Ah, OK. Maybe the previous problem with the snap was because the old session monitor was still active? Odd.
But glad it worked now! So yeah, looks like the fixes in 42.3 work for your case, and it's possible the patches around encrypted & removable drives from 42.3 and 42.4 should be backported to Ubuntu 20.04. I believe this series of patches are sufficient: https://gitlab.gnome.org/World/deja-dup/-/commit/14a65235dc2466c0927579a80d760aa03d89371d https://gitlab.gnome.org/World/deja-dup/-/commit/6c6fe2c406ef0bbc4e9b1c8e08fdfe15912aed80 https://gitlab.gnome.org/World/deja-dup/-/commit/2778fc86258f1c5a2b229b64f3a28548ab9a5b01 https://gitlab.gnome.org/World/deja-dup/-/commit/92f0640dd45c443720e6f5f16db916891ad64f1b -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to deja-dup in Ubuntu. https://bugs.launchpad.net/bugs/1901340 Title: Backup doesn't automatically start when drive is inserted Status in deja-dup package in Ubuntu: Incomplete Bug description: I have Deja Dup set up to automatically backup onto a removable drive encrypted with LUKS every day. Each morning I would get a notification saying that the backup will automatically start when the drive is connected. When I insert the drive, it is automatically unlocked since I have the password saved on the computer. But after waiting for around half an hour the backup doesn't seem to have started. When I open Deja Dup it says that the last backup was yesterday and the next backup is today. Clicking the Back Up Now button starts the backup. The drive is GPT partitioned with a single partition containing ext4 inside LUKS. ProblemType: Bug DistroRelease: Ubuntu 20.10 Package: deja-dup 42.2-1ubuntu1 ProcVersionSignature: Ubuntu 5.8.0-25.26-generic 5.8.14 Uname: Linux 5.8.0-25-generic x86_64 ApportVersion: 2.20.11-0ubuntu50 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Sat Oct 24 11:09:42 2020 ExecutablePath: /usr/bin/deja-dup InstallationDate: Installed on 2020-10-20 (4 days ago) InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731) ProcEnviron: SHELL=/bin/bash XDG_RUNTIME_DIR=<set> PATH=(custom, user) LANG=en_US.UTF-8 SourcePackage: deja-dup UpgradeStatus: Upgraded to groovy on 2020-10-23 (1 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/deja-dup/+bug/1901340/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp