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I installed it but when I try to run it nothing shows.

On Adobe's requirements for Ubuntu page it says: "32-bit Intel® Pentium® processor or equivalent"

Can I infer from it that adobe reader doesn't run on 64-bit processors in Ubuntu?

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You're reading it wrong, you need a 32-bit as minimum to run it. 64-bit processors can handle 32-bit instructions as well as 64-bit. – Uri Herrera Jan 11 '13 at 20:01
@Uri, I see, thanks.. – Roy Jan 11 '13 at 20:55

Adobe Reader can run on 64-bit Ubuntu, but it's a 32-bit program, so you need to install the 32-bit version of the libraries it depends on. Since 12.04 Ubuntu uses the Multi Arch system to install dependencies like this.

First, install the 32-bit version of Adobe Reader's dependencies:

sudo apt-get install libgtk2.0-0:i386

Now we can install the 32-bit Acrobat Reader package downloaded from Adobe's Website:

sudo dpkg -i AdbeRdr9.5.5-1_i386linux_enu.deb
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You'll need to run this command to get Adobe Reader to actually work:

sudo apt-get install ia32-libs
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Unfortunately this won't work on Ubuntu 12.04 or later. See this question for an explanation why. – mars Mar 29 '14 at 22:01

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