This bug was fixed in the package update-manager - 1:22.04.22
---------------
update-manager (1:22.04.22) jammy; urgency=medium
* Print warning message on failing to run updates end-point (LP: #2064211).
* When all packages are unselected, install button goes away; Fix it not
coming back after once a package is selected again (LP: #2068805).
* Switch to Debian source 3.0 (native)
-- Nathan Pratta Teodosio <nathan.teodo...@canonical.com> Thu, 11 Jul
2024 11:48:43 +0200
** Changed in: update-manager (Ubuntu Jammy)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/2068805
Title:
[SRU] "Install Now" button disappears for good if all packages
unselected and Ubuntu Pro packages are shown but unavailable
Status in update-manager package in Ubuntu:
Fix Released
Status in update-manager source package in Xenial:
Fix Released
Status in update-manager source package in Bionic:
Fix Released
Status in update-manager source package in Focal:
Fix Committed
Status in update-manager source package in Jammy:
Fix Released
Status in update-manager source package in Noble:
Fix Released
Status in update-manager source package in Oracular:
Fix Released
Bug description:
[Impact]
If one deselects all packages, the "Install Now" button disappears,
which makes sense (on another note it would make even more sense if it
was simply grayed out). However when one or more packages are then re-
selected, the button won't ever reappear, and update-manager must be
restarted in order to upgrade any packages.
[Test case]
For each affected $series:
* If 'apt list --upgradable' is empty, downgrade any one package in your
system.
* sudo ua detach --assume-yes
* sudo apt install hello
* update-manager
* Verify at least one update is available, and the hello package is
unavailable under the 'Ubuntu Pro security updates' section
* De-select all available packages
* Verify the 'install now' button disappears
* Select at least one available package
* Verify the 'install now' button is still absent
* Close the window
* Enable proposed (see https://wiki.ubuntu.com/Testing/EnableProposed)
* sudo apt install -t $series-proposed update-manager
* update-manager
* Verify at least one update is available, and the hello package is
unavailable under the 'Ubuntu Pro security updates' section
* De-select all available packages
* Verify the 'install now' button disappears
* Select at least one available package
* Verify the 'install now' button is now visible again
[Where things could go wrong]
Things could go wrong with the 'install now' button. It should be
visible when there is any available package selected and not visible
when there is none selected. So a regression could appear as the user
no longer being able install packages via this program, or being able
to click "install now" with no packages selected to be installed. In
any case, since this program is essentially a wrapper of Apt, all the
package management functionality, including upgrading, would still be
avaialable through Apt.
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