[Bug 976509] [NEW] Can't install Ubuntu 12.04 beta 2 Alternative

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I have tried to install Ubuntu 12.04 Alternative without success. Both
server and standard "live" installation works.

I have tried different methods but it seems like some dependencies does
not met the installers expectations.

This is the image that I have tried:
http://releases.ubuntu.com/12.04/ubuntu-12.04-beta2-alternate-amd64.iso

Installing the base systems seems OK but not the softwares. I got a big
red screen with error message "An installation step failed..."

"Work around" is to install server and then ubuntu-desktop meta package.
I want to use LVM and disk encryption so I cant use the standard
installation.

This is the syslog error message:
Apr  8 11:27:02 in-target: Some packages could not be installed. This may mean that you have
Apr  8 11:27:02 in-target: requested an impossible situation or if you are using the unstable
Apr  8 11:27:02 in-target: distribution that some required packages have not yet been created
Apr  8 11:27:02 in-target: or been moved out of Incoming.
Apr  8 11:27:02 in-target: The following information may help to resolve the situation:
Apr  8 11:27:02 in-target: 
Apr  8 11:27:02 in-target: The following packages have unmet dependencies:
Apr  8 11:27:02 in-target:  gnome-control-center : Depends: libnm-gtk0 but it is not installable
Apr  8 11:27:02 in-target:  network-manager-pptp : Depends: libnm-glib-vpn1 (>= 0.7.999) but it is not installable
Apr  8 11:27:02 in-target:  network-manager-pptp-gnome : Depends: libnm-glib-vpn1 (>= 0.8.998) but it is not installable
Apr  8 11:27:02 in-target:  xserver-xorg-video-all : Depends: xserver-xorg-video-ati but it is not installable
Apr  8 11:27:02 in-target:                           Depends: xserver-xorg-video-nouveau but it is not installable
Apr  8 11:27:02 in-target: E: Unable to correct problems, you have held broken packages.
Apr  8 11:27:02 in-target: tasksel: aptitude failed (100)
Apr  8 11:27:03 main-menu[368]: WARNING **: Configuring 'pkgsel' failed with error code 1
Apr  8 11:27:03 main-menu[368]: WARNING **: Menu item 'pkgsel' failed.
Apr  8 11:28:08 main-menu[368]: INFO: Modifying debconf priority limit from 'high' to 'medium'
Apr  8 11:28:08 debconf: Setting debconf/priority to medium
Apr  8 11:28:09 main-menu[368]: DEBUG: resolver (libnewt0.52): package doesn't exist (ignored)
Apr  8 11:28:09 main-menu[368]: DEBUG: resolver (ext2-modules): package doesn't exist (ignored)
Apr  8 11:28:16 main-menu[368]: INFO: Menu item 'save-logs' selected
Apr  8 11:28:22 main-menu[368]: DEBUG: resolver (libnewt0.52): package doesn't exist (ignored)
Apr  8 11:28:22 main-menu[368]: DEBUG: resolver (ext2-modules): package doesn't exist (ignored)


Providing all debug files from the installer as attachments

** Affects: debian-installer (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bot-comment
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Can't install Ubuntu 12.04 beta 2 Alternative
https://bugs.launchpad.net/bugs/976509
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