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I'm trying to use Intel Graphics Installer, but i get the following error:

E:GPG error: http://ppa.launchpad.net trusty InRelease: Clearsigned file isn't valid, got 'NODATA' (does the network require authentication?)

I've searched through the internet, but none of the answers i found helped me to solve this issue.

Also, using the command 

sudo apt-get update

I get a similar error at the end, sometimes accusing different ppa's. What should i do?

muru
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ebernardes
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1 Answers1

0

I've experienced this at one point or another.

This is generally a network issue.

Are you:

  • Behind/Forced to use a proxy?
  • Have a spotty internet connection?
  • Etc...

You should check your network. If that doesn't solve your issue(s), you may need to contact your ISP.