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• MacBook Pro 5.5 32-bit or 64-bit 12.04 LTS

  - by Barkerto

  I'm currently running Ubuntu 12.04 LTS 64-bit on a Macbook Pro 5.5. I'm dealing with a couple of issues with the backlight and other little pesky things which with my understanding could be caused by the silly Mac, or just a brand new LTS, or both. Is it known for macs running ubuntu to run better with the 64-bit or 32-bit? I know that the bit size deals with info transfer, but I'm just curious if the versions react differently with the macs cpu and hardware (for example if I switch to 32-bit would the backlight issue be resolved) and resulting in a better user experience. =) thanks in advance

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• installing Ubuntu 32 bit and Lubuntu 64 bit with the same home directories

  - by rakesh

  Mine is a 64 bit machine and I had installed "32" bit Ubuntu to try it out and hence installed many apps and developed many things and configured it for many things. Now it seems that my laptop needs more resources as my development needs so much. My question is :to free up install Lubuntu "64" bit in other partition which uses the same home directory and apps and my development rendering my laptop to be faster than before. Is this possible ? Thanks in Advance.

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• Chroot into a 32 bit version of ubuntu from a 64 bit host

  - by Leif Andersen

  I have a piece of software that only runs on 32 bit linux (Xilinx webPack 10.1, apperently it 'has' to be the old version because that's the latest one compatible with their boards), anyway, this version is only compatible with 32 bit linux. So, I head off to this page to see what I can do: https://help.ubuntu.com/community/32bit_and_64bit Of the 4 options (listed at the bottom): I already installed ia32-libs, and it's still not working I could do that one if needed (which I ended up doing). No, I don't want to be working from a vm all of next semester, that would be painful and I'd rather just reinstall my whole computer to a 32 bit os (which I don't want to do). It didn't sound like it was the best option based on what I've seen. So I went off to do #2, and set up a chroot for 32 bit ubuntu. It linked to this tutorial: https://help.ubuntu.com/community/DebootstrapChroot As I'm running ubuntu 10.10 I made the lucid and newer version changes. Which is to say I wrote: [hardy-i386] description=Ubuntu 8.04 Hardy for i386 directory=/srv/chroot/hardy-i386 personality=linux32 root-users=leif type=directory users=leif to /etc/schroot/chroot.d/hardy-i386 (Note though that I did save it once before I had the file properly formatted, I saved the correct version moments later though). I then ran: $ sudo mkdir -p /srv/chroot/hardy_i386 $ sudo debootstrap --variant=buildd --arch i386 hardy /srv/chroot/hardy_i386 http://archive.ubuntu.com/ubuntu/ Then I ran: $ schroot -l And it showed the proper chroot, but then when I ran: $ schroot -c hardy-i386 -u root I got the following error: E: 10mount: error: Directory '/srv/chroot/hardy-i386' does not exist E: 10mount: warning: Mount location /var/lib/schroot/mount/hardy-i386-80359697-2164-4b10-a05a-89b0f497c4f1 no longer exists; skipping unmount E: hardy-i386-80359697-2164-4b10-a05a-89b0f497c4f1: Chroot setup failed: stage=setup-start Can anyone help me figure out what the problem is? Oh, by the way: /srv/chroot/hardy-i386 most certainly exists. I've also tried it replacing all references with hardy to lucid, to no avail. Oh, one more thing, I did set up the chrome os environment a month back or so: http://www.chromium.org/chromium-os/developer-guide and it had me use something with chmod. So, can anyone figure out what the problem is? Thank you.

