"ReleaseNotesViewer" does not display anything with the text view

This bug was fixed in the package ubuntu-release-upgrader - 1:21.10.2

---------------
ubuntu-release-upgrader (1:21.10.2) impish; urgency=medium

  * DistUpgradeFetcherCore.py: when upgrading with the text view display the
    release announcement in the terminal. (LP: #1925529)
  * tests/test_dist_upgrade_fetcher_core.py: do not display the release
    announcement during the test.
  * Run pre-build.sh: updating mirrors, demotions, and translations.

 -- Brian Murray <email address hidden> Fri, 21 May 2021 15:43:16 -0700

Hello Brian, or anyone else affected,

Accepted ubuntu-release-upgrader into hirsute-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/ubuntu-release-upgrader/1:21.04.12 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-hirsute to verification-done-hirsute. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-hirsute. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

All autopkgtests for the newly accepted ubuntu-release-upgrader (1:21.04.12) for hirsute have finished running.
The following regressions have been reported in tests triggered by the package:

ubuntu-release-upgrader/1:21.04.12 (armhf, s390x, arm64, ppc64el)
update-manager/1:21.04.10 (armhf, s390x, amd64, arm64, ppc64el)

Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-migration/hirsute/update_excuses.html#ubuntu-release-upgrader

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

Because Impish doesn't appear in meta-release-development yet I had to get a little creative by editing the URI for the meta-release file e.g.:

 $ head /etc/update-manager/meta-release
# default location for the meta-release file

[METARELEASE]
#URI = https://changelogs.ubuntu.com/meta-release
URI = https://bazaar.launchpad.net/~ubuntu-core-dev/meta-release/ubuntu/download/269/meta-release
URI_LTS = https://changelogs.ubuntu.com/meta-release-lts
URI_UNSTABLE_POSTFIX = -development
URI_PROPOSED_POSTFIX = -proposed

Revision 269 had impish in m-r-d. After doing that I was able to verify that the ReleaseAnnouncement is displayed with the version of ubuntu-release-upgrader from -proposed. See the attached screenshot for evidence!

This bug was fixed in the package ubuntu-release-upgrader - 1:21.04.12

---------------
ubuntu-release-upgrader (1:21.04.12) hirsute; urgency=medium

  * DistUpgrade/DevelReleaseAnnouncement: remove warning regarding upgrading
    to hirsute.
  * DistUpgradeQuirks.py: add in a method for reading the system vendor out of
    DMI information which then can be used to block upgrades. (LP: #1929449)
  * DistUpgradeQuirks.py: If the system vendor is Apple do not allow release
    upgrades to 21.04 for the time being. (LP: #1929449)
  * DistUpgradeFetcherCore.py: when upgrading with the text view display the
    release announcement in the terminal. (LP: #1925529)
  * tests/test_dist_upgrade_fetcher_core.py: do not display the release
    announcement during the test.
  * tests/test_sources_list.py: switch from precise to focal and precise was
    removed from the archive.
  * Run pre-build.sh: updating mirrors, demotions, and translations.

 -- Brian Murray <email address hidden> Tue, 11 May 2021 15:03:04 -0700

The verification of the Stable Release Update for ubuntu-release-upgrader has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.