apt-get 更新后英特尔图形 ppa 错误

Question

我怎么能忽略这条消息？

W: GPG error: https://download.01.org/gfx/ubuntu/16.04/main xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 56A3DEF863961D39
W: The repository 'https://download.01.org/gfx/ubuntu/16.04/main xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.

它来自英特尔更新 gfx。

Answer 1

我设法通过运行以下命令为 Ubuntu 16.04 和 16.10 解决了这个问题

wget --no-check-certificate https://download.01.org/gfx/RPM-GPG-GROUP-KEY-ilg -O - | sudo apt-key add -
wget --no-check-certificate https://download.01.org/gfx/RPM-GPG-KEY-ilg -O - | sudo apt-key add -
wget --no-check-certificate https://download.01.org/gfx/RPM-GPG-KEY-ilg-2 -O - | sudo apt-key add -
wget --no-check-certificate https://download.01.org/gfx/RPM-GPG-KEY-ilg-3 -O - | sudo apt-key add -
wget --no-check-certificate https://download.01.org/gfx/RPM-GPG-KEY-ilg-4 -O - | sudo apt-key add -

Answer 2

尝试添加密钥（替换56A3DEF863961D39为您丢失的密钥）：

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 56A3DEF863961D39
sudo apt-get update

参考资料和进一步阅读：

• GPG 错误：无法验证以下签名，因为公钥不可用
• 如何修复 GPG 错误“NO_PUBKEY”？
• apt sources.list 中的文件扩展名无效