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• Running 64 bit Ubuntu distribution from 32 bit Ubuntu

  - by csg

  Related to this question How do I run qemu with 64bit processor on a 64bit machine?, I'm trying to run latest ubuntu 11.10 64bit distribution under Ubuntu 11.04 32 bit using qemu on a core2duo (64 bit cpu) machine, using following qemu parameters with no success. Error under qemu: "This kernel required an x86-64 CPU, but only detected an i686 CPU. Unable to boot - please use a kernel appropiate for your CPU" Isn't qemu suppose to emulate a 64 bit machine? I think I'm missing something, but I can't figure it out. qemu -cpu (kvm64|core2duo|qemu64) -boot d -cdrom ubuntu-11.10-desktop-amd64.iso qemu-system-x86_64 -boot d -cdrom ubuntu-11.10-desktop-amd64.iso Here is my uname -m i686 Here is my /proc/cpuinfo processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Intel(R) Core(TM)2 Duo CPU P8400 @ 2.26GHz stepping : 6 cpu MHz : 800.000 cache size : 3072 KB physical id : 0 siblings : 2 core id : 1 cpu cores : 2 apicid : 1 initial apicid : 1 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 lahf_lm dts tpr_shadow vnmi flexpriority bogomips : 4522.45 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management:

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• Steam on 64-bit 14.04: need some help, missing a few 32-bit libs

  - by YellowShark

  Steam says I'm missing the following libs, I'm hoping someone can help me get things in better shape: xyz@abc:~$ STEAM_RUNTIME=0 steam Running Steam on ubuntu 14.04 64-bit STEAM_RUNTIME is disabled by the user Error: You are missing the following 32-bit libraries, and Steam may not run: libpangoft2-1.0.so.0 libpango-1.0.so.0 libgtk-x11-2.0.so.0 libgdk_pixbuf-2.0.so.0 Installing breakpad exception handler for appid(steam)/version(1401381906_client) Installing breakpad exception handler for appid(steam)/version(1401381906_client) [2014-06-11 20:45:39] Startup - updater built May 29 2014 09:19:23 [2014-06-11 20:45:39] Verifying installation... [2014-06-11 20:45:39] Verification complete [2014-06-11 20:45:42] Shutdown I tried installing the following i386 packages: libpango-1.0-0:i386, libpangoft2-1.0-0:i386, and libgdk-pixbuf2.0-0:i386, and symlinking the .so files (from usr/lib/i386whatever../) into the ~/.local/share/Steam/ubuntu12_32/ folder, but wasn't able to find the right match for the gtk-x11 lib, and ultimately would up with a different, but still non-working situation. So I've back-tracked to this point, and have removed those i386 packages for now. It's worth noting thatSteam runs if I don't use STEAM_RUNTIME=0. Also, Steam seemed to "recognize" the i386 version of the libpango & libpangoft2 libs after I symlinked them into place, during the course of my troubleshooting; when I would rerun STEAM_RUNTIME=0 steam, it wouldn't list those two items as missing anymore. Instead though, I had a bunch of gtk-related issues, something about overlay-scrollbar not available, as well as warnings that it can't find the murrine engine... a whole bunch of stuff that sounded like I'd gone too far down the wrong path. Anyhow, any help sorting this out would be appreciated, and thanks!

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• 32-bit and 64-bit CPU/OS [closed]

  - by learnerforever

  Possible Duplicates: how to know if a computer is 32 bit or 64 bit 32-bit v/s 64-bit systems Hi, This 32-bit and 64-bit thing baffles me. It's not often that I run across it, but when I do, it baffles me. Like when I want to download software from http://www.google.com/ime/transliteration/ it asks me which version to download. I have win XP running on my thinkpad machine. How do I find out if my hardware is 32-bit or 64-bit. Also, how do I find if OS is 32-bit or 64-bit and thus how to know which version to download from this link. Also for any installed application say firefox, how do I know which bit version is installed. How popular are 64-bit hardware/OSs?. Are all the new CPUs and OSs supporting 64-bit and 32-bit for backwards compatible or 64-bit is still a luxury? Thanks,

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• 32-bit program using Office IFilters when 64-bit Office is installed

  - by user56312

  64-bit Office installs 64-bit IFilters for its document types, but does not install 32-bit IFilters. Therefore, 32-bit programs that rely on IFilters cannot work with 64-bit Office. And although there is an option to download 32-bit IFilters from Microsoft, the installer will not run on a 64-bit machine, complaining about architecture mismatch. Is there any way to make 32-bit programs extract text from Office documents using IFilters when 64-bit Office is installed? Thanks.

