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Questions tagged [64-bit]

Questions about the 64-bit architecture, and how to get software (including 32-bit applications) working on it.

Bitwidth is a measurement of how much data (the word size) a processor can handle in a single operation. A 64-bit CPU architecture (also called amd64 and X86_64) allows for faster performance and better multitasking than 32-bit (also called i386 and X86). A 32-bit processor can only address 4Gb of memory, so further available RAM is used less efficiently (with the help of PAE), while a 64-bit processor is not limited in this way as it could theoretically address about 1Tb.

Processors in modern laptop and desktop machines are able to run in both 32-bit and 64-bit mode and all Ubuntu flavors are currently available in both bitwidths, but Canonical have announced plans to drop support for 32-bit architecture in 2018.

32-bit applications can be run on a 64-bit system quite easily, but the reverse is not the case.

Further information can be found in the Ubuntu help wiki

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Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'xxx' doesn't support architecture 'i386'

Getting below error message while issuing : sudo apt-get update Get:1 http://us.archive.ubuntu.com/ubuntu xenial InRelease [95.8 kB] Ign:2 http://repo.mongodb.org/apt/debian wheezy/mongodb-org/3.2 InRelease …
Scott Stensland
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No such file or directory? But the file exists!

I've downloaded a game (Shank) but the bin file doesn't run. The error that is shown when I try to launch the executable is: bash: ./shank-linux-120720110-1-bin: No such file or directory
Francesco
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How to run 32-bit app in Ubuntu 64-bit?

I installed Ubuntu 14.04 and the current Android development SDK, which contains 32-bit executables. I found that I cannot run those 32-bit binaries. Trying to start them from bash gives me an error: $ ./adb bash: ./adb: No such file or…
Thomas Stuefe
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How do I create a 32-bit WINE prefix?

How do I create a 32-bit Wine prefix on Ubuntu 12.04 64-bit?
Levan
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Why does Ubuntu Download recommend 32-bit install?

Update for 13.10: 64-bit version is now the default and 32-bit is labelled "for machines with less than 2GB RAM" The Ubuntu desktop download screen has a pair of radio buttons you use to select whether you wish to download the 32-bit or 64-bit…
Warren Pena
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111
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Is it possible to "upgrade" from a 32bit to a 64bit installation?

As per title, I wish to know if I can, after a successful 32bit setup and consequent software installations, update to a 64bit version. I know how to partition (actually one of the solutions is to set /, /etc, /home, /var/www, and /opt as separate…
dag729
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My processor is 64-bit - does that mean I need the amd64 image?

My processor is an Intel Core 2 Duo P8600 (2.40GHz). As far as I know that's a 64-bit processor - I'm a bit confused as the architecture is called AMD 64, is this a generic name given to 64-bit architectures? I've heard of x64 but can't see a…
Ross
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How to force Wine into acting like 32-bit Windows on 64-bit Ubuntu?

When installing Wine on 64-bit Ubuntu 12.04, both 64-bit support and 32-bit support get installed. If I run wine foo.exe where foo.exe is a 64-bit-aware installer, it thinks it's on 64-bit Windows. This would be fine if this mode didn't fail, but in…
hsivonen
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How do I install the Nvidia driver for a GeForce GT 630

I recently installed 14.04. But now I need a new driver for my nVidia GeForce GT 630. The former driver was rejected as not compatible with the 64-bit. I found that other driver and when I wanted to install it in the terminal with sh I was called…
Horst Seeger
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6 answers

Problem starting Steam on ubuntu 15.04 64-bit

After installing and updating, whenever I start Steam, it gives me the following error: Running Steam on ubuntu 15.04 64-bit STEAM_RUNTIME is enabled automatically [2015-05-02 16:48:39] Startup - updater built Apr 13 2015 15:17:10 SteamUpdateUI: An…
QuietSwami
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Problems with Eclipse and Android SDK

I installed Eclipse, openjdk6 and downloaded and extracted the sdk manager file. Now, When I created an Android project I got the following error: 2012-06-06 18:44:40 - contactManager] /home/catia/android-sdks/platform-tools/aapt: error while…
csbl
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What is the difference between x86_64 amd64 and 64 bit?

I use a x86_64 bit Ubuntu, but whenever I try to do a live boot of any other 64 bit images like the GNOME 3.16 which was released yesterday, it does not work? Also some times when I try a virtual machine of a 64 bit image, it does not work…
jgm
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How do you run a 32-bit program on a 64-bit version of Ubuntu?

I have a 64-bit version of Ubuntu 13.10. I want to run a 32-bit version of a program. However I see ia32-libs is not included in 13.10. Is there a replacement package for this or what?
Cato
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How to remove all i386 packages from Ubuntu 64bit?

Over the time I installed many i386 packages, which I no longer need. How can I clean up the system and stay only with the amd64 packages?
yossile
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No such file or directory for existing executable

I just upgrade to Ubuntu 11.10 x64 from Ubuntu 11.04 32bit. But I find a really annoying problem. When I drag executable from file explorer to shell, the shell says bash: /home/fenfei/app/android-sdk-linux/platform-tools/adb: No such file or…
Fenfei
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