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After a "normal" system update, my computer gets stuck in a flickering black screen. I made a Live Recovery CD and followed the "update failure" steps found in https://help.ubuntu.com/community/LiveCdRecovery

After apt-update I get "error while moving old database out of the way. Appstream cache update failed".

How can I restore broken files?

apt update output:

Err:1 ppa.launchpad.net/inkscape.dev/stable/ubuntu xenial InRelease Could not resolve 'ppa.launchpad.net'
Err:2 dl.google.com/linux/talkplugin/deb stable In Release Could not resolve 'dl.google.com'
Err:3 security.ubuntu.com/ubuntu xenial-security In Release Could not solve 'security.ubuntu.com'
Err:4 archive.ubuntu.com/ubuntu xenial In Release Could not resolve 'archive.ubuntu.com'
Err:5 archive.ubuntu.com/ubuntu xenial-updates In Release Could not resolve 'archive.ubuntu.com'
David Foerster
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Gohsts in my machine
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  • Comments are not for extended discussion; the entire conversation that was taking place here has been [moved to chat](http://chat.stackexchange.com/rooms/48563/discussion-on-question-by-ghosts-in-my-machine-cant-restore-files-from-live-rec). – Thomas Ward Nov 15 '16 at 20:11
  • @DavidFoerster that solved the DNS issue, hoever my computer still wont boot after – Gohsts in my machine Nov 19 '16 at 17:22
  • Could you please open a [new question](/questions/ask) if you have a new or follow-up question? It's easier to deal with one issue at a time than to lump them all together. Thanks. – David Foerster Nov 19 '16 at 17:35

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