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• 64 bit vs 32 bit

  - by user53864

  When I was doing my course MCSA, I'm taught the following: With a 32-bit processor only 32-bit operating system can be installed. with a 64-bit processor both 32-bit & 64-bit operating system can be installed It's said 64-bit os cannot be installed on a 32-bit processor. I just want to make sure the above points because recently I'm asked to installed Windows Server 2008 R2 Enterprize and while installation it showed only x64 and it simply installed it. I was thinking all the computers in my office having a 32-bit processor. If so how it could be possible to install a x64 bit os on a 32-bit processor? or I'm wrong with the 1st point or the processor may be of 64-bit(I don't know how to check). I'm confused... One thing what I know the benefits of 64-bit over 32-bit is faster operation. If anyone could tell me other benefits, it could be helpful for me. Thanks!

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• 64 bit vs 32 bit

  - by user51737

  When I was doing my course MCSA, I'm taught the following: With a 32-bit processor only 32-bit operating system can be installed. with a 64-bit processor both 32-bit & 64-bit operating system can be installed It's said 64-bit os cannot be installed on a 32-bit processor. I just want to make sure the above points because recently I'm asked to installed Windows Server 2008 R2 Enterprize and while installation it showed only x64 and it simply installed it. I was thinking all the computers in my office having a 32-bit processor. If so how it could be possible to install a x64 bit os on a 32-bit processor? or I'm wrong with the 1st point or the processor may be of 64-bit(I don't know how to check). I'm confused... One thing what I know the benefits of 64-bit over 32-bit is faster operation. If anyone could tell me other benefits, it could be helpful for me. Thanks!

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• VMware Workstation reboot 32-bit host when starting 32/64-bit guest using VT-x

  - by Powerman

  I'm trying to start 64-bit guest (MacOSX and Windows7) on 32-bit host (Hardened Gentoo Linux, kernel 2.6.28-hardened-r9) using VMware Workstation (6.5.3.185404 and 7.0.1.227600). If VT-X disabled in BIOS, VMware refuse to start 64-bit guest (as expected). If VT-X enabled in BIOS, VMware start guest without complaining, but then, in about a second (I suppose as soon as guest try to switch on 64-bit) my host reboots (actually, it's more like reset - normal reboot procedure skipped and BIOS POST start immediately). My hardware is Core 2 Duo 6600 on ASUS P5B-Deluxe with latest stable BIOS 1101. I've power-cycled system, then enabled Vanderpool in BIOS. My CPU doesn't support Trusted Execution Technology, and there no way to disable it in BIOS. I've rebooted several times after that, sometimes with power-cycled, and ensure Vandertool is enabled in BIOS. I've also run VMware-guest64check-5.5.0-18463 tool, and it report "This host is capable of running a 64-bit guest operating system under this VMware product.". About a year ago I tried to disable hardened in kernel to ensure this isn't because of PaX/GrSecurity, but that doesn't help. I have not checked 32-bit guests with VT-X enabled yet, but without VT-X they works ok. ASUS provide "beta" BIOS updates, but according to their descriptions these updates doesn't fix this issue, so I'm not sure is it good idea to try it. My best guess now it's motherboard/BIOS bug. Any ideas? Update 1: I've tried to boot vt.iso provided at http://communities.vmware.com/docs/DOC-8978 and here is it report: CPU 0: VT is enabled on this core CPU 1: VT is enabled on this core Update 2: I've just tried to boot 32-bit guests (Windows7, Ubuntu9.04 and Gentoo) using all possible virtualization modes. In Automatic, Automatic with Replay, Binary translation everything works, in Intel VT-x/EPT or AMD-V/RVI I got message "This host does not support EPT. Using software virtualization with a software MMU." and everything works. BUT in Intel VT-x or AMD-V mode all 32-bit guests reset host just like 64-bit guests! So, this issue is not specific to 64-bit guests. One more thing. Using Intel VT-x or AMD-V mode for both 32/64-bit guests my host reset right after starting VM, i.e. before VM BIOS POST and before guest even start booting. But using Intel VT-x/EPT or AMD-V/RVI VM BIOS runs ok, then 64-bit guests start booting (Windows7 completed "Loading files" progressbar), and only after that host reset.

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• Installing 64-bit Ubuntu alongside 32-bit Ubuntu?

