错误:4 downloads.plex.tv/repo/deb public InRelease 由于公钥不可用,无法验证以下签名:

错误:4 downloads.plex.tv/repo/deb public InRelease 由于公钥不可用,无法验证以下签名:

我的电脑上安装了 Kubuntu 18.04.01。我是一名计算机技术人员,但对 Linux 的了解极其有限。一切都运行正常,但我无法再更新系统。

sudo命令在终端中不起作用,软件中心无法更新。我输入了正确的密码,但系统无法更新。软件中心确实成功找到了要更新的软件包。我收到了来自软件中心的错误消息,但它是浅灰色背景和深灰色文本。我无法在它关闭之前阅读它。

以下是root登录失败后终端显示的文本。

sudo apt-get update
[sudo] password for glen: 
Hit:1 repo.steampowered.com/steam precise InRelease
Hit:2 us.archive.ubuntu.com/ubuntu bionic InRelease                                                                
Get:3 security.ubuntu.com/ubuntu bionic-security InRelease [83.2 kB]                                               
Get:4 downloads.plex.tv/repo/deb public InRelease [3,408 B]                                                       
Ign:5 dl.google.com/linux/chrome/deb stable InRelease                                                              
Hit:6 us.archive.ubuntu.com/ubuntu bionic-updates InRelease                                         
Hit:7 us.archive.ubuntu.com/ubuntu bionic-backports InRelease                                      
Hit:8 dl.google.com/linux/chrome/deb stable Release                                                
Err:4 downloads.plex.tv/repo/deb public InRelease                           
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 97203C7B3ADCA79D
Reading package lists... Done
W: GPG error: downloads.plex.tv/repo/deb public InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 97203C7B3ADCA79D
E: The repository 'downloads.plex.tv/repo/deb public 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.

答案1

您的密码没有问题,一切正常。您的plex.tv存储库有问题。

尝试删除该 PPA,例如通过取消选中它软件源软件和更新。如有需要,您可以尝试再次添加。

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