Não é possível atualizar o Ubuntu 10 a 12 devido a erros de fontes não autenticados

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Ao atualizar para o Ubuntu 12 a partir de 10, recebo estas mensagens de erro:

2015-10-31 13:36:32,746 ERROR Unauthenticated packages found: 'accountsservice apparmor apt apt-transport-https apt-utils apt-xapian-index aptitude base-files bash bash-completion bind9 bind9-doc bind9-host bind9utils binutils bsdutils build-essential busybox-initramfs busybox-static ca-certificates cifs-utils consolekit coreutils cpio cron curl dbus dbus-x11 dconf-gsettings-backend dconf-service dhcp3-client dhcp3-common dmidecode dmsetup dnsutils dosfstools dpkg dpkg-dev e2fslibs e2fsprogs ecryptfs-utils file fontconfig fontconfig-config fuse fuse-utils gamin ghostscript glib-networking glib-networking-common glib-networking-services gnome-keyring gnupg gnupg-curl gpgv grub-common gvfs gvfs-backends gvfs-common gvfs-daemons gvfs-libs hdparm ifupdown initramfs-tools initramfs-tools-bin initscripts iproute iptables isc-dhcp-client isc-dhcp-common krb5-locales language-selector-common libaccountsservice0 libappindicator3-1 libapt-inst1.4 libapt-pkg4.12 libarchive12 libart-2.0-2 libasn1-8-heimdal libasound2 libaudiofile1 libavahi-client3 libavahi-common-data libavahi-common3 libavahi-glib1 libbind9-80 libblkid1 libbluetooth3 libbonobo2-0 libbonobo2-common libbonoboui2-0 libbonoboui2-common libc-bin libc-dev-bin libc6 libc6-dev libcairo-gobject2 libcairo2 libck-connector0 libcomerr2 libcups2 libcupsimage2 libcurl3 libcurl3-gnutls libdbus-1-3 libdbus-glib-1-2 libdbusmenu-glib4 libdbusmenu-gtk3-4 libdconf0 libdevmapper-event1.02.1 libdevmapper1.02.1 libdns81 libdpkg-perl libdrm-intel1 libdrm-nouveau1a libdrm-radeon1 libdrm2 libecryptfs0 libelf1 libevent-2.0-5 libexif12 libexpat1 libfontconfig1 libfreetype6 libfuse2 libgail18 libgamin0 libgc1c2 libgck-1-0 libgcr-3-1 libgcr-3-common libgcrypt11 libgdk-pixbuf2.0-0 libgdk-pixbuf2.0-common libgl1-mesa-dri libgl1-mesa-glx libglade2-0 libglapi-mesa libglib2.0-0 libgnome2-0 libgnome2-bin libgnome2-common libgnomecanvas2-0 libgnomecanvas2-common libgnomevfs2-0 libgnomevfs2-common libgnutls26 libgphoto2-2 libgphoto2-l10n libgphoto2-port0 libgs9 libgs9-common libgssapi-krb5-2 libgssapi3-heimdal libgssglue1 libgtk-3-0 libgtk-3-bin libgtk-3-common libgtk2.0-0 libgtk2.0-common libgudev-1.0-0 libhcrypto4-heimdal libheimbase1-heimdal libheimntlm0-heimdal libhx509-5-heimdal libisc83 libisccc80 libisccfg82 libjasper1 libjpeg-turbo8 libjpeg62 libk5crypto3 libkrb5-26-heimdal libkrb5-3 libkrb53 libkrb5support0 liblcms2-2 libldap-2.4-2 liblockfile-bin liblockfile1 liblua5.1-0 liblvm2app2.2 liblwres80 liblzo2-2 libmagic1 libmount1 libnih-dbus1 libnih1 libnspr4 libnss3 libnss3-1d liborbit2 libpam-gnome-keyring libpango1.0-0 libparted0debian1 libpci3 libpciaccess0 libpcre3 libperl5.14 libpixman-1-0 libplymouth2 libpolkit-agent-1-0 libpolkit-backend-1-0 libpolkit-gobject-1-0 libproxy1 libpython2.7 libroken18-heimdal libruby1.8 libsasl2-2 libsasl2-modules libsmbclient libsqlite3-0 libss2 libssl0.9.8 libssl1.0.0 libtasn1-3 libtiff4 libudev0 libusbmuxd1 libuuid1 libwbclient0 libwind0-heimdal libx11-6 libx11-data libx11-xcb1 libxcb-glx0 libxcb-render0 libxcb-shape0 libxcb-shm0 libxcb1 libxcursor1 libxext6 libxfixes3 libxi6 libxinerama1 libxml-libxml-perl libxml-sax-perl libxml2 libxrandr2 libxrender1 libxt6 libxtst6 libxv1 libxxf86dga1 libxxf86vm1 linux-firmware linux-headers-3.2.0-92 linux-headers-3.2.0-92-generic linux-headers-server linux-image-3.2.0-92-generic linux-image-server linux-libc-dev linux-server login lsb-base lsb-release lvm2 make man-db mime-support mktemp mount mountall mtools multiarch-support ntfs-3g ntfsprogs ntp ntpdate openssh-client openssh-server openssl parted passwd patch pciutils perl perl-base perl-modules plymouth plymouth-theme-ubuntu-text policykit-1 policykit-1-gnome ppp procps psmisc python python-apt python-apt-common python-central python-gi python-gobject python-minimal python2.7 python2.7-minimal quota resolvconf rsyslog samba-common samba-common-bin shared-mime-info smbclient smbfs sqlite3 sudo sysv-rc sysvinit-utils tcpdump tzdata ubuntu-keyring ubuntu-minimal ubuntu-standard udev udisks unzip update-manager-core upstart usbmuxd util-linux util-linux-locales uuid-runtime vim-common vim-gnome vim-gui-common vim-runtime vim-tiny w3m wget wpasupplicant x11-common x11-utils xkb-data'

Alguns sugeriram alterar o arquivo unauth.cfg para AllowUnauthenticated = yes. Mas alguns foram strongmente contra isso, pois pode quebrar o nosso servidor de e-mail.

Um sources.list errado pode afetar isso? Posso ter o arquivo sources.list de um Ubuntu 10 funcionando como referência?

    
por wong boon hong 27.10.2016 / 10:42

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