Sudhir,

What exactly did you try? Here are my notes (that work for me on all but one 
laptops):

## To get hibernate going (since F20):

sudo vi /etc/defaults/grub

## add --> resume=UUID="****" <-- to the line GRUB_CMDLINE_LINUX= (anywhere, i 
do it before the rhgb which I also take out since I like to see what is 
happening

## where the uuid is obtained using 

sudo blkid.

## then

sudo bash -x grub2-mkconfig
sudo bash -x grub2-mkconfig -o /boot/grub2/grub.cfg

Reboot and things work for me on about half a dozen machines, all Dells of 
varied vintage (including one XPS13) and one Thinkpad T510. 

I am not aware of the resume_offset flag: where did you get this?

Ranjan

PS: The one laptop where it did not work is a Dell Precision M3800 where it is 
not reliable. There was a long-standing bug in kernel which was fixed in 4.8 
but with this machine, hibernate reliably worked on 4.8.4 but the unreliability 
(not always coming back, especially if a number of windows were left open) 
returned post-4.8.5,

Many thanks again$
Ranjan


On Mon, 02 Jan 2017 15:33:38 +0530 Sudhir Khanger <sud...@sudhirkhanger.com> 
wrote:

> Hi back,
> 
> 
> 
> After a lot of Google search it seems to hibernate using swap file I need 
> both the resume flag and resume_offset flag. After setting these my system 
> seems to go into hibernation but doesn't recover. It just boots into a new 
> session. Also systemctl hybrid-sleep is working as far as I can tell.
> 
> 
> 
> ---- On Mon, 02 Jan 2017 11:52:16 +0530 Sudhir Khanger 
> &lt;sud...@sudhirkhanger.com&gt; wrote ----
> 
> 
> 
> 
> Hi,
> 
> 
> 
> I am setting up a new Dell Precision 5510. It has 16gb of RAM. I chose to 
> create a swapfile of 24gb (1.5 times is recommended by RHEL 7 docs).
> 
> 
> 
> The swap is on, resume flag has been set in /etc/default/grub, and secure 
> boot if off. That's my understanding of the common bug entry.
> 
> 
> 
> When I hibernate my system it simply locks the system. No hibernation is 
> done. I gave Kubuntu a try to see if there is a problem with hibernation and 
> it works fine on Kubuntu.
> 
> 
> 
> If you guys have any ideas I would really appreciate it.
> 
> 
> 
> Regards,
> 
> Sudhir Khanger,
> 
> sudhirkhanger.com.
> 
> 
> 
> 
> 
> _______________________________________________
> 
> users mailing list -- users@lists.fedoraproject.org
> 
> To unsubscribe send an email to users-le...@lists.fedoraproject.org
> 
> 
> 
> 
> 
> Regards,
> 
> Sudhir Khanger,
> 
> sudhirkhanger.com.
> 
> 
> 
> 
> 


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