libsdl2 wants to downgrade xorg to 14.04 original

[philsegeler]

Background:

i installed vivid HWE stack manually 4 months ago
https://wiki.ubuntu.com/Kernel/LTSEnablementStack
but with "-vivid" instead of "-wily"

Please let me know if you need any more information.

1) lsb_release -rd

Description: Ubuntu 14.04.4 LTS
Release: 14.04

2) apt-cache policy libsdl2-2.0-0:i386

libsdl2-2.0-0:i386:
  Installed: (none)
  Candidate: 2.0.2+dfsg1-3ubuntu1.1
  Version table:
     2.0.2+dfsg1-3ubuntu1.1 0
        500 http://gr.archive.ubuntu.com/ubuntu/ trusty-updates/universe i386 Packages
        100 /var/lib/dpkg/status
     2.0.2+dfsg1-3ubuntu1 0
        500 http://gr.archive.ubuntu.com/ubuntu/ trusty/universe i386 Packages

3) i expected to be able to install the 32-bit version of SDL2 to run pcsx2 without downgrading my xserver

4)
sudo apt-get install libsdl2-2.0-0:i386

Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  libglew1.10:i386 libusb-0.1-4:i386 linux-headers-3.19.0-25
  linux-headers-3.19.0-25-generic linux-image-3.19.0-25-generic
  linux-image-extra-3.19.0-25-generic linux-lts-vivid-tools-3.19.0-31
  linux-signed-image-generic linux-tools-3.19.0-31-generic nvidia-cuda-gdb
  opencl-headers
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
  libegl1-mesa libegl1-mesa:i386 libegl1-mesa-drivers libgbm1:i386
  libgl1-mesa-dri libgl1-mesa-dri:i386 libgl1-mesa-glx libgl1-mesa-glx:i386
  libglapi-mesa libglapi-mesa:i386 libgles2-mesa libopenvg1-mesa
  libwayland-egl1-mesa libwayland-egl1-mesa:i386 xserver-xorg
  xserver-xorg-core xserver-xorg-input-evdev
Suggested packages:
  libglide3 libglide3:i386 xfonts-100dpi xfonts-75dpi
The following packages will be REMOVED:
  libegl1-mesa-lts-vivid libegl1-mesa-lts-vivid:i386 libgbm1-lts-vivid
  libgbm1-lts-vivid:i386 libgl1-mesa-dri-lts-vivid
  libgl1-mesa-dri-lts-vivid:i386 libgl1-mesa-glx-lts-vivid
  libgl1-mesa-glx-lts-vivid:i386 libglapi-mesa-lts-vivid
  libglapi-mesa-lts-vivid:i386 libgles1-mesa-lts-vivid libgles2-mesa-lts-vivid
  libwayland-egl1-mesa-lts-vivid libxatracker2-lts-vivid
  xserver-xorg-core-lts-vivid xserver-xorg-input-all-lts-vivid
  xserver-xorg-input-evdev-lts-vivid xserver-xorg-input-mouse-lts-vivid
  xserver-xorg-input-synaptics-lts-vivid xserver-xorg-input-vmmouse-lts-vivid
  xserver-xorg-input-wacom-lts-vivid xserver-xorg-lts-vivid
  xserver-xorg-video-all-lts-vivid xserver-xorg-video-ati-lts-vivid
  xserver-xorg-video-cirrus-lts-vivid xserver-xorg-video-fbdev-lts-vivid
  xserver-xorg-video-intel-lts-vivid xserver-xorg-video-mach64-lts-vivid
  xserver-xorg-video-mga-lts-vivid xserver-xorg-video-neomagic-lts-vivid
  xserver-xorg-video-nouveau-lts-vivid xserver-xorg-video-openchrome-lts-vivid
  xserver-xorg-video-r128-lts-vivid xserver-xorg-video-radeon-lts-vivid
  xserver-xorg-video-savage-lts-vivid
  xserver-xorg-video-siliconmotion-lts-vivid
  xserver-xorg-video-sisusb-lts-vivid xserver-xorg-video-tdfx-lts-vivid
  xserver-xorg-video-trident-lts-vivid xserver-xorg-video-vesa-lts-vivid
  xserver-xorg-video-vmware-lts-vivid
The following NEW packages will be installed:
  libegl1-mesa libegl1-mesa:i386 libegl1-mesa-drivers libgbm1:i386
  libgl1-mesa-dri libgl1-mesa-dri:i386 libgl1-mesa-glx libgl1-mesa-glx:i386
  libglapi-mesa libglapi-mesa:i386 libgles2-mesa libopenvg1-mesa
  libsdl2-2.0-0:i386 libwayland-egl1-mesa libwayland-egl1-mesa:i386
  xserver-xorg xserver-xorg-core xserver-xorg-input-evdev
0 upgraded, 18 newly installed, 41 to remove and 11 not upgraded.
Need to get 13,7 MB of archives.
After this operation, 35,5 MB of additional disk space will be used.
Do you want to continue? [Y/n] n
Abort.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: libsdl2-2.0-0:i386 (not installed)
ProcVersionSignature: Ubuntu 3.19.0-49.55~14.04.1-generic 3.19.8-ckt12
Uname: Linux 3.19.0-49-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Feb 20 11:23:02 2016
InstallationDate: Installed on 2014-11-12 (465 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
SourcePackage: libsdl2
UpgradeStatus: No upgrade log present (probably fresh install)