i know that there are have been some answers on this issue. But i have already tried some of them and without success.
I don't know why but every time when i turn my laptop on i got this message.
Last way that i have tried here.
What i am doing wrong?
output of sudo apt-get update
aleksey@aleksey:~$ sudo apt-get update
[sudo] password for aleksey:
Ign http://il.archive.ubuntu.com trusty InRelease
Hit http://il.archive.ubuntu.com trusty-updates InRelease
Hit http://il.archive.ubuntu.com trusty-backports InRelease
Hit http://il.archive.ubuntu.com trusty Release.gpg
Ign http://dl.google.com stable InRelease
Hit http://il.archive.ubuntu.com trusty-updates/main Sources
Hit http://il.archive.ubuntu.com trusty-updates/restricted Sources
Hit http://il.archive.ubuntu.com trusty-updates/universe Sources
Hit http://ppa.launchpad.net trusty InRelease
Hit http://il.archive.ubuntu.com trusty-updates/multiverse Sources
Hit http://il.archive.ubuntu.com trusty-updates/main amd64 Packages
Ign http://dl.google.com stable InRelease
Hit http://il.archive.ubuntu.com trusty-updates/restricted amd64 Packages
Ign http://ppa.launchpad.net trusty InRelease
Hit http://il.archive.ubuntu.com trusty-updates/universe amd64 Packages
Hit http://il.archive.ubuntu.com trusty-updates/multiverse amd64 Packages
Hit http://security.ubuntu.com trusty-security InRelease
Hit http://il.archive.ubuntu.com trusty-updates/main i386 Packages
Ign http://archive.canonical.com trusty InRelease
Ign http://extras.ubuntu.com trusty InRelease
Ign http://downloads-distro.mongodb.org dist InRelease
Hit http://dl.google.com stable Release.gpg
Ign http://ppa.launchpad.net trusty InRelease
Hit http://il.archive.ubuntu.com trusty-updates/restricted i386 Packages
Hit http://il.archive.ubuntu.com trusty-updates/universe i386 Packages
Hit http://il.archive.ubuntu.com trusty-updates/multiverse i386 Packages
Hit http://ppa.launchpad.net trusty InRelease
Hit http://dl.google.com stable Release.gpg
Hit http://il.archive.ubuntu.com trusty-updates/main Translation-en
Hit http://il.archive.ubuntu.com trusty-updates/multiverse Translation-en
Hit http://security.ubuntu.com trusty-security/main Sources
Hit http://extras.ubuntu.com trusty Release.gpg
Hit http://archive.canonical.com trusty Release.gpg
Hit http://ppa.launchpad.net trusty InRelease
Hit http://dl.google.com stable Release
Hit http://il.archive.ubuntu.com trusty-updates/restricted Translation-en
Hit http://ppa.launchpad.net trusty InRelease
Hit http://il.archive.ubuntu.com trusty-updates/universe Translation-en
Hit http://il.archive.ubuntu.com trusty-backports/main Sources
Hit http://security.ubuntu.com trusty-security/restricted Sources
Hit http://extras.ubuntu.com trusty Release
Hit http://archive.canonical.com trusty Release
Hit http://il.archive.ubuntu.com trusty-backports/restricted Sources
Get:1 http://downloads-distro.mongodb.org dist Release.gpg [490 B]
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://il.archive.ubuntu.com trusty-backports/universe Sources
Hit http://il.archive.ubuntu.com trusty-backports/multiverse Sources
Hit http://il.archive.ubuntu.com trusty-backports/main amd64 Packages
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://il.archive.ubuntu.com trusty-backports/restricted amd64 Packages
Hit http://security.ubuntu.com trusty-security/universe Sources
Hit http://il.archive.ubuntu.com trusty-backports/universe amd64 Packages
Hit http://extras.ubuntu.com trusty/main Sources
Hit http://archive.canonical.com trusty/partner Sources
Hit http://il.archive.ubuntu.com trusty-backports/multiverse amd64 Packages
Hit http://il.archive.ubuntu.com trusty-backports/main i386 Packages
Hit http://il.archive.ubuntu.com trusty-backports/restricted i386 Packages
Hit http://ppa.launchpad.net trusty/main Translation-en
Hit http://il.archive.ubuntu.com trusty-backports/universe i386 Packages
Hit http://il.archive.ubuntu.com trusty-backports/multiverse i386 Packages
Hit http://security.ubuntu.com trusty-security/multiverse Sources
Hit http://il.archive.ubuntu.com trusty-backports/main Translation-en
Get:2 http://ppa.launchpad.net trusty Release.gpg [316 B]
Hit http://extras.ubuntu.com trusty/main amd64 Packages
Hit http://archive.canonical.com trusty/partner amd64 Packages
Hit http://downloads-distro.mongodb.org dist Release
Ign http://downloads-distro.mongodb.org dist Release
Hit http://il.archive.ubuntu.com trusty-backports/multiverse Translation-en
Ign http://ppa.launchpad.net trusty Release.gpg
Hit http://il.archive.ubuntu.com trusty-backports/restricted Translation-en
Hit http://security.ubuntu.com trusty-security/main amd64 Packages
Hit http://extras.ubuntu.com trusty/main i386 Packages
Hit http://archive.canonical.com trusty/partner i386 Packages
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://il.archive.ubuntu.com trusty-backports/universe Translation-en
Hit http://il.archive.ubuntu.com trusty Release
Hit http://il.archive.ubuntu.com trusty/main Sources
Hit http://il.archive.ubuntu.com trusty/restricted Sources
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://il.archive.ubuntu.com trusty/universe Sources
Hit http://il.archive.ubuntu.com trusty/multiverse Sources
Hit http://il.archive.ubuntu.com trusty/main amd64 Packages
Hit http://security.ubuntu.com trusty-security/restricted amd64 Packages
Hit http://il.archive.ubuntu.com trusty/restricted amd64 Packages
Hit http://archive.canonical.com trusty/partner Translation-en
Hit http://ppa.launchpad.net trusty/main Translation-en
Hit http://il.archive.ubuntu.com trusty/universe amd64 Packages
Hit http://il.archive.ubuntu.com trusty/multiverse amd64 Packages
Hit http://il.archive.ubuntu.com trusty/main i386 Packages
Ign http://downloads-distro.mongodb.org dist/10gen amd64 Packages/DiffIndex
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://il.archive.ubuntu.com trusty/restricted i386 Packages
Hit http://il.archive.ubuntu.com trusty/universe i386 Packages
Hit http://security.ubuntu.com trusty-security/universe amd64 Packages
Hit http://il.archive.ubuntu.com trusty/multiverse i386 Packages
Hit http://il.archive.ubuntu.com trusty/main Translation-en
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://il.archive.ubuntu.com trusty/main Translation-ru
Hit http://ppa.launchpad.net trusty/main Translation-en
Hit http://il.archive.ubuntu.com trusty/multiverse Translation-en
Hit http://security.ubuntu.com trusty-security/multiverse amd64 Packages
Hit http://il.archive.ubuntu.com trusty/multiverse Translation-ru
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Ign http://downloads-distro.mongodb.org dist/10gen i386 Packages/DiffIndex
Hit http://il.archive.ubuntu.com trusty/restricted Translation-en
Hit https://deb.nodesource.com trusty InRelease
Hit http://security.ubuntu.com trusty-security/main i386 Packages
Hit http://il.archive.ubuntu.com trusty/restricted Translation-ru
Hit http://il.archive.ubuntu.com trusty/universe Translation-en
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://il.archive.ubuntu.com trusty/universe Translation-ru
Hit http://dl.google.com stable Release
Hit http://security.ubuntu.com trusty-security/restricted i386 Packages
Hit http://ppa.launchpad.net trusty/main Translation-en
Hit http://dl.google.com stable/main amd64 Packages
Hit https://deb.nodesource.com trusty/main Sources
Hit http://ppa.launchpad.net trusty Release
Ign http://ppa.launchpad.net trusty Release
Hit http://security.ubuntu.com trusty-security/universe i386 Packages
Hit http://dl.google.com stable/main i386 Packages
Ign http://ppa.launchpad.net trusty Release
Hit https://deb.nodesource.com trusty/main amd64 Packages
Ign http://ppa.launchpad.net trusty/main amd64 Packages/DiffIndex
Hit http://security.ubuntu.com trusty-security/multiverse i386 Packages
Ign http://ppa.launchpad.net trusty/main i386 Packages/DiffIndex
Hit http://security.ubuntu.com trusty-security/main Translation-en
Hit https://deb.nodesource.com trusty/main i386 Packages
Hit http://dl.google.com stable/main amd64 Packages
Ign http://il.archive.ubuntu.com trusty/main Translation-en_US
Ign http://il.archive.ubuntu.com trusty/multiverse Translation-en_US
Hit http://ppa.launchpad.net trusty/main Translation-en
Ign http://il.archive.ubuntu.com trusty/restricted Translation-en_US
Hit http://security.ubuntu.com trusty-security/multiverse Translation-en
Ign http://il.archive.ubuntu.com trusty/universe Translation-en_US
Get:3 https://deb.nodesource.com trusty/main Translation-en_US
Hit http://security.ubuntu.com trusty-security/restricted Translation-en
Hit http://security.ubuntu.com trusty-security/universe Translation-en
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Ign http://extras.ubuntu.com trusty/main Translation-en_US
Hit http://ppa.launchpad.net trusty/main i386 Packages
Ign http://extras.ubuntu.com trusty/main Translation-en
Ign http://dl.google.com stable/main Translation-en_US
Ign http://dl.google.com stable/main Translation-en
Ign http://extras.ubuntu.com trusty/main Translation-ru
Ign http://dl.google.com stable/main Translation-ru
Ign http://ppa.launchpad.net trusty/main Translation-en_US
Ign http://ppa.launchpad.net trusty/main Translation-ru
Ign https://deb.nodesource.com trusty/main Translation-en_US
Err http://ppa.launchpad.net trusty/main amd64 Packages
404 Not Found
Err http://ppa.launchpad.net trusty/main i386 Packages
404 Not Found
Ign http://ppa.launchpad.net trusty/main Translation-en_US
Ign https://deb.nodesource.com trusty/main Translation-en
Ign http://ppa.launchpad.net trusty/main Translation-en
Ign http://ppa.launchpad.net trusty/main Translation-ru
Ign https://deb.nodesource.com trusty/main Translation-ru
Hit http://downloads-distro.mongodb.org dist/10gen amd64 Packages
Hit http://downloads-distro.mongodb.org dist/10gen i386 Packages
Ign http://downloads-distro.mongodb.org dist/10gen Translation-en_US
Ign http://downloads-distro.mongodb.org dist/10gen Translation-en
Ign http://downloads-distro.mongodb.org dist/10gen Translation-ru
Fetched 806 B in 9s (84 B/s)
W: GPG error: http://downloads-distro.mongodb.org dist Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 9ECBEC467F0CEB10
W: GPG error: http://ppa.launchpad.net trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 0F678A01569113AE
W: Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/Release Unable to find expected entry 'main/binary-i386/Packages' in Release file (Wrong sources.list entry or malformed file)
W: Failed to fetch http://ppa.launchpad.net/langdalepl/gvfs-mtp/ubuntu/dists/trusty/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/langdalepl/gvfs-mtp/ubuntu/dists/trusty/main/binary-i386/Packages 404 Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.
aleksey@aleksey:~$
output of sudo apt-get upgrade
aleksey@aleksey:~$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages were automatically installed and are no longer required:
calligra-l10n-ru kde-l10n-engb kde-l10n-he kde-l10n-ru
linux-image-3.19.0-25-generic linux-image-extra-3.19.0-25-generic
Use 'apt-get autoremove' to remove them.
The following packages will be upgraded:
coreutils google-chrome-stable initramfs-tools initramfs-tools-bin libtiff5
libtiff5:i386 mongodb-org mongodb-org-mongos mongodb-org-server
mongodb-org-shell mongodb-org-tools nodejs openjdk-7-jdk openjdk-7-jre
openjdk-7-jre-headless
15 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 230 MB of archives.
After this operation, 858 kB of additional disk space will be used.
Do you want to continue? [Y/n]
WARNING: The following packages cannot be authenticated!
mongodb-org-shell mongodb-org-server mongodb-org-mongos mongodb-org- tools
mongodb-org
Install these packages without verification? [y/N]
E: Some packages could not be authenticated
aleksey@aleksey:~$
sudo apt-get updateandsudo apt-get upgrade. – muru Mar 26 '16 at 12:27apt-get updateouput. You'll see two GPG errors aboutNO_PUBKEY, an error about Google Chrome's repos, and two 404 errors about a PPA. Three different sets of errors, three different solutions. See the linked posts. – muru Mar 26 '16 at 15:22