I recently moved
/boot to a different partition (first partition on my disk,
sda1), no problems booting or anything.
But now I noticed
gnome-system-monitor only shows one CPU bar. It used to show two (CPU1 and CPU2).
When I run
$ cat /proc/cpuinfo | grep processor | wc -l it returns
1. When I run
$ uname -r it returns
3.2.0-38-generic. It didn't do this before I moved
A little bit of Googling says I need to install generic-pae kernels to be able to use both cores. But when I do
$ sudo apt-get install linux-generic-pae linux-headers-generic-pae I get a dependency error:
The following packages have unmet dependencies: linux-headers-generic-pae:i386 : Depends: linux-headers-3.2.0-38-generic-pae:i386 but it is not going to be installed E: Unable to correct problems, you have held broken packages.
What is going on? What can I do to fix this? Is that info accurate? Is my laptop actually only running on only 1 core?
Edit1: My system is a Lenovo x131e-3372-2vu, AMD E2-1800 APU.
Edit2: Looking at
syslog right after boot,
dmesg logs that my second core, CPU1, is unresponsive when it tries to bring it online:
CPU1: Not responding. It's worth noting that both cores work fine on Windows 8.
Edit3: Okay, so I don't think the issue is with having a
generic-pae kernel or not, since
generic-pae is only needed to activate more than one core if you have a
32-bit installation. Mine is definitely