Reviewing the patch from bug 554009, I have the following comments:
- as the patch sets SWAPTYPE, no need to set it in line 24 of the
original script immediately before the patch: just run wait-for-root (if
that is actually needed);
- the test for $resume_offset would be safer if it looked for a number, eg:
[ "${resume_offset}" -ge 0] 2>/dev/null
- lines 63-67 of the original script can be replaced by line 64 only: no
need for a separate resume_offset case.
I confirm that the patch enables hibernation and hybrid-sleep to a
/swapfile using uswsusp with LXLE 16.04 identifying as "4.4.0-96-generic
#119-Ubuntu SMP Tue Sep 12 14:58:51 UTC 2017 i686 i686 i686 GNU/Linux",
and also with the above changes.
Why is no-one picking this up? Still 3.5 years of support for Ubuntu
16.04 LTS.
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https://bugs.launchpad.net/bugs/1644975
Title:
Resume from disk (swapfile) fails
Status in initramfs-tools package in Ubuntu:
Confirmed
Bug description:
Well, hibernation with swap file doesn't work while hibernation with
swap partition works perfectly fine with the exactly same
configuration and hardware.
The reason is that when resuming from swap file, initramfs script
can't correctly detect the machine are hibernated from the last shut
down.
And I investigated the issue and found this patch solved
https://bugs.launchpad.net/ubuntu/+source/initramfs-
tools/+bug/554009/+attachment/1366060/+files/resume.patch) for the
hibernate to work.
And it isn't applied to the package. I'd like to help this is really
applied to the official package.
In short, my setup is swapfile inside the system filesystem (LUKS +
LVM2 + ext4).
Also, I roughly followed this tutorial to prepare this configurartion
that: https://ubuntuforums.org/showthread.php?t=1042946
I've opening this bug because the original bug report is closed and
getting no response...
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