0

Why can I only access 3gb of RAM with 8 installed on 64 bit system? My BIOS recognizes all 8 gb installed in the system. I thought by installing 64-bit Ubuntu would take advantage of the higher RAM installed.

I am running an Intel Core i3 540 Can I access this 8 gb somehow? Thanks in advance.

--memory
       description: System Memory
       physical id: 30
       slot: System board or motherboard
       size: 8GiB
     *-bank:0
          description: DIMM SDRAM Synchronous
          product: ModulePartNumber00
          vendor: Manufacturer00
          physical id: 0
          serial: SerNum00
          slot: DIMM0
          size: 4GiB
          width: 64 bits
     *-bank:1
          description: DIMM SDRAM Synchronous
          product: ModulePartNumber01
          vendor: Manufacturer01
          physical id: 1
          serial: SerNum01
          slot: DIMM1
          size: 4GiB
          width: 64 bits

On the Ubuntu about page it shows 3.0 Gib instead of the 8 you see above.

Screenshot of system info

Improve this question
17
  • 1
    How do you know only 3gb of ram is being accessed? Did you sudo lshw -C memory (list hardware class memory) and see only some there? Does free and like commands show only part there? If so why not provide your proof & details so we can help? (please edit your questions and add additional info there, don't provide it in comments which have little formatting & editing options)
    – guiverc
    Nov 9, 2018 at 21:47
  • Probably related: en.wikipedia.org/wiki/3_GB_barrier
    – Byte Commander ♦
    Nov 9, 2018 at 21:52
  • Did you recently upgrade your RAM? If so, you went from what to what? Did you check what the maximum RAM is supported in your computer? Report back to @heynnema
    – heynnema
    Nov 9, 2018 at 22:17
  • 1
    Did you check what the maximum RAM is supported in your computer? Some older laptops may have only supported 4G RAM max, even if a 8G stick got installed.
    – heynnema
    Nov 9, 2018 at 22:47
  • 1
    Your RAM sticks may need to be reseated in their sockets. Do that and see if it helps. You may also have a bad RAM, or motherboard... jury is still out. If not, boot to a Ubuntu Live DVD/USB and see what it says about RAM. Report back.
    – heynnema
    Nov 9, 2018 at 22:53

0

Reset to default

You must log in to answer this question.

Browse other questions tagged .