Comment 0 for bug 1544726

The first invoking of `optirun bash` always makes `lightdm` crash (effect is the same as invoking `sudo systemctl restart lightdm.service` from another `tty`), all further invokations show

    [ 235.554092] [ERROR]Cannot access secondary GPU - error: [XORG] (EE) NOUVEAU(0): [drm] failed to set drm interface version.
    [ 235.554195] [ERROR]Aborting because fallback start is disabled.

`bumblebee` is configured to use the `nouveau` driver.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: bumblebee 3.2.1-9
Uname: Linux 4.4.1-040401-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Feb 11 20:01:52 2016
InstallationDate: Installed on 2013-10-17 (847 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
SourcePackage: bumblebee
UpgradeStatus: Upgraded to wily on 2015-11-19 (84 days ago)
mtime.conffile..etc.bumblebee.bumblebee.conf: 2016-02-08T23:28:48.532707
mtime.conffile..etc.bumblebee.xorg.conf.nouveau: 2016-02-08T23:16:11.143164
mtime.conffile..etc.bumblebee.xorg.conf.nvidia: 2015-12-01T16:55:32.376129