0

After updating my system as usual from the terminal it goes on fetching updates but at last it shows the following messages. What does it mean and how do I fix the red icon. Actually to fix the red icon I updated but it isn't fixed. The message:

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 1DB8ADC1CFCA9579
W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/trusty-updates/main/i18n/Translation-en  Hash Sum mismatch
E: Some index files failed to download. They have been ignored, or old ones used instead.

And also I could not update recommended Updates, every time I hit Install off course after authentication a message pops up. How do I fix this annoying message. I want to run my system with anomaly(s). Who wouldn't? Required installtion of untrusted packages

muru
  • 207,228
user279506
  • 133

1 Answers1

0

Type the following commands in a Terminal -

sudo apt-get clean

sudo rm /var/lib/apt/lists/*

sudo apt-get update

This will remove your lists and fetch a new copy of it.

Otherwise, as suggested by @edwardtorvalds, try to import all the missing gpg keys.

Community
  • 1
Rohith Madhavan
  • 8,377