High expectations are raised by the press release at http://www.canonical.com/content/ubuntu-1204-lts-aims-conquer-enterprise-desktop "Ubuntu 12.04 LTS includes support for desktop virtualisation from Citrix and VMware, alongside Microsoft RDP 7.1. This means enterprise users now have a three-way choice for office productivity: remote delivery of desktop applications..."
However, there are no hits for Citrix or ICA in the Ubuntu Software Center (except advertisements to purchase magazine articles), and user experience is as follows:
"Installing Citrix in Linux is always a hazzle." in: Install Citrix Receiver on Ubuntu 12.04 http://zo0ok.com/techfindings/archives/760
Ubuntu 12.04 - Citrix Receiver Not Working http://ubuntuforums.org/showthread.php?t=1968781
Citrix ICA Client 12 on Ubuntu 12.04 64-bit https://help.ubuntu.com/community/CitrixICAClientHowTo#Citrix_ICA_Client_12_on_Ubuntu_12.04_64-bit
This is in part due to the unfortunate fact that broken packages to replace the "Receiver for Linux" 12.0 with 12.1 seem to have been available at first, coinciding with the Ubuntu 12.04 LTS launch.
However, as revealed at http://www.versitek.com/will-linux-desktop-adoption-grow-thanks-to-ubuntu-12-04/ "includes support" and "with 12.04, it will be embedded in the operating system" actually means "Microsoft RDP (Remote Desktop Protocol) support is directly integrated with Ubuntu. Citrix and VMware support is something that end users will have to take an extra step to acquire and download and install clients themselves."
It is thus left to each user to figure out that what they need is the "Receiver for Linux (12.1 Release Date: 4/23/2012) x86 client - requires OpenMotif v.2.3.1" (where the 64-bit version has the same small-print x86 designation) from http://www.citrix.com/English/ss/downloads/details.asp?downloadId=2323812&productId=1689163 (i.e. none of the system's preconfigured default sources), preferably in the .deb flavour.
What OpenMotif, Debian and the 32/64-bit architectures are is unlikely to be on the mind of average users trying to "just" make a freshly installed OS remotely access their corporate (virtual) machines.
A far cry from getting a meaningful entry on the Ubuntu Launcher (wfica with a question mark icon at best), the user having found the courage to install the above (for the right arch at that) ends up with a bunch of .DLL (!) files in /opt/Citrix/ICAClient and needs to know that e.g. Shift-Alt-CursorUp is required to switch back to a minimized session if it does not show a launcher icon of its own even at runtime.
In short, no package can be specified on the bug (a very valid one nonetheless) because there SHOULD BE one in Precise Pangolin, since "working closely with the Citrix and VMware guys to make that available" according to Steve George, VP of Communications and Products at Canonical, as quoted by Versitek above, ought to result in a simple way (through the standard interface) for users to retrieve and install these packages advertised as a particular highlight of Ubuntu 12.04 LTS.
In your own words at http://www.datamation.com/open-source/ubuntu-12.04-delivers-5-years-of-enterprise-linux-desktop-support.html: "corporate customers ... want to move across to a Linux desktop but ... have one or two legacy applications that hold them back. ... So making the process of connecting to and using those applications really seamless from a user perspective is an important step."
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