again