I am trying to upgrade from version 12.10 to 13.04 and when i open my software updater it tells me to Failed to download repository information. Check your Internet connection. . So I closed it, opened up Firefox. My Internet is working just fine. I even rebooted and tried again a couple of times. It still says to Check Your Internet Connection. I also trued disconnecting and reconnecting my Internet, rebooting the modem. Still nothing. Any advice?
When I click Details, the following shows up:
W:GPG error: http://security.ubuntu.com quantal-security Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <[email protected]>, W:Failed to fetch cdrom://Ubuntu 12.04.1 LTS _Precise Pangolin_ - Release i386 (20120817.3)/dists/precise/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 12.04.1 LTS _Precise Pangolin_ - Release i386 (20120817.3)/dists/precise/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
.