sudo apt-get update && sudo apt-get upgrade && sudo apt-get dist-upgrade
Ign http://archive.canonical.com trusty InRelease
Ign http://extras.ubuntu.com trusty InRelease
Hit http://extras.ubuntu.com trusty Release.gpg
Ign http://archive.canonical.com trusty InRelease
Ign http://archive.ubuntu.com trusty InRelease
Hit http://extras.ubuntu.com trusty Release
Get:1 http://archive.canonical.com trusty Release.gpg [933 B]
Get:2 http://archive.ubuntu.com trusty-updates InRelease [64.4 kB]
Get:3 http://dl.google.com stable InRelease [1,540 B]
63% [3 InRelease gpgv 1,540 B] [2 InRelease 39.7 kB/64.4 kB 62%] [Waiting for hSplitting up /var/lib/apt/lists/partial/dl.google.com_linux_chrome_deb_dists_stabIgn http://dl.google.com stable InRelease
E: GPG error: http://dl.google.com stable InRelease: Clearsigned file isn't valid, got 'NODATA' (does the network require authentication?)