当我在终端中输入“sudo apt update”时收到以下消息：
W: GPG error: http://ddebs.ubuntu.com focal Release: The following signatures were invalid: EXPKEYSIG C8CAB6595FDFF622 Ubuntu Debug Symbol Archive Automatic Signing Key (2016) <[email protected]>
E: The repository 'http://ddebs.ubuntu.com focal Release' 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://ddebs.ubuntu.com focal-updates Release: The following signatures were invalid: EXPKEYSIG C8CAB6595FDFF622 Ubuntu Debug Symbol Archive Automatic Signing Key (2016) <[email protected]>
E: The repository 'http://ddebs.ubuntu.com focal-updates Release' 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.
答案1
看来您忘记为 ddeb 存储库添加 GPG 密钥。
打开终端并输入：
sudo apt install --reinstall ubuntu-dbgsym-keyring
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys F2EDC64DC5AEE1F6B9C621F0C8CAB6595FDFF622
sudo apt-get update