*** This bug is a duplicate of bug 1579712 *** https://bugs.launchpad.net/bugs/1579712
can confirm that purging appstream and then rerunning apt update fixed the issue. version affected: appstream 0.9.4-1 @ #4 - Jacob I had the same problem, I fixed with the following: $ ps ax | grep appstream find what the applications' process id is usually about 5 numbers long # use sudo if not root $ kill -9 <Application Process ID> this should bring your cpu back to normal then: $ sudo apt purge appstream then clean up your system with: $ sudo apt autoremove if you canceled in the middle of the install and it's asking you to run 'sudo dpkg --configure -a' run the command but once it get stuck on appstream kill it as shown above. dpkg will still complete after you've killed appstream. then purge appstream. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to appstream in Ubuntu. https://bugs.launchpad.net/bugs/1583829 Title: aptitude update -> appstreamcli uses 100% cpu Status in appstream package in Ubuntu: Confirmed Bug description: I started aptitude and hit "u" to update package list. It stuck on "Loading cache" screen. I checked processes tree and found out aptitude was waiting for /usr/bin/appstreamcli which used 100% CPU and did nothing. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: appstream 0.9.4-1 Uname: Linux 4.6.0-040600-generic x86_64 ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 CurrentDesktop: Unity Date: Fri May 20 01:52:53 2016 EcryptfsInUse: Yes InstallationDate: Installed on 2016-05-01 (18 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) SourcePackage: appstream UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/appstream/+bug/1583829/+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