I have to correct myself: Removing the multiarch packages helped, but the default solver still wants to drop half of KDE while the aspcud solver looks good:

root@slpn-nb-mss:~# apt-get install -V --no-remove xserver-xorg-lts-quantal --solver aspcud
Reading package lists... Done
Building dependency tree       
Reading state information... Done
^Cecute external solver... 25%
root@slpn-nb-mss:~# apt-get install -V --no-remove xserver-xorg-lts-quantal ^C
root@slpn-nb-mss:~# 
root@slpn-nb-mss:~# apt-get install -V --no-remove xserver-xorg-lts-quantal 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
   x11-apps (7.6+5ubuntu1)
   libfreehep-graphicsio-svg-java (2.1.1-3)
   libsdl-ttf2.0-0 (2.0.9-1.1ubuntu1)
   libnumber-compare-perl (0.03-1)
   units (1.87-2)
   libfile-spec-perl (3.3300-1build2)
   krita-data (2.6.1-0ubuntu5~ubuntu12.04.2~ppa2)
   libfile-remove-perl (1.51-1)
   libfile-homedir-perl (0.98-1)
   libdevel-refactor-perl (0.05-1)
   liborlite-perl (1.51-1)
   fonts-takao-pgothic (003.02.01-5ubuntu1)
   libfile-next-perl (1.06-2)
   libfile-sharedir-perl (1.00-0.1)
   libfreehep-graphicsio-java (2.1.1-2)
   libfile-pushd-perl (1.001-1)
   libfile-find-rule-perl (0.33-1)
   libplplot11 (5.9.9-2ubuntu2)
   libqtexengine1 (0.3-2)
   libfile-which-perl (1.08-1)
   libclass-unload-perl (0.07-1)
   libfreehep-export-java (2.1.1-2)
   libmodule-manifest-perl (0.07-1)
   libqwt5-qt4 (5.2.2-1ubuntu2)
   qt-assistant-compat (4.6.3-3ubuntu2)
   libgl2ps0 (1.3.6-1)
   ack-grep (1.92-1)
   libsunflow-java (0.07.2.svn396+dfsg-9)
   libthreads-shared-perl (1.40-1build1)
   libfreehep-io-java (2.0.2-4)
   xsettings-kde (0.12.3-0ubuntu2.1)
   libdbd-sqlite3-perl (1.35-1)
   libprobe-perl-perl (0.01-1)
   libtext-findindent-perl (0.10-1)
   libparse-errorstring-perl-perl (0.15-1)
   libkdcraw-data (4.10.2-0ubuntu1~ubuntu12.04~ppa2)
   x11-session-utils (7.6+2)
   libvecmath-java (1.5.2-3)
   libclass-inspector-perl (1.25-1)
   libmath-basecnv-perl (1.8.B59BrZX-1)
   libppix-regexp-perl (0.023-1)
   libtemplate-tiny-perl (1.12-1)
   libpod2-base-perl (0.043-1)
   libmikmod2 (3.1.12-2)
   libpod-abstract-perl (0.20-1)
   libjas-plotter-java (2.2.6+dfsg1-2)
   libclass-adapter-perl (1.07-1)
   libdevel-dumpvar-perl (1.06-1)
   libmuparser0debian1 (1.34-2)
   libfreehep-graphicsio-tests-java (2.1.1+dfsg1-3)
   libtext-diff-perl (1.41-1)
   libtask-weaken-perl (1.03-1)
   libxml-tidy-perl (1.12.B55J2qn-1)
   libcsiro0 (5.9.9-2ubuntu2)
   libtext-glob-perl (0.09-1)
   libtablelayout-java (20090826-2)
   filezilla-common (3.5.3-1ubuntu2)
   libsdl-net1.2 (1.2.7-5)
   libalglib-2.6.0 (2.6.0-3)
   libqsastime0 (5.9.9-2ubuntu2)
   wx-common (2.8.12.1-6ubuntu2.2)
   libwxbase2.8-dev (2.8.12.1-6ubuntu2.2)
   qtiplot-doc (0.9.8.8-3)
   libfreehep-util-java (2.0.2-5)
   libfreehep-graphics2d-java (2.1.1-3)
   libkdcraw22 (4.10.2-0ubuntu1~ubuntu12.04~ppa2)
   libppix-editortools-perl (0.13-1)
   libfreehep-xml-java (2.1.2+dfsg1-3)
   libipc-run3-perl (0.045-1)
   wx2.8-headers (2.8.12.1-6ubuntu2.2)
   liborlite-migrate-perl (1.09-1)
   libclass-xsaccessor-perl (1.13-1)
   libppi-perl (1.215-1)
   libopenjpeg2 (1.3+dfsg-4+squeeze1build0.12.04.1)
   libxp6 (1.0.1-2)
   libpadwalker-perl (1.92-1build2)
   libparse-exuberantctags-perl (1.01-1build2)
   libcg (3.0.0016-0ubuntu1)
   libsdl-sound1.2 (1.0.3-4)
   libfreehep-swing-java (2.0.3-3)
   libdebug-client-perl (0.15-1)
   libpod-pom-perl (0.27-1)
   libtamuanova-0.2 (0.2-1)
   libsmpeg0 (0.4.5+cvs20030824-4)
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
   libgl1-mesa-dri-lts-quantal (9.0.3-0ubuntu0.1~precise1)
   libgl1-mesa-glx-lts-quantal (9.0.3-0ubuntu0.1~precise1)
   libglapi-mesa-lts-quantal (9.0.3-0ubuntu0.1~precise1)
   libllvm3.1 (3.1-2ubuntu1~12.04)
   libtxc-dxtn-s2tc0 (0~git20110809-2.1)
   libxatracker1-lts-quantal (9.0.3-0ubuntu0.1~precise1)
   libxrandr-ltsq2 (1.4.0-1~precise1)
   linux-generic-lts-quantal (3.5.0.28.35)
   x11-xserver-utils-lts-quantal (7.7~3ubuntu1~precise1)
   xserver-common-lts-quantal (1.13.0-0ubuntu6.1~precise2)
   xserver-xorg-core-lts-quantal (1.13.0-0ubuntu6.1~precise2)
   xserver-xorg-input-all-lts-quantal (7.7+1ubuntu4~precise1)
   xserver-xorg-input-evdev-lts-quantal (2.7.3-0ubuntu2~precise1)
   xserver-xorg-input-mouse-lts-quantal (1.7.2-2build1~precise1)
   xserver-xorg-input-synaptics-lts-quantal (1.6.2-1ubuntu5~precise1)
   xserver-xorg-input-vmmouse-lts-quantal (12.9.0-0ubuntu3~precise1)
   xserver-xorg-input-wacom-lts-quantal (0.17.0-0ubuntu2~precise1)
   xserver-xorg-video-all-lts-quantal (7.7+1ubuntu4~precise1)
   xserver-xorg-video-ati-lts-quantal (6.99.99~git20120913.8637f772-0ubuntu1~precise2)
   xserver-xorg-video-cirrus-lts-quantal (1.5.1-0ubuntu2~precise1)
   xserver-xorg-video-fbdev-lts-quantal (0.4.3-0ubuntu1~precise1)
   xserver-xorg-video-intel-lts-quantal (2.20.9-0ubuntu2~precise2)
   xserver-xorg-video-mach64-lts-quantal (6.9.3-0ubuntu1~precise2)
   xserver-xorg-video-mga-lts-quantal (1.6.2-0ubuntu1~precise2)
   xserver-xorg-video-modesetting-lts-quantal (0.5.0-0ubuntu1~precise2)
   xserver-xorg-video-neomagic-lts-quantal (1.2.7-0ubuntu1~precise1)
   xserver-xorg-video-nouveau-lts-quantal (1.0.2-0ubuntu3~precise2)
   xserver-xorg-video-openchrome-lts-quantal (0.3.1-0ubuntu1~precise2)
   xserver-xorg-video-r128-lts-quantal (6.9.1-0ubuntu1~precise2)
   xserver-xorg-video-radeon-lts-quantal (6.99.99~git20120913.8637f772-0ubuntu1~precise2)
   xserver-xorg-video-s3-lts-quantal (0.6.5-0ubuntu1~precise1)
   xserver-xorg-video-savage-lts-quantal (2.3.6-0ubuntu1~precise1)
   xserver-xorg-video-siliconmotion-lts-quantal (1.7.7-0ubuntu1~precise1)
   xserver-xorg-video-sis-lts-quantal (0.10.7-0ubuntu1~precise2)