  - by Macha

  I have a 64-bit processor in my PC, but because of worries over application compatibility, up until now I have been using 32-bit Ubuntu (and 32-bit Vista because Dell wouldn't sell me 64-bit with my PC). Is it possible for me to install 64-bit Ubuntu alongside 32-bit ubuntu and 32-bit Windows Vista, so I can choose between them at boot and share data, and without uninstalling my 32-bit Ubuntu? My partitions are as follows Drive 1: 10 GB Vista recovery partition (E:), 240 GB Windows NTFS parition (230 GB used, C:). Drive 2: 167 GB Windows NTFS Partition (130 GB used, D: ), 8 GB swap partition, 13 GB / partition (6 GB used), 62 GB /home partition (20 GB used).

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• VMware Workstation reboot 32-bit host when starting 64-bit guest

  - by Powerman

  I'm trying to start 64-bit guest (MacOSX and Windows7) on 32-bit host (Hardened Gentoo Linux, kernel 2.6.28-hardened-r9) using VMware Workstation (6.5.3.185404 and 7.0.1.227600). If VT-X disabled in BIOS, VMware refuse to start 64-bit guest (as expected). If VT-X enabled in BIOS, VMware start guest without complaining, but then, in about a second (I suppose as soon as guest try to switch on 64-bit) my host reboots (actually, it's more like reset - normal reboot procedure skipped and BIOS POST start immediately). My hardware is Core 2 Duo 6600 on ASUS P5B-Deluxe with latest stable BIOS 1101. I've power-cycled system, then enabled Vanderpool in BIOS. My CPU doesn't support Trusted Execution Technology, and there no way to disable it in BIOS. I've rebooted several times after that, sometimes with power-cycled, and ensure Vandertool is enabled in BIOS. I've also run VMware-guest64check-5.5.0-18463 tool, and it report "This host is capable of running a 64-bit guest operating system under this VMware product.". About a year ago I tried to disable hardened in kernel to ensure this isn't because of PaX/GrSecurity, but that doesn't help. I have not checked 32-bit guests with VT-X enabled yet, but without VT-X they works ok. ASUS provide "beta" BIOS updates, but according to their descriptions these updates doesn't fix this issue, so I'm not sure is it good idea to try it. My best guess now it's motherboard/BIOS bug. Any ideas?

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• Substitute drivers for a 32 bit printer on a 64 bit OS

  - by Derek G

  I'm trying to use an old GCC Elite 12N B&W laser printer for printing schoolwork and other miscellany on 64 bit Windows 7. The only drivers available are 32 bit. As far as I know, it's not possible to use 32 bit drivers on a 64 bit OS, but is there some sort of generic Postscript driver I could substitute? If the drivers are, in fact, compatible, could someone suggest a way to modify the INF file so that Windows will recognize it? Thanks for your help!

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• Install Windows 8 64-bit over the top of Windows 8 32-bit

  - by Andrew Gee

  I currently have Windows 8 32-bit installed from MSDN (I didn't realise at the time that my processor supports 64-bit). I understand that you can't upgrade within Windows 32-bit to 64-bit directly from the ISO. I have burned the ISO to a DVD, and have attempted booting from this drive. The problem I am encountering: The operating system couldn't be loaded because a required file is missing or contains errors. File: CI.dll Error code: 0xc0000221 You'll need to use the recovery tools on your installation media. If you don't have any installation media (like a disc or USB device), contact your system administrator or PC manufacturer. Additional info: Computer: HP Pavillion m9280.uk-a Processor: AMD Phenom 9600 Quad-Core RAM: 3 1GB sticks Thanks in advance!

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• Ubuntu Natty: 32-bit userland, 64-bit kernel?

