Ubuntu – Ubuntu 12.04 does not shutdown

12.04shutdown

I am using Ubuntu 12.04 amd64 desktop.

It worked fine, but after the last update, the system does not shutdown.

It gets stuck with the last line on the screen being:

unmounted /kernel/debug

I have to use Ctrl+Alt+Del. It restarts the machine. Then at the grub screen, I choose to hard shutdown the machine.

Can anybody help me with this?

Best Answer

Well after some searching I came to know that , your problem belongs to Kernel.All you need to is simply update your Kernel, Source .

So you have to update your Kernel to 3.9, and Instructions are

Open your terminal and then paste this command to make sure that your system is up to date.

sudo apt-get update && sudo apt-get dist-upgrade && sudo apt-get autoremove

Then

after doing update , restart your system to apply the changes and then change to tmp directory.

cd /tmp

Then for 32-bit Ubuntu Kernel is 

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9-rc8-raring/linux-headers-3.9.0-030900rc8-generic_3.9.0-030900rc8.201304211835_i386.deb http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9-rc8-raring/linux-headers-3.9.0-030900rc8_3.9.0-030900rc8.201304211835_all.deb http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9-rc8-raring/linux-image-3.9.0-030900rc8-generic_3.9.0-030900rc8.201304211835_i386.deb

for 64-bit 

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9-rc8-raring/linux-headers-3.9.0-030900rc8-generic_3.9.0-030900rc8.201304211835_amd64.deb http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9-rc8-raring/linux-headers-3.9.0-030900rc8_3.9.0-030900rc8.201304211835_all.deb http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9-rc8-raring/linux-image-3.9.0-030900rc8-generic_3.9.0-030900rc8.201304211835_amd64.deb

Then install it with

sudo dpkg -i *.deb

Then update your GRUB

sudo update-grub2

Now restart your system to apply the changes.

Source

Hope that helps.

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