   xserver-xorg-video-sisusb-lts-quantal (0.9.6-0ubuntu1~precise1)
   xserver-xorg-video-tdfx-lts-quantal (1.4.5-0ubuntu1~precise2)
   xserver-xorg-video-trident-lts-quantal (1.3.6-0ubuntu2~precise1)
   xserver-xorg-video-vesa-lts-quantal (2.3.2-0ubuntu1~precise1)
   xserver-xorg-video-vmware-lts-quantal (12.0.2+git.e5ac80d8-0ubuntu1~precise2)
Suggested packages:
   libglide3 (2002.04.10ds1-7)
   nickle (2.71-1)
   cairo-5c (1.4)
   xfonts-100dpi (1.0.3)
   xfonts-75dpi (1.0.3)
   gpointing-device-settings (1.5.1-6ubuntu0.1)
   touchfreeze ()
   firmware-linux ()
The following packages will be REMOVED:
   asymptote (2.15-1)
   braid (1.0.0-0ubuntu2)
   cantor-backend-kalgebra (4.10.2-0ubuntu1~ubuntu12.04~ppa2)
   cantor-backend-octave (4.10.2-0ubuntu1~ubuntu12.04~ppa2)
   dosbox (0.74-2)
   filezilla (3.5.3-1ubuntu2)
   freeglut3 (2.6.0-1ubuntu3)
   gvfs (1.12.1-0ubuntu1.2)
   gvfs-backends (1.12.1-0ubuntu1.2)
   gvfs-daemons (1.12.1-0ubuntu1.2)
   icedtea-7-plugin (1.2-2ubuntu1.3)
   java3ds-fileloader (1.2+dfsg-1)
   kalgebra (4.10.2-0ubuntu1~ubuntu12.04~ppa2)
   kde-window-manager (4.10.2-0ubuntu1~ubuntu12.04~ppa3)
   kde-window-manager-common (4.10.2-0ubuntu1~ubuntu12.04~ppa3)
   kde-workspace (4.10.2-0ubuntu1~ubuntu12.04~ppa3)
   kde-workspace-bin (4.10.2-0ubuntu1~ubuntu12.04~ppa3)
   kinfocenter (4.10.2-0ubuntu1~ubuntu12.04~ppa3)
   krita (2.6.1-0ubuntu5~ubuntu12.04.2~ppa2)
   kubuntu-desktop (1.254)
   kubuntu-netbook (1.254)
   libalien-wxwidgets-perl (0.54+dfsg-1)
   libanalitzagui4abi2 (4.10.2-0ubuntu1~ubuntu12.04~ppa1)
   libanalitzaplot4 (4.10.2-0ubuntu1~ubuntu12.04~ppa1)
   libegl1-mesa (8.0.4-0ubuntu0.4)
   libegl1-mesa-drivers (8.0.4-0ubuntu0.4)
   libfltk1.1 (1.1.10-10)
   libgbm1 (8.0.4-0ubuntu0.4)
   libgl1-mesa-dri (8.0.4-0ubuntu0.4)
   libgl1-mesa-glx (8.0.4-0ubuntu0.4)
   libglapi-mesa (8.0.4-0ubuntu0.4)
   libglew1.6 (1.6.0-4)
   libglu1-mesa (8.0.4-0ubuntu0.4)
   libglu1-mesa-dev (8.0.4-0ubuntu0.4)
   libjava3d-java (1.5.2+dfsg-5)
   libjava3d-jni (1.5.2+dfsg-5)
   libkwinglutils1abi1 (4.10.2-0ubuntu1~ubuntu12.04~ppa3)
   libopenvg1-mesa (8.0.4-0ubuntu0.4)
   libpadre-plugin-xml-perl (0.10-3)
   libqt4-opengl-dev (4.8.2+dfsg-2ubuntu1~precise1~ppa2)
   libqwtplot3d-qt4-0 (0.2.7+svn191-5ubuntu2)
   libswt-glx-gtk-3-jni (3.7.2-2)
   libvisual-0.4-plugins (0.4.0.dfsg.1-7)
   libwx-perl (0.9903-1)
   libwx-perl-processstream-perl (0.29-1)
   libwxgtk2.8-dev (2.8.12.1-6ubuntu2.2)
   libxatracker1 (8.0.4-0ubuntu0.4)
   nvidia-cg-toolkit (3.0.0016-0ubuntu1)
   octave-control (1.0.11-2)
   octave-data-smoothing (1.2.3-1)
   octave-image (1.0.14-2)
   octave-io (1.0.14-2)
   octave-miscellaneous (1.0.11-1)
   octave-optim (1.0.17-1)
   octave-plot (1.0.8-1)
   octave-plplot (5.9.9-2ubuntu2)
   octave-strings (1.0.7-3)
   octave-struct (1.0.9-1)
   octave3.2 (3.2.4-12)
   openjdk-7-jdk (7u15-2.3.7-0ubuntu1~12.04.1)
   openjdk-7-jre (7u15-2.3.7-0ubuntu1~12.04.1)
   padre (0.90.ds1-1)
   phonon-backend-gstreamer (4.7.0really4.6.3-0ubuntu0.12.04.1)
   qtiplot (0.9.8.8-3)
   remmina-plugin-xdmcp (1.0.0-1ubuntu6.2)
   scidavis (0.2.4-3.2ubuntu1)
   sweethome3d (3.4+dfsg-1)
   virtualbox-4.2 (4.2.10-84104~Ubuntu~precise)
   vlc (2.0.5-0ubuntu0.12.04.1)
   x11-utils (7.6+4ubuntu0.1)
   xorg (7.6+12ubuntu2)
   xserver-xephyr (1.11.4-0ubuntu10.12)
   xserver-xorg (7.6+12ubuntu2)
   xserver-xorg-core (1.11.4-0ubuntu10.12)
   xserver-xorg-input-all (7.6+12ubuntu2)
   xserver-xorg-input-evdev (2.7.0-0ubuntu1.2)
   xserver-xorg-input-mouse (1.7.1-1build3)
   xserver-xorg-input-synaptics (1.6.2-1ubuntu1~precise2)
   xserver-xorg-input-vmmouse (12.9.0-0ubuntu0.1)
   xserver-xorg-input-wacom (0.14.0-0ubuntu2.1)
   xserver-xorg-lts-precise (7.6+12ubuntu2)
   xserver-xorg-video-all (7.6+12ubuntu2)
   xserver-xorg-video-ati (6.14.99~git20111219.aacbd629-0ubuntu2)
   xserver-xorg-video-cirrus (1.3.2-4build1)
   xserver-xorg-video-fbdev (0.4.2-4ubuntu2)
   xserver-xorg-video-intel (2.17.0-1ubuntu4.4)
   xserver-xorg-video-mach64 (6.9.0-1build2)
   xserver-xorg-video-mga (1.4.13.dfsg-4build2)
   xserver-xorg-video-neomagic (1.2.5-2build2)
   xserver-xorg-video-nouveau (0.0.16+git20111201+b5534a1-1build3)
   xserver-xorg-video-openchrome (0.2.904+svn1050-1)
   xserver-xorg-video-qxl (0.0.16-2ubuntu0.1)
   xserver-xorg-video-r128 (6.8.1-5build2)
   xserver-xorg-video-radeon (6.14.99~git20111219.aacbd629-0ubuntu2)
   xserver-xorg-video-s3 (0.6.3-4build2)
   xserver-xorg-video-savage (2.3.3-1ubuntu1)
   xserver-xorg-video-siliconmotion (1.7.5-1build2)
   xserver-xorg-video-sis (0.10.3-3build2)
   xserver-xorg-video-sisusb (0.9.4-2build2)
   xserver-xorg-video-tdfx (1.4.3-4build2)
   xserver-xorg-video-trident (1.3.4-2build2)
   xserver-xorg-video-vesa (2.3.0-7build2)
   xserver-xorg-video-vmware (12.0.1-1ubuntu1.1)
The following NEW packages will be installed:
   libgl1-mesa-dri-lts-quantal (9.0.3-0ubuntu0.1~precise1)
   libgl1-mesa-glx-lts-quantal (9.0.3-0ubuntu0.1~precise1)
   libglapi-mesa-lts-quantal (9.0.3-0ubuntu0.1~precise1)
   libllvm3.1 (3.1-2ubuntu1~12.04)
   libtxc-dxtn-s2tc0 (0~git20110809-2.1)
   libxatracker1-lts-quantal (9.0.3-0ubuntu0.1~precise1)
   libxrandr-ltsq2 (1.4.0-1~precise1)
   linux-generic-lts-quantal (3.5.0.28.35)
   x11-xserver-utils-lts-quantal (7.7~3ubuntu1~precise1)
   xserver-common-lts-quantal (1.13.0-0ubuntu6.1~precise2)
   xserver-xorg-core-lts-quantal (1.13.0-0ubuntu6.1~precise2)
   xserver-xorg-input-all-lts-quantal (7.7+1ubuntu4~precise1)
   xserver-xorg-input-evdev-lts-quantal (2.7.3-0ubuntu2~precise1)
   xserver-xorg-input-mouse-lts-quantal (1.7.2-2build1~precise1)
   xserver-xorg-input-synaptics-lts-quantal (1.6.2-1ubuntu5~precise1)
