Ubuntu 11.04 will not recognize ram

[musahossein]

Hi I installed Ubuntu on a Toshiba Satellite M35X. It has 4 Gigs of ram. But Ubuntu only reconizes 2 Gigs. I had Suse Linux installed before and it recognized 4 Gs,so why not Ubuntu? Any help would be greatly appreciated, thanks!

[zvacet]

System>administration>synaptic and in search box type linux-image and then find linux-image pae and install it.

[musahossein]

System>administration>synaptic and in search box type linux-image and then find linux-image pae and install it.
did it. The restarted the computer, checked system. Still shows 1.9G. Synaptic-package manager shows all -image as being installed. Help!

[pkg9991]

is your RAM functioning properly check with other OS

[Blasphemist]

zvacet didn't fully explain. The PAE kernel is the 32 bit kernel that allows for having 4GB or more memory. This page tells you how to install it and why it may not be. You can see that kernel detail on the grub screen to verify that this is the issue. https://help.ubuntu.com/community/EnablingPAE

I think you'll also need to do this command to update grub to show the new kernel.

sudo update-grub

[musahossein]

zvacet didn't fully explain. The PAE kernel is the 32 bit kernel that allows for having 4GB or more memory. This page tells you how to install it and why it may not be. You can see that kernel detail on the grub screen to verify that this is the issue. https://help.ubuntu.com/community/EnablingPAE

I think you'll also need to do this command to update grub to show the new kernel.

sudo update-grub

Did the -grub part. But a search of the Synaptic Pkg manager does not list any pae, or
linux-image-generic-pae

[musahossein]

is your RAM functioning properly check with other OS
I only have ubuntu 11.04 loaded on this machine. Before it was suse and it detected 4G fine.

[dFlyer]

Hi I installed Ubuntu on a Toshiba Satellite M35X. It has 4 Gigs of ram. But Ubuntu only reconizes 2 Gigs. I had Suse Linux installed before and it recognized 4 Gs,so why not Ubuntu? Any help would be greatly appreciated, thanks!

Check your memory and if good, install the pae kernel.

[MAFoElffen]

Check your memory and if good, install the pae kernel.
EnablingPAE (https://help.ubuntu.com/community/EnablingPAE?action=fullsearch&context=180&value=linkto%3A%22EnablingPAE%22)

[kaniko]

Hello, I've installed Ubuntu 11.04 64 bits

$ uname -a


Linux MyComputer 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

$ free -m

total used free shared buffers cached
Mem: 3646 3574 72 0 107 1732
-/+ buffers/cache: 1733 1913
Swap: 1950 0 1950


$ sudo lshw -C memory


*-memory
description: System Memory
physical id: 1000
slot: System board or motherboard
size: 8GiB


I don't know what is the problem, Could anybody help me. I searched a lot, but with the Ubuntu 64 bits it shouldn't be a problem.

Thanks in advance