[xubuntu-users] Swap not active

[Rog]

I tried Puny Geek's method (ref: below), creating the missing resume file 
after mkswap. While the process seemed go to a successful completion, /swap 
was gone after reboot. Not to mention, the partition with /swap on it could no 
longer be "activated." I had to delete and recreate the /swap partition. At 
this point, as discussed previously, I'm ready to opt-out of an encrypted 
/swap but how do I get rid of the traces of encrypted swap and the associated 
error message at boot?

(Oh, I know: this is a top post but you can always scroll down!)

On 05/19/2015 04:23 PM, Rog wrote:
> On 05/19/2015 04:01 AM, Marcos Almeida Azevedo wrote:
>>
>>
>> On Wed, May 6, 2015 at 9:25 AM, Rog <linux.rog at gmail.com 
>> <mailto:linux.rog at gmail.com>> wrote:
>>
>>     On 05/05/2015 09:18 PM, Marcos Almeida Azevedo wrote:
>>>
>>>
>>>     On Wed, May 6, 2015 at 6:39 AM, Rog <linux.rog at gmail.com
>>>     <mailto:linux.rog at gmail.com>> wrote:
>>>
>>>         When I boot, I see, "The device mapper for /dev/mapper/cryptswap1
>>>         is not ready or not present. Continue to wait, or Press S to skip
>>>         mounting or M for manual recovery.
>>>
>>>         Waiting has no apparent effect; M does nothing.
>>>
>>>         Gnome-system-monitor shows swap as not available. Gnome-disk
>>>         utility shows the partition as inactive and when I Activate it,
>>>         the swap status changes immediately to available.
>>>
>>>         After a reboot, I get the same message at boot, swap is not
>>>         available and is not active, according to Gnome-disk.
>>>
>>>         I'm running Xubuntu 14.04 and updates are current. But, I've seen
>>>         the same message at boot on another PC running Xubuntu 12.04.
>>>
>>>         Luckily, Linux manages memory memory quite well so swap is seldom
>>>         called into action, and, I don't hibernate - just suspend or shutdown.
>>>
>>>         Solution?
>>>
>>>
>>>     You may try this guide:
>>>     http://punygeek.blogspot.com/2012/10/ubuntu-1204-how-to-solve-disk-drive-for.html
>>>     It's for 12.04 but it might still work
>>     Thanks, Marcos: I'll give that a try in a couple of days . . . I'll be
>>     tied-up until Thursday p.m.
>>
>>
>> Did it work?
> Marcos: did not work. I tried it last night. I did a little more research 
> and found this is very likely related to a bug, 
> https://bugs.launchpad.net/ubuntu/+source/cryptsetup/+bug/1153661
>
> In short, it appears to have been around since ver. 12.04 with various 
> attempts to cope with little success.
>
> In the short-term, it appears to me that the best solution is to dump 
> encryption of /swap and go with a non-encrypted swap. BUT, I don't know how 
> to do that!
>
> More comments:
>
> The encryption of /swap appears to be a byproduct of opting to encrypt /home 
> during install of Xubuntu. This happened without my explicit invoking this 
> option during install on two different systems.
>
> As noted by others, the UUID for encrypted swap is not correctly identified 
> in /etc/crypttab as well as in /etc/fstab.
>
> Some suggest that the error is related to having installed from a thumb 
> drive, which is what I did.
>
> Puny Geek suggests updating /etc/initramfs-tools/conf.d/resume. That file 
> does NOT exist on my 14.04 install.
>
> As others have noticed, some fixes work for a current session but don't 
> survive a re-boot. I had this experience by "activating" the /swap partition 
> with the Disk Utility, previously known as "palimpsest" under 12.04.
>
> I concluded that, since this bug has been long-standing and others have not 
> been successful in fixing it or having a lasting work-around, I'm not likely 
> to be successful either. Hence the conclusion of living without it being 
> encrypted is a nice work around. I encrypt /home on my portable devices to 
> protect personal info if it is stolen. My guess is that it's unlikely for 
> unencrypted info to be compromised because it's unlikely to sit in /swap and 
> be read by a nefarious operator.
>
> Thanks to all who thought about this.
>
> Other, related links:
> http://askubuntu.com/questions/505880/message-disk-drive-for-dev-mapper-cryptswap1-is-not-ready-yet-or-not-present-ev
>
> Oh: here's one I did not try: treating this as a timing error (also 
> discussed elsewhere)
> http://ubuntuforums.org/showthread.php?t=2164313
>
> Other thoughts:
> Try creating /etc/initramfs-tools/conf.d/resume with the correct UUID and go 
> through Puny Geek's approach.
> Hope for a solution in response to bug report.
>
> p.s. All of this fiddling around is what I anticipated when attempting a 
> solution and why I put it off!
>
> /Roger

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