On Sun, Jun 12, 2016 at 10:46 AM, Ned Slider ned@unixmail.co.uk wrote:
On 12/06/16 16:45, Globe Trotter wrote:
Hi, I am a new CentOS user (quite familiar with Fedora 1-23+) and I decided to try a new install of CentOS on a ASUS R503U.
However, I can not get hibernate to work. I try: systemctl hibenaate and I get: Failed to execute operation: sleep verb not supported Btw, the problem does not go away with super-user.
I was wondering how to get around this issue. I would like the abililty to hibernate and come back in the last state. Thanks!
cat /sys/power/state cat /sys/power/disk
The first should include 'disk' and the second should say enabled or some such. Note that hibernation is probably not supported by the CentOS kernel if this is on a UEFI computer with Secure Boot enabled (it's not supported by Fedora kernels) as it's a possible vector to defeat the point of Secure Boot.
systemd does check to see if there's enough unused swap to fit Active(anon) mem into for hibernation, and if not then hibernation won't be possible.
And yet another thing is that it's possible the initramfs isn't using resume=<hibernationimagedevice> which is currently a problem on Fedora. So you might need to add this to the grub.cfg on the kernel command line, something like resume=/dev/VG/swap or wherever it is. If it's a /dev/sdXY, i.e. on a regular partition, then use UUID.