I'm running Ubuntu 14.04 LTS, and I have an HD 4600 integrated graphics chip.

lspci | grep VGA



00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06)

Intel just released the new version of their Graphics driver for Ubuntu 14.04.
https://01.org/linuxgraphics/downloads/2014/intelr-graphics-installer-1.0.5-linux

When I try to install it, I get stuck at:

Finished : E:GPG error: http://download.01.org trusty InRelease: Clearsigned file isn't valid, got 'NODATA' (does the network require authentication?)  [  ] ◦

main-window.c/on_transaction_finished: Package transaction finished with an error

And it prevents sudo apt-get update from completing. I get the same error as before.

I went to Software & Updates and under Other Software tab I removed the bad repository: http://download.01.org/gfx/ubuntu/14.04/main, and then I could update my repositories. But I cannot install the Intel Graphics Driver!

I hope I'm making sense. This is the first day this is available, so I'm counting on Intel to fix this soon, if not, I hope someone can help find a work around.