Thank you for taking the time to report this bug and contributing to Ubuntu. I wasn't aware of the problem described in https://askubuntu.com/questions/1528949/time-setting-problems-with- ubuntu-24-04. So thanks for opening this bug report.
I wrote an entry how to change the time zone using the command line: https://discourse.ubuntu.com/t/how-to-change-the-time-zone-in-ubuntu- using-the-command-line/35307 /etc/localtime is a symlink pointing to the time zone file. /etc/timezone is a legacy file that contains the time zone. Most applications will look for /etc/localtime instead of /etc/timezone. Is /etc/localtime pointing to /usr/share/zoneinfo/America/Toronto on your system? Canada/Eastern is a legacy name and has been replaced by America/Toronto. To still use Canada/Eastern you would need to install tzdata-legacy. You wrote that the TZ variable contains "Canada/Eastern". Who sets this variable? -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to tzdata in Ubuntu. https://bugs.launchpad.net/bugs/2092236 Title: 24.04.1 tzdata wrong time zone, cannot reset, downgrade Status in tzdata package in Ubuntu: New Bug description: See https://askubuntu.com/questions/1528949/time-setting-problems- with-ubuntu-24-04 I upgraded two laptops from 22.04 to 24.04.1 and both resulted in an inability to set the time zone correctly using the GUI settings. The notification bar showed the time in UTC, not EST, at the top centre. My `/etc/timezone` contains `America/Toronto`, which should cause dates to display as EST (which they did before the upgrade to 24.04.1). I would select and save `America/Toronto UTC-05:00` in the GUI and then the GUI would display `UTC (Toronto, Canada)`. Toronto is EST, not UTC. The output of the `date` command was always in UTC, and the time zone was listed as the bogus `Canada` time zone instead of the correct EST: $ echo $TZ Canada/Eastern $ date Thu Dec 19 18:50:46 Canada 2024 The output of `timedatectl` was correct, showing the correct EST time zone: $ timedatectl Local time: Thu 2024-12-19 14:26:09 EST Universal time: Thu 2024-12-19 19:26:09 UTC RTC time: Thu 2024-12-19 19:26:09 Time zone: America/Toronto (EST, -0500) System clock synchronized: yes NTP service: active RTC in local TZ: no Downgrading from 2024 to `tzdata_2022a-0ubuntu1_all.deb` fixed the problem on both machines; the time is correct and the `date` command shows the time zone is now EST: # date Thu Dec 19 19:37:35 Canada 2024 # dpkg -i /tmp/tzdata_2022a-0ubuntu1_all.deb dpkg: warning: downgrading tzdata from 2024a-3ubuntu1.1 to 2022a-0ubuntu1 (Reading database ... 217864 files and directories currently installed.) Preparing to unpack .../tzdata_2022a-0ubuntu1_all.deb ... Unpacking tzdata (2022a-0ubuntu1) over (2024a-3ubuntu1.1) ... Setting up tzdata (2022a-0ubuntu1) ... Current default time zone: 'America/Toronto' Local time is now: Thu Dec 19 14:37:52 EST 2024. Universal Time is now: Thu Dec 19 19:37:52 UTC 2024. Run 'dpkg-reconfigure tzdata' if you wish to change it. # date Thu Dec 19 14:37:53 EST 2024 ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: tzdata 2022a-0ubuntu1 ProcVersionSignature: Ubuntu 6.8.0-51.52-generic 6.8.12 Uname: Linux 6.8.0-51-generic x86_64 ApportVersion: 2.28.1-0ubuntu3.3 Architecture: amd64 CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Thu Dec 19 14:08:18 2024 InstallationDate: Installed on 2020-09-08 (1563 days ago) InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731) PackageArchitecture: all SourcePackage: tzdata UpgradeStatus: Upgraded to noble on 2024-11-28 (22 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/tzdata/+bug/2092236/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp