Public bug reported:
Started the graphical upgrade to wily; packages downloaded and apt
started to install. After a while, the UI froze (no redraw). in /var/log
/dist-upgrade/apt-term.log, the following is displayed:
=====
[...]
Neue Version der Konfigurationsdatei /etc/init.d/mountnfs-bootclean.sh wird
installiert ...
Neue Version der Konfigurationsdatei /etc/init.d/mountdevsubfs.sh wird
installiert ...
Neue Version der Konfigurationsdatei /etc/init.d/mountkernfs.sh wird
installiert ...
Konfigurationsdatei »/etc/init.d/ondemand«
==> Geändert (von Ihnen oder von einem Skript) seit der Installation.
==> Paketverteiler hat eine aktualisierte Version herausgegeben.
Wie möchten Sie vorgehen? Ihre Wahlmöglichkeiten sind:
Y oder I : Die Version des Paket-Betreuers installieren
N oder O : Die momentan installierte Version beibehalten
D : Die Unterschiede zwischen den Versionen anzeigen
Z : Eine Shell starten, um die Situation zu begutachten
Der Standardweg ist das Beibehalten der momentanen Version.
*** ondemand (Y/I/N/O/D/Z) [Vorgabe=N] ?
=====
Normally, an interactive dialogue is supposed to open, but no such thing
happened.
pstree excerpt:
├─wily(4352)───dpkg(17611)
strace shows dpkg hanging on reading from stdin:
# strace -p 17611
Process 17611 attached
read(0, ^CProcess 17611 detached
<detached ...>
#
Writing "I\n" to /proc/17611/fd did appear in the log, but didn't help
(dpkg still stuck). Had to kill it and continue the upgrade on foot.
ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: ubuntu-release-upgrader-core 1:15.04.14.3
ProcVersionSignature: Ubuntu 3.19.0-49.55-generic 3.19.8-ckt12
Uname: Linux 3.19.0-49-generic x86_64
NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
ApportVersion: 2.17.2-0ubuntu1.8
Architecture: amd64
CrashDB: ubuntu
Date: Sat Feb 20 12:18:42 2016
InstallationDate: Installed on 2012-01-03 (1508 days ago)
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
Symptom: dist-upgrade
UpgradeStatus: Upgraded to wily on 2016-02-20 (0 days ago)
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug dist-upgrade third-party-packages wily
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https://bugs.launchpad.net/bugs/1547837
Title:
release upgrade to wily freezes on dpkg's first configuration file
question
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