  - by dsimcha

  I'm trying to manually install a 64-bit kernel for 32-bit Ubuntu. I have my reasons for doing so, but they're too complicated to explain here. Prior to Natty, this worked fine. Now, on Natty, I get the following error message when I try doing it the same way: dsimcha@dsimcha-laptop:~$ sudo dpkg -i --force-architecture linux-image-2.6.38-8-server_2.6.38-8.42_amd64.deb [sudo] password for dsimcha: dpkg: error processing linux-image-2.6.38-8-server_2.6.38-8.42_amd64.deb (--install): cannot access archive: No such file or directory Errors were encountered while processing: linux-image-2.6.38-8-server_2.6.38-8.42_amd64.deb dsimcha@dsimcha-laptop:~$ cd Downloads/ dsimcha@dsimcha-laptop:~/Downloads$ sudo dpkg -i --force-architecture linux-image-2.6.38-8-server_2.6.38-8.42_amd64.deb dpkg: warning: overriding problem because --force enabled: package architecture (amd64) does not match system (i386) (Reading database ... 159153 files and directories currently installed.) Preparing to replace linux-image-2.6.38-8-server:amd64 2.6.38-8.42 (using linux-image-2.6.38-8-server_2.6.38-8.42_amd64.deb) ... Done. Unpacking replacement linux-image-2.6.38-8-server:amd64 ... Examining /etc/kernel/postrm.d . run-parts: executing /etc/kernel/postrm.d/initramfs-tools 2.6.38-8-server /boot/vmlinuz-2.6.38-8-server run-parts: executing /etc/kernel/postrm.d/zz-update-grub 2.6.38-8-server /boot/vmlinuz-2.6.38-8-server dpkg: dependency problems prevent configuration of linux-image-2.6.38-8-server:amd64: linux-image-2.6.38-8-server:amd64 depends on initramfs-tools (>= 0.36ubuntu6). linux-image-2.6.38-8-server:amd64 depends on coreutils | fileutils (>= 4.0); however: Package coreutils:amd64 is not installed. linux-image-2.6.38-8-server:amd64 depends on module-init-tools (>= 3.3-pre11-4ubuntu3); however: linux-image-2.6.38-8-server:amd64 depends on wireless-crda; however: dpkg: error processing linux-image-2.6.38-8-server:amd64 (--install): dependency problems - leaving unconfigured Errors were encountered while processing: linux-image-2.6.38-8-server:amd64 When I try the dependencies manually, I get, for example: dsimcha@dsimcha-laptop:~/Downloads$ sudo dpkg -i --force-architecture coreutils_8.5-1ubuntu6_amd64.deb dpkg: warning: overriding problem because --force enabled: package architecture (amd64) does not match system (i386) dpkg: error processing coreutils_8.5-1ubuntu6_amd64.deb (--install): coreutils:amd64 8.5-1ubuntu6 (Multi-Arch: no) is not co-installable with coreutils:i386 8.5-1ubuntu6 (Multi-Arch: no) which is currently installed Errors were encountered while processing: coreutils_8.5-1ubuntu6_amd64.deb Has anyone had any success installing 64-bit kernels on 32-bit Natty? If so, how can this be done?

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• Run an application only compatible with 32-bit on 64-bit machine

  - by Glenn

  Title's pretty explanatory. I have an application(Second Life) that isn't compatible with 64-bit windows 7. It says that it is compatible with Windows XP, Vista, and 7 but only the 32-bit version of 7. I need to know if it's possible for me to download something to make the application compatible with my computer. I've run troubleshooters and ran it as windows compatible XP service pack 2 and tried again with service pack 3.

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• Issue running 32-bit executable on 64-bit Windows

  - by David Murdoch

  I'm using wkhtmltopdf to convert HTML web pages to PDFs. This works perfectly on my 32-bit dev server [unfortunately, I can't ship my machine :-p ]. However, when I deploy to the web application's 64-bit server the following errors are displayed: (running from cmd.exe) C:\>wkhtmltopdf http://www.google.com google.pdf Loading pages (1/5) QFontEngine::loadEngine: GetTextMetrics failed () ] 10% QFontEngineWin: GetTextMetrics failed () QFontEngineWin: GetTextMetrics failed () QFontEngine::loadEngine: GetTextMetrics failed () QFontEngineWin: GetTextMetrics failed () QFontEngineWin: GetTextMetrics failed () QFontEngineWin: GetTextMetrics failed () QFontEngine::loadEngine: GetTextMetrics failed () ] 36% QFontEngineWin: GetTextMetrics failed () QFontEngineWin: GetTextMetrics failed () // ...etc.... and the PDF is created and saved... just WITHOUT text. All form-fields, images, borders, tables, divs, spans, ps, etc are rendered accurately...just void of any text at all. Server information: Windows edition: Windows Server Standard Service Pack 2 Processor: Intel Xeon E5410 @ 2.33GHz 2.33 GHz Memory: 8.00 GB System type: 64-bit Operating System Can anyone give me a clue as to what is happening and how I can fix this? Also, I wasn't sure what to tag/title this question with...so if you can think of better tags/title comment them or edit the question. :-)

