Ubuntu
update-manager package

  1. Bug #414181
  2. Comment #23

Comment 23 for bug 414181

Revision history for this message
Janne Snabb (snabb) wrote : Re: Update Manager, "install" button does nothing when u-m was opened by itself

In my case changing permissions helped:

sudo chmod 755 /var/cache/apt /var/cache/apt/archives /var/cache/apt/archives/partial

(Originally they were all 700 with owner as root.)