I confirm that this bug is fixed in newer releases. I tested gnome-disk-utility 3.18.3.1 on a Linux Mint MATE 18.0 32bit! and the benchmark works now.
I checked the 32bit iso image on a 32-bit hardware and on a 64-bit hardware: this bug is fixed on both. (although the latter is not a recommended setup) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-disk-utility in Ubuntu. https://bugs.launchpad.net/bugs/1081019 Title: Benchmark for disks always fails on 32 bit systems Status in gnome-disk-utility package in Ubuntu: Fix Released Bug description: I can not benchmark any harddisk I have. I tried with unmounted, usb-connected harddisks. Steps to reproduce: 1) Start gnome-disks 2) Select a Harddisk and unmount all partitions so the disk is not in use 3) Select "more actions..." button and then the point "Benchmark volume..." 4) Run "start benchmark..." and use the default settings and press the new button "start benchmarking" Now I get: Error seeking to offset 10002022400 (g-io-error-quark, 0) ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: gnome-disk-utility 3.6.1-1ubuntu1 ProcVersionSignature: Ubuntu 3.7.0-2.8-generic 3.7.0-rc5 Uname: Linux 3.7.0-2-generic i686 ApportVersion: 2.6.2-0ubuntu5 Architecture: i386 Date: Tue Nov 20 09:29:43 2012 InstallationDate: Installed on 2012-06-16 (156 days ago) InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423.2) MarkForUpload: True SourcePackage: gnome-disk-utility UpgradeStatus: Upgraded to raring on 2012-11-12 (7 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-disk-utility/+bug/1081019/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp