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einpoklum
Asked: 2016-09-18 07:28:26 +0800 CST

Intel graphics drivers APT repository using weak SHA-1 diget [duplicate]

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I have an /etc/apt/sources.list.d file with the line

deb https://download.01.org/gfx/ubuntu/16.04/main wily main #Intel Graphics drivers

Now, when I try to apt-get upgrade, I get a message saying:

W: GPG error: https://download.01.org/gfx/ubuntu/16.04/main wily InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 2CC2A1B90A3B3268

Why is the repository not signed? What can I do about it?

apt

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