j'ai couru
Sudo add-apt-repository ppa:gezakovacs/ppa
et obtenez le résultat suivant avec les 4 dernières lignes donnant des erreurs: -
gpg: keyring `/tmp/tmp8k7uho4o/secring.gpg' created
gpg: keyring `/tmp/tmp8k7uho4o/pubring.gpg' created
gpg: requesting key FC91AE7E from hkp server keyserver.ubuntu.com
gpg: /tmp/tmp8k7uho4o/trustdb.gpg: trustdb created
gpg: key FC91AE7E: public key "Launchpad PPA for Geza Kovacs" imported
gpg: Total number processed: 1
gpg: imported: 1 (RSA: 1)
gpg: keyblock resource `/etc/apt/trusted.gpg.d/gezakovacs_ubuntu_ppa.gpg': file open error
gpg: no writable keyring found: eof
gpg: error reading `/tmp/tmp8k7uho4o/pubring.gpg': general error
gpg: import from `/tmp/tmp8k7uho4o/pubring.gpg' failed: general error
Un grand merci pour toute aide
Ajout de sorties d'écran à la demande
$ Sudo apt update
[Sudo] password for kerry:
Get:1 http://ppa.launchpad.net/gezakovacs/ppa/ubuntu xenial InRelease [17.5 kB]
Get:2 http://security.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
Err:1 http://ppa.launchpad.net/gezakovacs/ppa/ubuntu xenial InRelease
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY D45DF2E8FC91AE7E
Err:2 http://security.ubuntu.com/ubuntu xenial-security InRelease
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
Reading package lists... Done
W: GPG error: http://ppa.launchpad.net/gezakovacs/ppa/ubuntu xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY D45DF2E8FC91AE7E
E: The repository 'http://ppa.launchpad.net/gezakovacs/ppa/ubuntu xenial InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://security.ubuntu.com/ubuntu xenial-security InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
E: The repository 'http://security.ubuntu.com/ubuntu xenial-security InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
Pour David Foerster: -
$ apt-key list
/etc/apt/trusted.gpg
--------------------
pub 1024D/7FAC5991 2007-03-08
uid Google, Inc. Linux Package Signing Key <[email protected]>
sub 2048g/C07CB649 2007-03-08
pub 4096R/D38B4796 2016-04-12
uid Google Inc. (Linux Packages Signing Authority) <[email protected]>
sub 4096R/640DB551 2016-04-12 [expires: 2019-04-12]
et
ls -l /etc/apt/trusted.gpg*
-rw-r--r-- 1 root root 4171 Jan 15 07:13 /etc/apt/trusted.gpg
-rw-r--r-- 1 root root 1203 Jan 15 07:13 /etc/apt/trusted.gpg~
et
awk '$2=="/"' /proc/mounts
/dev/mapper/ubuntu--vg-root / ext4 rw,relatime,errors=remount-ro,data=ordered 0 0
si vous voulez juste graver l'image facilement sur le lecteur USB.
Vous pouvez utiliser etcher comme alternative unetbootin
j'aime ça pour une interface simple
mkusb peut le faire pour vous
Voir le lien suivant
https://help.ubuntu.com/community/mkusb
Installez à partir du référentiel unstable, si vous voulez la version la plus récente