Today, with no recent changes to my Trisquel 7 installation, Software Updater
hit a brick wall:
First: "Failed to Download Repository Information"
Upon further inquiry: "No Software Updates Are Available"
Then: "Your Software is Up to Date" which is a non sequitur, of course.
Playing with the source settings (US repository vs. main ...) has no effect.
Terminal also complains:
sudo apt-get update
[password]
Hit http://us.archive.trisquel.info belenos InRelease
Hit http://us.archive.trisquel.info belenos-security InRelease
Hit http://us.archive.trisquel.info belenos-updates InRelease
Hit http://us.archive.trisquel.info belenos/main Sources
Hit http://us.archive.trisquel.info belenos/main amd64 Packages
Hit http://us.archive.trisquel.info belenos/main i386 Packages
Hit http://archive.trisquel.info belenos-security InRelease
Ign http://ppa.launchpad.net trusty InRelease
Hit http://us.archive.trisquel.info belenos/main Translation-en
Hit http://us.archive.trisquel.info belenos-security/main Sources
Hit http://us.archive.trisquel.info belenos-updates/main Sources
Hit http://archive.trisquel.info belenos-security/main amd64 Packages
Hit http://us.archive.trisquel.info belenos-updates/main amd64 Packages
Ign http://ppa.launchpad.net trusty Release.gpg
Hit http://us.archive.trisquel.info belenos-updates/main i386 Packages
Hit http://archive.trisquel.info belenos-security/main i386 Packages
Ign http://ppa.launchpad.net trusty Release
Ign http://us.archive.trisquel.info belenos/main Translation-en_US
Ign http://us.archive.trisquel.info belenos-updates/main Translation-en_US
Ign http://us.archive.trisquel.info belenos-updates/main Translation-en
Ign http://archive.trisquel.info belenos-security/main Translation-en_US
Ign http://archive.trisquel.info belenos-security/main Translation-en
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 http://ppa.launchpad.net trusty/main Translation-en
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.
The only non-standard S/W I'm using is Komposer, but that's been on this
installation for many months and works fine.
