Public bug reported:
It appears that when installing new versions of software, snapd fails to delete the dev-loops for older versions. With Ubuntu 18.04 running on an X-1 Carbon Thinkpad (5th Generation) with an SSD, my logins after the screen locked became slow. There would be a delay of maybe 10 to 15 seconds before the login would complete. So I updated to 19.10. Same story. Running "systemd-analyze blame," I saw a lot of time-using entries for "dev-loop[number]." Running "losetup-a," I was able to see that some of the loops pertained to obsolete versions of software, especially prior versions of gnome. After I used "losetup -d" to delete such loops, my logins are quick again. >From what I've read online, it seems that snapd fails to delete such old loops and this is what causes the delay. What I expected: My login would be practically instant. What happened: My login took 10 to 15 seconds. Steps to reproduce the behavior: The problem occurred consistently, with every login from the lockscreen. When I first installed 18.04 this did not occur. By the way, when I tried to report this issue using Apport ("ubuntu-bug snapd"), I received the message "The problem cannot be reported. This is not an official Ubuntu package." Architecture: AMD64 Desktop: Gnome DistroRelease: Ubuntu 19.10 InstallationDate: 2017-12-08 (762 days ago) InstallationMedia: Ubuntu 17.10 "Artful Aardvark" Release amd64 (20171018) ProcVersionSignature: Linux 5.3.0-24-generic 5.3.10 Tags: eoan wayland-session Uname: Linux 5.3.0-24-generic x86_64 Upgrade status: Upgraded to Eoan on 2019-12-19 (22 days ago) ** Affects: snapd (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1859160 Title: Snapd fails to delete obsolete dev-loops, thus causing delay at lockscreen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1859160/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs