Je ne peux pas mettre mon système à niveau à cause de paquets cassés. Cela fait plusieurs mois que je ne parviens pas à résoudre ce problème, et franchement, je suis sur le point de faire une réinstallation complète d'ubuntu. Ce message représente mon dernier espoir de trouver une solution. Voici ce que j'ai essayé :
Infos sur la version
$ uname -a && gcc --version
Linux prometheus 3.13.0-87-generic #132-Ubuntu SMP Mon May 16 20:51:42 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
gcc (Ubuntu 4.8.4-2ubuntu1~14.04.3) 4.8.4
...Liste des sources
$ grep -v "^#" /etc/apt/sources.list /ect/apt/sources.list.d/*
deb http://za.archive.ubuntu.com/ubuntu/ trusty main universe multiverse
deb-src http://za.archive.ubuntu.com/ubuntu/ trusty main universe multiverse #Added by software-properties
deb http://za.archive.ubuntu.com/ubuntu/ trusty-updates main universe multiverse
deb-src http://za.archive.ubuntu.com/ubuntu/ trusty-updates main universe multiverse #Added by software-properties
deb http://za.archive.ubuntu.com/ubuntu/ trusty-security main universe multiverse
deb-src http://za.archive.ubuntu.com/ubuntu/ trusty-security main universe multiverse #Added by software-properties
deb http://za.archive.ubuntu.com/ubuntu/ trusty-backports main universe multiverse
deb-src http://za.archive.ubuntu.com/ubuntu/ trusty-backports main universe multiverse #Added by software-properties
deb http://archive.canonical.com/ trusty partner
deb-src http://archive.canonical.com/ trusty partner
deb-src http://archive.canonical.com/ubuntu trusty partnerapt-get stuff
$ sudo apt-get update
...Aucun problème...
$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages have been kept back:
gcc-4.9-base libgcc1
0 upgraded, 0 newly installed, 0 to remove and 2 not upgraded.Il semble donc que je me sois retrouvé avec plusieurs versions de gcc d'une manière ou d'une autre ! Celle qui est maintenue par le gestionnaire de paquets est une version plus récente.
la vérification du tableau des versions révèle
$ apt-cache policy gcc-4.9-base libgcc1
gcc-4.9-base:
Installed: 4.9.2-0ubuntu1~12.04
Candidate: 4.9.3-0ubuntu4
Version table:
4.9.3-0ubuntu4 0
500 http://za.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
*** 4.9.2-0ubuntu1~12.04 0
100 /var/lib/dpkg/status
4.9-20140406-0ubuntu1 0
500 http://za.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
libgcc1:
Installed: 1:4.9.2-0ubuntu1~12.04
Candidate: 1:4.9.3-0ubuntu4
Version table:
1:4.9.3-0ubuntu4 0
500 http://za.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
*** 1:4.9.2-0ubuntu1~12.04 0
100 /var/lib/dpkg/status
1:4.9-20140406-0ubuntu1 0
500 http://za.archive.ubuntu.com/ubuntu/ trusty/main amd64 PackagesIl semblerait que j'ai été trop pressé en installant gcc 4.9 alors que j'étais encore sur precise, et que je me suis retrouvé dans cet étrange état confus. Rétrospectivement, c'était peut-être une mauvaise idée. J'ai essayé de mettre à jour gcc via synaptic, mais il veut inévitablement supprimer une liste follement longue de paquets (y compris apt), ce qui semble très indésirable.
Ma question est donc la suivante : y a-t-il un espoir de récupérer le système et de résoudre les problèmes de dépendance ?
Mise à jour
$ sudo apt-get install --reinstall gcc-4.9-base libgcc1
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
gvfs : Depends: gvfs-daemons (>= 1.20.3-0ubuntu1.2)
Depends: gvfs-daemons (< 1.20.3-0ubuntu1.2.1~)
indicator-network : Depends: unity8 (>= 7.82) but it is not going to be installed
libegl1-mesa : Depends: libgbm1 (>= 7.11~1) but it is not going to be installed
Recommends: libegl1-mesa-drivers
libgl1-mesa-glx : Depends: libglapi-mesa (= 10.1.3-0ubuntu0.6)
Recommends: libgl1-mesa-dri (>= 7.2)
libqt5gui5 : Depends: libgbm1 (>= 8.1~0) but it is not going to be installed
libstdc++6 : Depends: gcc-4.9-base (= 4.9.2-0ubuntu1~12.04) but 4.9.3-0ubuntu4 is to be installed
libubuntu-application-api-mirserver1 : Depends: libmirserver18 (>= 0.1.8+14.04.20140408.1) but it is not going to be installed
libunity-mir1 : Depends: libmirserver18 (>= 0.1.8+14.04.20140411) but it is not going to be installed
unity-scope-mediascanner2 : Depends: mediascanner2.0 but it is not going to be installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.J'ai également essayé cette solution, sans succès :
sudo apt-get -o Debug::pkgProblemResolver=yes dist-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Starting pkgProblemResolver with broken count: 7
Starting 2 pkgProblemResolver with broken count: 7
Investigating (0) libstdc++6 [ amd64 ] < 4.9.2-0ubuntu1~12.04 > ( libs )
Broken libstdc++6:amd64 Depends on gcc-4.9-base [ amd64 ] < 4.9.2-0ubuntu1~12.04 -> 4.9.3-0ubuntu4 > ( libs ) (= 4.9.2-0ubuntu1~12.04)
Considering gcc-4.9-base:amd64 17 as a solution to libstdc++6:amd64 525
Added gcc-4.9-base:amd64 to the remove list
Fixing libstdc++6:amd64 via keep of gcc-4.9-base:amd64
Investigating (0) libgcc1 [ amd64 ] < 1:4.9.2-0ubuntu1~12.04 -> 1:4.9.3-0ubuntu4 > ( libs )
Broken libgcc1:amd64 Depends on gcc-4.9-base [ amd64 ] < 4.9.2-0ubuntu1~12.04 -> 4.9.3-0ubuntu4 > ( libs ) (= 4.9.3-0ubuntu4)
Considering gcc-4.9-base:amd64 17 as a solution to libgcc1:amd64 463
Holding Back libgcc1:amd64 rather than change gcc-4.9-base:amd64
Try to Re-Instate (0) gcc-4.9-base:amd64
Try to Re-Instate (1) libgcc1:amd64
Done
Done
Starting pkgProblemResolver with broken count: 0
Starting 2 pkgProblemResolver with broken count: 0
Done
The following packages have been kept back:
gcc-4.9-base libgcc1
0 upgraded, 0 newly installed, 0 to remove and 2 not upgraded.Avant d'essayer de forcer la réinstallation, je pourrais essayer de revenir à gcc-4.8 et ensuite réessayer la mise à jour...