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• I'm confuse about these 2 statements about performance of 32 bit application on 64 bit Windows 7....

  - by metal gear solid

  Running some 32 bit applications on a 64 bit OS could actually be slower. The additional overheads in running 32 bit software in 64 bit mode could cause a slight degradation in performance. It will take some time for 64 bit software to become the norm. Source: http://www.w7forums.com/windows-7-64-bit-vs-32-bit-t484.html That depends. If you're working with large files or running applications that consume a great deal of memory, then 64-bit Windows will typically give you a slight performance advantage over 32-bit Windows running on identical hardware. This is true even when using 32-bit applications. Source: http://www.infoworld.com/d/windows/32-bit-windows-7-or-64-bit-windows-7-145?page=0,3 Which is true? If i go for 64 bit Windows 7 then will i feel more performance (Compare to 32 bit windows 7) of 3 years back purchased Adobe photoshop (I think it would be a 32 bit application) and some of other 32 bit applications ?

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• Perfomance of 8 bit operations on 64 bit architechture

  - by wobbily_col

  I am usually a Python / Database programmer, and I am considering using C for a problem. I have a set of sequences, 8 characters long with 4 possible characters. My problem involves combining sets of these sequences and filtering which sets match a criteria. The combinations of 5 run into billions of rows and takes around an hour to run. So I can represent each sequence as 2 bytes. If I am working on a 64 bit architechture will I gain any advantage by keeping these data structures as 2 bytes when I generate the combinations, or will I be as well storing them as 8 bytes / double ? (64 bit = 8 x 8) If I am on a 64 bit architecture, all registers will be 64 bit, so in terms of operations that shouldn´t be any faster (please correct me if I am wrong). Will I gain anything from the smaller storage requirements - can I fit more combinations in memory, or will they all take up 64 bits anyway? And finally, am I likley to gain anything coding in C. I have a first version, which stores the sequence as a small int in a MySQL database. It then self joins the tabe to itself a number of times in order to generate all the possible combinations. The performance is acceptable, depending on how many combinations are generated. I assume the database must involve some overhead.

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• 32-bit / 64-bit processors - what is that feature officially called?

  - by JW01

  I see talk of CPU's being either 32-bit or 64-bit processors. Information which is often required on download pages But what is that feature officially called. i.e What's the inverse of saying "I have a 64-bit processor"? I want to say: The ??? of my processor is 64 bit What is the correct term to use for ??? I have looked at a random product on the Intel site and I suspect the correct word for this is "Instruction Set", but I'm not sure.

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• How does it matter if a character is 8 bit or 16 bit or 32 bit

  - by vin

  Well, I am reading Programing Windows with MFC, and I came across Unicode and ASCII code characters. I understood the point of using Unicode over ASCII, but what I do not get is how and why is it important to use 8bit/16bit/32bit character? What good does it do to the system? How does the processing of the operating system differ for different bits of character. My question here is, what does it mean to a character when it is a x-bit character?

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• Installing and using 32-bit software in 64-bit Linux

  - by Isxek

  Is there a way to install and run i386 software packages inside an AMD64 version of Xubuntu (v9.10)? Just to get an idea, how much effort would it require to port it to something usable within the said OS. I imagine it would be a lot. Thanks! If you need more info (specs, etc.) let me know.

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• Using 32-bit drivers on a 64-bit operating system

  - by doug

  Can I use the 32 bits version of my drivers on a Windows 7 x64 machine?

