I've just hit this trying to do a netinstall of vivid. Looking at the source, algorithm 10 is sha512. The binary for the installer is built with --enable-minimal, which disables sha512, but then it isn't specifically enabled. Attached patch to enable it. I've tested this by building it myself and using wget to replace the included binary with mine, I successfully completed the install.
** Patch added: "gnupg-1.4.18 enable sha512 for minimal.patch" https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1403982/+attachment/4294018/+files/gnupg-1.4.18%20enable%20sha512%20for%20minimal.patch ** Also affects: gnupg (Ubuntu) Importance: Undecided Status: New ** Changed in: gnupg (Ubuntu) Status: New => Confirmed ** Tags removed: precise ** Tags added: vivid ** Tags added: patch -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to gnupg in Ubuntu. https://bugs.launchpad.net/bugs/1403982 Title: mini.iso installer cannot load additional components Status in gnupg package in Ubuntu: Confirmed Status in update-manager package in Ubuntu: Confirmed Bug description: system: Ubuntu Vivid 32-bit current daily mini.iso Computer: http://www.toshiba.se/laptops/satellite-pro/c850/satellite- pro-c850-19w/ Dialogue: "Choose a mirror to use and press enter. If you have a http proxy type its details now, otherwise just press enter." The installer does not start loading additional components. Instead it complains: "Downloading a file failed" Retry Change mirror Cancel I have tried several national mirrors, and also 'archive.ubuntu.com' No mirror can provide that file, and the installation gets stuck here. Failing process: udpkg, net-retriever, or maybe missing files in the mirrors? There is nothing wrong with my internet connection: ping ubuntu.com works (from this Vivid alpha mini.iso) Ubuntu 14.04 LTS mini.iso works, can install systems The automatically attached files have nothing to do with the bug. They were created in another computer because I could not create the report in the simple system running in the beginning of the mini.iso installation process. So they were removed. ProblemType: Bug DistroRelease: Ubuntu mini.iso 15.04 version 20101020ubuntu356/ 16-Dec-2014 01:28 Architecture: i386 Date: Thu Dec 18 19:23:55 2014 MarkForUpload: True PackageArchitecture: all To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnupg/+bug/1403982/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp