Public bug reported:
I'm upgrading an Ubuntu 14.04 LTS system to 14.10 over ssh with 'sudo
do-release-upgrade'.
When it asks me if I want to continue doing this over SSH, the text ends
with a blank line. If I press Enter at this point, only then I get to
see the prompt, which was
Continue? [yN]
but by then it's too late and I already chose "no".
The same thing happens if I restart, go past this prompt (without seeing
it), then ask for details about package removals/upgrades/installs. I
get a list of packages in a pager. When I quit (by pressing q) I should
once more see the prompt asking me if it's okay and if I should proceed,
or cancel, or see the details again. But the prompt isn't there and
doesn't appear until after I input my answer.
I think there's a missing sys.stdout.flush() call somewhere in do-
release-upgrade.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.6
ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8
Uname: Linux 3.13.0-39-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
CrashDB: ubuntu
Date: Wed Feb 4 08:16:03 2015
InstallationDate: Installed on 2012-11-02 (823 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2015-02-04 (0 days ago)
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug dist-upgrade trusty
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https://bugs.launchpad.net/bugs/1417880
Title:
Invisible prompts in do-release-upgrade
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