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I just upgraded to 15.10 from 14.04, and I cannot login now. I am brought to a command screen asking me to login. Trying startx doesn't work. I tried recovery mode and got the following error spammed:

intel ips 0000:00:1f.6: failed to disable graphics turbo

How should I proceed in attempting to resolve this issue. Any help would be appreciated and thanks in advance.

David
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James Splinter
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1 Answers1

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Check whether you have some conflicting xserver-xorg-video-intel-lts-* packages installed. 

dpkg -l xserver-xorg-video-inte* | grep '^ii'

I would apt- get purge all installed xserver-xorg-video-intel packages, and then try 

sudo apt-get install --reinstall ubuntu-desktop

That should reinstall the newest version of the missing (purged) xserver-xorg-video-intel package

minimec
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