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• 64-bit 13.10 shows 1GB less RAM than 64-bit 13.04 did

  - by kiloseven

  Multiple 64-bit versions (Kubuntu, Lubuntu and Xubuntu) once installed on my ThinkPad R60 show 3GB of RAM, not the correct 4GB of RAM. Last week with 13.04, I had 4GB of RAM (which matches the BIOS) and this week I have 3GB available. Inquiring minds want to know. Details follow: Linux R60 3.11.0-12-generic #19-Ubuntu SMP Wed Oct 9 16:20:46 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux r60 free -m reports: _ total used free shared buffers cached Mem: 3001 854 2146 0 22 486 -/+ buffers/cache: 346 2655 Swap: 0 0 0 . . . . . . lshw shows: description: Notebook product: 9459AT8 () vendor: LENOVO version: ThinkPad R60/R60i serial: redacted width: 64 bits capabilities: smbios-2.4 dmi-2.4 vsyscall32 configuration: administrator_password=disabled boot=normal chassis=notebook family=ThinkPad R60/R60i frontpanel_password=unknown keyboard_password=disabled power-on_password=disabled uuid=126E4001-48CA-11CB-9D53-B982AE0D1ABB *-core description: Motherboard product: 9459AT8 vendor: LENOVO physical id: 0 version: Not Available *-firmware description: BIOS vendor: LENOVO physical id: 0 version: 7CETC1WW (2.11 ) date: 01/09/2007 size: 144KiB capacity: 1984KiB capabilities: pci pcmcia pnp upgrade shadowing escd cdboot bootselect socketedrom edd acpi usb biosbootspecification {snip} *-memory description: System Memory physical id: 29 slot: System board or motherboard size: 4GiB *-bank:0 description: SODIMM DDR2 Synchronous physical id: 0 slot: DIMM 1 size: 2GiB width: 64 bits *-bank:1 description: SODIMM DDR2 Synchronous physical id: 1 slot: DIMM 2 size: 2GiB width: 64 bits dpkg -l linux-* returns: Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Description +++-======================================-=======================================-========================================================================== un linux-doc-3.2.0 (no description available) ii linux-firmware 1.79.6 Firmware for Linux kernel drivers ii linux-generic 3.2.0.52.62 Complete Generic Linux kernel un linux-headers (no description available) un linux-headers-3 (no description available) un linux-headers-3.0 (no description available) un linux-headers-3.2.0-23 (no description available) un linux-headers-3.2.0-23-generic (no description available) ii linux-headers-3.2.0-52 3.2.0-52.78 Header files related to Linux kernel version 3.2.0 ii linux-headers-3.2.0-52-generic 3.2.0-52.78 Linux kernel headers for version 3.2.0 on 64 bit x86 SMP ii linux-headers-generic 3.2.0.52.62 Generic Linux kernel headers un linux-image (no description available) un linux-image-3.0 (no description available) ii linux-image-3.2.0-52-generic 3.2.0-52.78 Linux kernel image for version 3.2.0 on 64 bit x86 SMP ii linux-image-generic 3.2.0.52.62 Generic Linux kernel image un linux-initramfs-tool (no description available) un linux-kernel-headers (no description available) un linux-kernel-log-daemon (no description available) ii linux-libc-dev 3.2.0-52.78 Linux Kernel Headers for development un linux-restricted-common (no description available) ii linux-sound-base 1.0.25+dfsg-0ubuntu1.1 base package for ALSA and OSS sound systems un linux-source-3.2.0 (no description available) un linux-tools (no description available)

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• Reasons for either 32-bit or 64-bit as development machine

  - by vartec

  I'm about to make a new Linux install, which will be primarily used for programming. I've seen benchmarks showing speed improvement of 64-bit version, however, I have hard time of telling how much these benchmarks translate to improvement in every day usage. And of course there are other aspects to consider. Usage I have in mind: mainly programming Python, with occasional C, C++ and Java; IDEs, which are using Java platforms (Eclipse and IntelliJ); on very rare occasions having to compile for 32-bit platform; not planning to have more than 64GB of RAM anytime soon (and I don't mind using PAE kernels); machine in question has 4GB RAM and Athlon II X2; What are pros and cons of choosing either i386 or x86_64 distro?

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