I'm using ubuntu 14.04, and yesterday, I made a complete backup of my system using Deja-Dup, backing up everything on /.

When I attempted to restore the backup, Ubuntu froze while Deja-Dup was restoring the file /lib/modules/3.19.0-25-generic/updates/dkms/nvidia_352.ko.

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Then I made a new backup, excluding /lib/modules directory, and tried to restore this new backup. Same thing happened, but while restoring a different file, this time it was /lib/firmware/ti-connectivity/wl128x-fw-5-sr.bin.

enter image description here

Need your help with identifying what causes this behavior, and how to avoid it. Also, I want to know which directories (beside /home) should be backed up, and whether /lib is one of them.


You're trying to restore system files to their original location meaning that they may overwrite files that are currently in use by the kernel. Don't do that! Either

  • restore your files to a different location than the root directory (/),

  • restore them from a different system (e. g. a live DVD/USB) onto the root file system of the target drive, or

  • restore only the files from the back-up that you need.

  • As you're a reputation 1 user: if this answers your question, don't forget to click the grey ☑ under the "0" at the left of this text to accept it, which means "yes, this answer is valid"! – David Foerster Jul 6 '16 at 19:02

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