I've been having the same problems while running apt-get update, including 'hash sum mismatch' and 'BADSIG' errors. I tried the following:
1. Downloading updated keys sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys <KEY_NAME> sudo apt-get update 2. Clean cache then update (some report success with repeated cycles of this) sudo apt-get clean sudo apt-get update 3. Clear out the list files completely, or just the partials sudo rm -f /var/lib/apt/lists/* sudo rm -f /var/lib/apt/lists/partials/* sudo apt-get update 4. Clear out the status file as it may be corrupted sudo rm /var/lib/dpkg/status sudo touch /var/lib/dpkg/status sudo apt-get update 5. Disable proxy to ensure direct download from the mirror sudo apt-get -o Acquire::http::No-Cache=true -o Acquire::BrokenProxy=true -o Acquire::http::Pipeline-Depth=0 update 6. Try changing to another mirror in "Software & Updates" I tried the following: * ubuntu.ctu.edu.vn (Vietnam - failed - my original mirror) * ubuntu.01link.hk (Hong Kong - failed) * archive.ubuntu.com (Main - failed) * mirror.switch.ch (Switzerland - failed) * mirror-fpt-telecom.fpt.net (Vietnam - success - a mirror hosted by my current ISP) TL;DR Only changing the mirror was able to solve this problem for me. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1373598 Title: apt-get update fails, hash sum mismatches with de.archive.ubuntu.com To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1373598/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
