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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

1982 questions
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9 answers

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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279
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9 answers

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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174
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5 answers

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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172
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7 answers

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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155
votes
12 answers

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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113
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10 answers

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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88
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3 answers

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
  • 1,832
86
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8 answers

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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73
votes
9 answers

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
  • 831
64
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3 answers

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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60
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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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53
votes
8 answers

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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47
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2 answers

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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46
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7 answers

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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45
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5 answers

How can I check if my CPU is AMD64 compatible?

I'm downloading both versions of Ubuntu 12.04 at this moment. I'd like to install AMD64 on my portable, even though it's an Intel machine. Is there a website (or another way) where I can check compatibility? Acer Aspire 5745G-724G50Mnks, Intel i7…
GUI Junkie
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