   xserver-xorg-input-vmmouse-lts-quantal (12.9.0-0ubuntu3~precise1)
   xserver-xorg-input-wacom-lts-quantal (0.17.0-0ubuntu2~precise1)
   xserver-xorg-lts-quantal (7.7+1ubuntu4~precise1)
   xserver-xorg-video-all-lts-quantal (7.7+1ubuntu4~precise1)
   xserver-xorg-video-ati-lts-quantal (6.99.99~git20120913.8637f772-0ubuntu1~precise2)
   xserver-xorg-video-cirrus-lts-quantal (1.5.1-0ubuntu2~precise1)
   xserver-xorg-video-fbdev-lts-quantal (0.4.3-0ubuntu1~precise1)
   xserver-xorg-video-intel-lts-quantal (2.20.9-0ubuntu2~precise2)
   xserver-xorg-video-mach64-lts-quantal (6.9.3-0ubuntu1~precise2)
   xserver-xorg-video-mga-lts-quantal (1.6.2-0ubuntu1~precise2)
   xserver-xorg-video-modesetting-lts-quantal (0.5.0-0ubuntu1~precise2)
   xserver-xorg-video-neomagic-lts-quantal (1.2.7-0ubuntu1~precise1)
   xserver-xorg-video-nouveau-lts-quantal (1.0.2-0ubuntu3~precise2)
   xserver-xorg-video-openchrome-lts-quantal (0.3.1-0ubuntu1~precise2)
   xserver-xorg-video-r128-lts-quantal (6.9.1-0ubuntu1~precise2)
   xserver-xorg-video-radeon-lts-quantal (6.99.99~git20120913.8637f772-0ubuntu1~precise2)
   xserver-xorg-video-s3-lts-quantal (0.6.5-0ubuntu1~precise1)
   xserver-xorg-video-savage-lts-quantal (2.3.6-0ubuntu1~precise1)
   xserver-xorg-video-siliconmotion-lts-quantal (1.7.7-0ubuntu1~precise1)
   xserver-xorg-video-sis-lts-quantal (0.10.7-0ubuntu1~precise2)
   xserver-xorg-video-sisusb-lts-quantal (0.9.6-0ubuntu1~precise1)
   xserver-xorg-video-tdfx-lts-quantal (1.4.5-0ubuntu1~precise2)
   xserver-xorg-video-trident-lts-quantal (1.3.6-0ubuntu2~precise1)
   xserver-xorg-video-vesa-lts-quantal (2.3.2-0ubuntu1~precise1)
   xserver-xorg-video-vmware-lts-quantal (12.0.2+git.e5ac80d8-0ubuntu1~precise2)
0 upgraded, 40 newly installed, 103 to remove and 0 not upgraded.
E: Packages need to be removed but remove is disabled.
root@slpn-nb-mss:~# apt-get install -V --no-remove xserver-xorg-lts-quantal --solver aspcud
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Execute external solver... Done
The following extra packages will be installed:
   libegl1-mesa-lts-quantal (9.0.3-0ubuntu0.1~precise1)
   libgbm1-lts-quantal (9.0.3-0ubuntu0.1~precise1)
   libgl1-mesa-dri-lts-quantal (9.0.3-0ubuntu0.1~precise1)
   libgl1-mesa-glx-lts-quantal (9.0.3-0ubuntu0.1~precise1)
   libglapi-mesa-lts-quantal (9.0.3-0ubuntu0.1~precise1)
   libllvm3.1 (3.1-2ubuntu1~12.04)
   libwayland-ltsq0 (0.95.0-0ubuntu1~precise1)
   xserver-common-lts-quantal (1.13.0-0ubuntu6.1~precise2)
   xserver-xorg-core-lts-quantal (1.13.0-0ubuntu6.1~precise2)
   xserver-xorg-input-evdev-lts-quantal (2.7.3-0ubuntu2~precise1)
Suggested packages:
   libglide3 (2002.04.10ds1-7)
   xfonts-100dpi (1.0.3)
   xfonts-75dpi (1.0.3)
Recommended packages:
   libegl1-mesa-drivers-lts-quantal (9.0.3-0ubuntu0.1~precise1)
