As for the fix in https://bugs.launchpad.net/ubuntu/+source/ecryptfs-utils/+bug/1310058/comments/22
adding noauto anywhere and doing step 3 was not necessary.
I did install using LVM, not encrypting the whole disk, but encrypting home (and consequently encrypting swap), so I used /dev/mapper/mythbuntu--vg-swap_1 instead of /dev/sdaX in step 2. (It is shown in the output of "sudo fdisk -l".)
As for the fix in /bugs.launchpad .net/ubuntu/ +source/ ecryptfs- utils/+ bug/1310058/ comments/ 22 mythbuntu- -vg-swap_ 1 instead of /dev/sdaX in step 2. (It is shown in the output of "sudo fdisk -l".)
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adding noauto anywhere and doing step 3 was not necessary.
I did install using LVM, not encrypting the whole disk, but encrypting home (and consequently encrypting swap), so I used /dev/mapper/