I get a flicker of a screen on boot and then no graphics.
Error in dmesg | grep fb
fb: conflicting fb hw usage inteldrmfb vs EFI VGA – removing generic driver
To get graphics ctrl+alt+F1 and login. Then run “sudo service gdm restart” and I have a full X session. Login as my user and things work well until I reboot again.
I’m having a tough time understanding the fix for this, but I have found some references that state setting the resolution in /etc/default/grub might fix things.
I found a GUI to fix this, “apt-get install startupmanager” and changed the resolution from 640×480 to 800×600 under both the boot options and the advanced tab.
Reboot and I get a GUI that works.
Online home of Jon 
Thank you for this post, you saved my life 🙂
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Genius – solved!I too got “conflicting fb hw usage inteldrmfb vs EFI VGA – removing generic drive”and out of all the Linux gurus on the net this is the only one that explains a simple solution in plain English.Big thanks!
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This was very helpful. I'm a Linux Newbie and found your solution to be very simple and easy. Thanks very much for your post!
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A simple fix for what was driving me mad
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