uname -a output indicates this system is running the stock 32-bit kernel (non-PAE). This is why the system has access to only (and exactly) 3.0 GB of RAM.
There are two ways for the system to see (and fully take advantage of ) your 4 GB of RAM: 1- Install linux-generic-pae 2- Reinstall the system using the 64-bit version of Ubuntu. Still, the checkbox test seems to be doing the right thing by reporting the amount of memory available to the system (3GB). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/886494 Title: RAM does not read good To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/checkbox/+bug/886494/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs