On 3/8/22 08:38, Ranjan Maitra wrote:
On Wed Mar02'22 05:46:28PM, Chris Murphy wrote:
From: Chris Murphy <lists@xxxxxxxxxxxxxxxxx>
Date: Wed, 2 Mar 2022 17:46:28 -0700
To: Community support for Fedora users <users@xxxxxxxxxxxxxxxxxxxxxxx>
Reply-To: Community support for Fedora users <users@xxxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: enabling hibernate on a new F35 installation
On Wed, Mar 2, 2022 at 4:02 PM Samuel Sieb <samuel@xxxxxxxx> wrote:
On 3/2/22 13:56, Ranjan Maitra wrote:
My approach to enabling hibernate on Fedora since F20 has been to create a swap partition and then do the following:
sudo vi /etc/default/grub
add --> resume=UUID="****" <-- to the line GRUB_CMDLINE_LINUX=
where the uuid is obtained using blkid, and then for efi-based systems do:
sudo bash -x grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg
and then use:
systemctl hibernate
However, this approach no longer works for me. It goes down all right, but comes back into a newly booted system.
Reading up, it appears that things changed in F34, but I have been caught napping since I have been upgrading from previous versions for a while (I guess this was sort of grandfathered in).
I tried a few things, but what do I do to get hibernate going on a new (clean) F35 installation.
I just tried this out in a VM. I did an install of F35 with a swap
partition and it setup everything for hibernating including the kernel
command line parameter. "systemctl hibernate" does the full hibernating
process, but resuming doesn't work. This seems like a rather
unfortunate bug. Why set everything up so that you can hibernate, but
not resume?
The fix is to run "dracut -a resume -f". This will update the initramfs
to include the bits that let resume work. In order for this to continue
working with kernel updates, you need to add a dracut config file with
the module.
Sounds like a dracut bug to me. It should see the resume parameter on
the kernel command line and just add the resume dracut module to the
initramfs without having to request it explicitly.
How do I do this for my case?
Unless you haven't upgraded the kernel since setting that parameter, it
isn't working. You can try running "dracut -f" to regenerate the
initramfs and see if resume works. Otherwise, you've already filed the bug.
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