X does not start (nvidia-340 / optimus / ASUS K53SV)

[Ian Turner]

Beginning with nvidia-340 340.96-0ubuntu3, X does not start on my Asus K53SV (optimus) laptop. Removing the package allows X to start with the Intel driver.

Actual symptom is that the X virtual terminal displays a non-blinking cursor and nothing else. X log file attached.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: nvidia-340 (not installed)
ProcVersionSignature: Ubuntu 4.4.0-18.34-generic 4.4.6
Uname: Linux 4.4.0-18-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CurrentDesktop: KDE
Date: Sat Apr 16 13:31:42 2016
InstallationDate: Installed on 2012-10-07 (1287 days ago)
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120822.4)
JournalErrors:
 Error: command ['journalctl', '-b', '--priority=warning', '--lines=1000'] failed with exit code 1: Hint: You are currently not seeing messages from other users and the system.
       Users in the 'systemd-journal' group can see all messages. Pass -q to
       turn off this notice.
 No journal files were opened due to insufficient permissions.
SourcePackage: nvidia-graphics-drivers-340
UpgradeStatus: Upgraded to xenial on 2016-04-09 (6 days ago)

[Rohan Verma (rhnvrm)]

I also am facing the same issue and also boot to tty1. I'd be happy to provide any further information to help solve this.

P.S. If it is of any use, this also happened when I tried installing nvidia drivers on a new Fedora 23 installation.