Replacing default hibernate method to s2disk

Solution 1:

Thanks !! A lot, that worked perfect. I was able to get s2disk to hibernate my Toshiba C640, but not restore it. By updating /etc/pm/config.d/00sleep_module and purging cryptsetup as per post on Ask Ubuntu , things started working well.

Although waking from hibernate Grub 2 looks like something is wrong as it is stuck on background for few seconds. Maybe its just grub or large 4 GB ram snapshot being loaded from disk. I will have to check.

Also, my LAN connection came back. I had serious doubts about it, since I had to custom compile Atheros Fast Ethernet card module into Kernel.

I am using kernel 3.2.0-27-generic with Ubuntu 12.04 LTs on Toshiba Satellite C640 Hardware. Steps I have followed

sudo nano /etc/pm/config.d/00sleep_module

If you never touched this file OOTB it should be entirely commented. Please read it entirely. Add following line to end of file

SLEEP_MODULE="uswsusp"

Finally purge cryptsetup, I am not sure about this step, it may or may not help

sudo apt-get purge cryptsetup

Solution 2:

You can create a file called module in /etc/pm/config.d/module if not already there and add

SLEEP_MODULE=uswsusp

inorder to work with pm-utils

I think you should also go through the configuration part given in the link below.

Source

Solution 3:

After reinstalling 11.10 from scratch, s2disk is the default option.