I am running Ubuntu 14.10 server
I'm getting this icon in the notification bar over the last days, even though Software Center is running updates properly and I have no new updates available.
I have run sudo apt-get update && sudo apt-get upgrade
and still have this problem.
The output after running sudo apt-get update
is:
W: Failed to fetch cdrom://Ubuntu-Server 14.10 _Utopic Unicorn_ - Release i386 (20141022.2)/dists/utopic/main/binary-i386/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
W: Failed to fetch cdrom://Ubuntu-Server 14.10 _Utopic Unicorn_ - Release i386 (20141022.2)/dists/utopic/restricted/binary-i386/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
E: Some index files failed to download. They have been ignored, or old ones used instead.
How can I fix this issue?