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-   -   Hibernation file / resuming "difficulties" (https://www.linuxquestions.org/questions/linux-general-1/hibernation-file-resuming-difficulties-4175480836/)

yogo1212 10-15-2013 05:24 AM
Hibernation file / resuming "difficulties"
 
Hello you lovely people,

I'm on debian with linux 3.11.4 and want to try the hibernation feature on my laptop.

I've had problems with supending - the power led didn't come on after resuming - but those are out of the way.

My biggest problem is, that concurrent hibernations don't work. After resuming any way of hibernating again - echoing disk, pm-hibernate or via Kickoff - will lock the screen and do nothing else, no log entries in pm-logs in /var/log and when shutting down i see the pm-hibernate process hanging there until terminated.

Also, resuming wont work if the resume paramter is specified as UUID.
That means passing resume=UUID=3dda5c70-e1b4-4084-bbf6-f190687d7060 or resume=/dev/disk/by-uuid/3dda5c70-e1b4-4084-bbf6-f190687d7060 wont resume whereas resume=/dev/sda5 does

This is from blkid:
Code:
/dev/sda5: UUID="3dda5c70-e1b4-4084-bbf6-f190687d7060" TYPE="ext4

Code:
set root='(hd0,msdos7)'
search --no-floppy --fs-uuid --set=root 99a50daf-5d8e-4b83-ba83-d5e02060e456
echo    'Loading Linux 3.11.4 ...'
linux  /vmlinuz-3.11.4 root=/dev/sda6 ro acpi_osi=Linux iommu=noaperture rootflags=data=journal resume=UUID=3dda5c70-e1b4-4084-bbf6-f190687d7060 resume_offset=17397760 quiet
This is output by update-grub and for some reason the root-parameter is a device instead of a UUID.

On the side:
Could my kernel have problems with UUID's?

Edit:
init/do_mounts.c states that UUID's should be passed as PARTUUID. I've tried that also.

Taken from /var/log/kern.log :
Code:
Oct 15 12:43:44 rivendell kernel: [    2.050450] PM: Checking hibernation image partition PARTUUID=3dda5c70-e1b4-4084-bbf6-f190687d7060
...
Oct 15 12:43:44 rivendell kernel: [    3.171408] PM: Hibernation image not present or could not be loaded.
kind regards, yogo1212

sundialsvcs 10-15-2013 09:29 AM
It sounds like the video-driver that you've chosen to use is not the best one for this machine. In general, the hibernate/resume process involves five steps:
  1. Put the devices to sleep.
  2. Save state.
  3. Halt. Restart.
  4. Wake up the devices.
  5. Restore state.
It sounds to me like the video put-to-sleep code is hanging.


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