Question

5

12.04 64bit detects 7.7 GB Of RAM Out Of 8 GB

rated 0 times [ 5] [ 0] / answers: 1 / hits: 4507 / 3 Years ago, thu, august 19, 2021, 11:54:10

I've Dell Inspiron N5110 with 8 GB of RAM, I installed Ubuntu 12.04 64-Bit.

The problem is that all things are working fine but Ubuntu detects only 7.7 GB of RAM, I've checked & noticed that I've 4 GB of Kingston & 4 GB of Samsung RAM.

Now I've installed Windows to check if it is RAM fault or what, Windows 7 is showing 8 GB of RAM.

Dedicated graphics yes
Video card NVIDIA GeForce GT 525M (DirectX11, SM 5.0, PureVideoHD)
Video card memory 1 024 MB

http://ark.intel.com/products/53469

Intel® Core™ i7-2670QM Processor
(6M Cache, up to 3.10 GHz)

Processor Graphics Intel® HD Graphics 3000

Updated

there is no option in bios to set graphic card ram or to set which graphic card to use ... i have checked 7 to 8 time ...

Answers

Only authorized users can answer the question. Please sign in first, or register a free account.

confiorc

Add To Favorites

Follow

Total Points: 42

Total Questions: 121

Total Answers: 123

Location: India

Member since Wed, Aug 26, 2020

4 Years ago

answered 3 Years ago earxcept · Accepted Answer

so the problem is that all things are working fine but Ubuntu detects only 7.7 GB of ram

Your laptop (Dell N5110) uses Intel integrated graphics (HD Graphics 2000), and this uses some amount of your RAM as "Graphics Memory". Compare to a dedicated graphics/video card which has its own onboard RAM. Even if your laptop has a dedicated ATI/NVidia card, the laptop is usually set by default to automatically "switch" between the two (Nvidia calls this Optimus), and that means that the integrated Intel graphics will reserve memory even if you aren't using them.

Windows includes the reserved video RAM in its count, while Ubuntu doesn't. You can't use this reserved RAM in either OS, in any case.

Your BIOS should let you set a specific value for the amount to be reserved, instead of automatic -- I recommend you pick at least 128MB. Then Ubuntu will show the remainder (8064 MB) as available and usable. Alternately, if you wish to only use the discrete (Nvidia/ATI) card, you can also select that as an option in the BIOS, disabling Intel graphics completely, which should give you access to all of your RAM (warning: this may decrease battery life).