   libtxc-dxtn-s2tc0 (0~git20110809-2.1)
   linux-generic-lts-quantal (3.5.0.28.35)
   xserver-xorg-input-all-lts-quantal (7.7+1ubuntu4~precise1)
   xserver-xorg-video-all-lts-quantal (7.7+1ubuntu4~precise1)
   x11-xserver-utils-lts-quantal (7.7~3ubuntu1~precise1)
The following packages will be REMOVED:
   libegl1-mesa (8.0.4-0ubuntu0.4)
   libegl1-mesa-drivers (8.0.4-0ubuntu0.4)
   libgbm1 (8.0.4-0ubuntu0.4)
   libgl1-mesa-dri (8.0.4-0ubuntu0.4)
   libgl1-mesa-glx (8.0.4-0ubuntu0.4)
   libglapi-mesa (8.0.4-0ubuntu0.4)
   libopenvg1-mesa (8.0.4-0ubuntu0.4)
   libxatracker1 (8.0.4-0ubuntu0.4)
   xserver-xorg (7.6+12ubuntu2)
   xserver-xorg-core (1.11.4-0ubuntu10.12)
   xserver-xorg-input-all (7.6+12ubuntu2)
   xserver-xorg-input-evdev (2.7.0-0ubuntu1.2)
   xserver-xorg-input-mouse (1.7.1-1build3)
   xserver-xorg-input-synaptics (1.6.2-1ubuntu1~precise2)
   xserver-xorg-input-vmmouse (12.9.0-0ubuntu0.1)
   xserver-xorg-input-wacom (0.14.0-0ubuntu2.1)
   xserver-xorg-lts-precise (7.6+12ubuntu2)
   xserver-xorg-video-all (7.6+12ubuntu2)
   xserver-xorg-video-ati (6.14.99~git20111219.aacbd629-0ubuntu2)
   xserver-xorg-video-cirrus (1.3.2-4build1)
   xserver-xorg-video-fbdev (0.4.2-4ubuntu2)
   xserver-xorg-video-intel (2.17.0-1ubuntu4.4)
   xserver-xorg-video-mach64 (6.9.0-1build2)
   xserver-xorg-video-mga (1.4.13.dfsg-4build2)
   xserver-xorg-video-neomagic (1.2.5-2build2)
   xserver-xorg-video-nouveau (0.0.16+git20111201+b5534a1-1build3)
   xserver-xorg-video-openchrome (0.2.904+svn1050-1)
   xserver-xorg-video-qxl (0.0.16-2ubuntu0.1)
   xserver-xorg-video-r128 (6.8.1-5build2)
   xserver-xorg-video-radeon (6.14.99~git20111219.aacbd629-0ubuntu2)
   xserver-xorg-video-s3 (0.6.3-4build2)
   xserver-xorg-video-savage (2.3.3-1ubuntu1)
   xserver-xorg-video-siliconmotion (1.7.5-1build2)
   xserver-xorg-video-sis (0.10.3-3build2)
   xserver-xorg-video-sisusb (0.9.4-2build2)
   xserver-xorg-video-tdfx (1.4.3-4build2)
   xserver-xorg-video-trident (1.3.4-2build2)
   xserver-xorg-video-vesa (2.3.0-7build2)
   xserver-xorg-video-vmware (12.0.1-1ubuntu1.1)
The following NEW packages will be installed:
   libegl1-mesa-lts-quantal (9.0.3-0ubuntu0.1~precise1)
   libgbm1-lts-quantal (9.0.3-0ubuntu0.1~precise1)
   libgl1-mesa-dri-lts-quantal (9.0.3-0ubuntu0.1~precise1)
   libgl1-mesa-glx-lts-quantal (9.0.3-0ubuntu0.1~precise1)
   libglapi-mesa-lts-quantal (9.0.3-0ubuntu0.1~precise1)
   libllvm3.1 (3.1-2ubuntu1~12.04)
   libwayland-ltsq0 (0.95.0-0ubuntu1~precise1)
   xserver-common-lts-quantal (1.13.0-0ubuntu6.1~precise2)
   xserver-xorg-core-lts-quantal (1.13.0-0ubuntu6.1~precise2)
   xserver-xorg-input-evdev-lts-quantal (2.7.3-0ubuntu2~precise1)
   xserver-xorg-lts-quantal (7.7+1ubuntu4~precise1)
0 upgraded, 11 newly installed, 39 to remove and 0 not upgraded.
E: Packages need to be removed but remove is disabled.