[Bug 1767299] Re: Ubuntu 18.04 Installer creates swap partition too small

[Dave Long]

I also agree that this 1 GB default is terrible. I have 16 GB RAM
(maximum allowed on this laptop) and on Ubuntu 16.04 I had 8 GB swap and
never noticed any performance issues. Now I reinstalled Ubuntu 18.04
from scratch and ended up with this 1 GB default, once I have a few
Docker containers running, an IDE, and lots of tabs open in Chrome or
Firefox, then I start getting slowdowns, sometimes to the point that the
machine grinds to a halt and the only solution is to power off and
restart.

I have added a swap file as per https://askubuntu.com/questions/1031275
/increase-swap-in-ubuntu-18-04-under-lvm-and-encrypted-file-system in
the hope this will let me work as I did on Ubuntu 16.04, but this still
could be improved for the out of the box experience.

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https://bugs.launchpad.net/bugs/1767299

Title:
  Ubuntu 18.04 Installer creates swap partition too small

Status in partman-auto package in Ubuntu:
  Opinion

Bug description:
  Installed Ubuntu 18.04 final release.

  The disk is 512 Gigabyte, the RAM is 8 Gigabyte. The installer just
  gave me 979 Megabyte of space. I chose LVM to have an encrypted drive.

  Here are some details:

  free -h
                total        used        free      shared  buff/cache   available
  Mem:           7,7G        4,0G        152M        399M        3,6G        3,0G
  Swap:          979M          0B        979M


  swapon --show
  NAME      TYPE      SIZE USED PRIO
  /dev/dm-2 partition 980M   0B   -2

  
  cat /etc/fstab
  # /etc/fstab: static file system information.
  #
  # Use 'blkid' to print the universally unique identifier for a
  # device; this may be used with UUID= as a more robust way to name devices
  # that works even if disks are added and removed. See fstab(5).
  #
  # <file system> <mount point>   <type>  <options>       <dump>  <pass>
  /dev/mapper/ubuntu--vg-root /               ext4    errors=remount-ro 0       1
  # /boot was on /dev/sda2 during installation
  UUID=removed-id /boot           ext4    defaults        0       2
  # /boot/efi was on /dev/sda1 during installation
  UUID=removed-id  /boot/efi       vfat    umask=0077      0       1
  /dev/mapper/ubuntu--vg-swap_1 none            swap    sw              0       0

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