Public bug reported:
I installed nvidia-prime to try it, but later decided to stick to
bumblebee. I removed (apt-get remove nvidia-prime). On the next reboot,
lightdm failed to start: I was dropped to a blank screen with no error
messages.
On investigating, I found this line in lightdm.log:
[+1.18s] DEBUG: Launching process 1486: /sbin/prime-switch
[+1.18s] CRITICAL: g_setenv: assertion 'value != NULL' failed
[+1.18s] CRITICAL: g_setenv: assertion 'value != NULL' failed
[+1.18s] WARNING: Error executing child process /sbin/prime-switch: No such
file or directory
I did "apt-get remove --purge nvidia-prime", and things worked fine next
reboot. Attaching complete lightdm.log.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: nvidia-prime (not installed)
ProcVersionSignature: Ubuntu 3.13.0-14.34-generic 3.13.5
Uname: Linux 3.13.0-14-generic x86_64
ApportVersion: 2.13.2-0ubuntu5
Architecture: amd64
CurrentDesktop: KDE
Date: Mon Mar 3 19:56:54 2014
InstallationDate: Installed on 2014-01-24 (38 days ago)
InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140121.1)
SourcePackage: nvidia-prime
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: nvidia-prime (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug trusty
** Attachment added: "lightdm.log.old"
https://bugs.launchpad.net/bugs/1287507/+attachment/4006075/+files/lightdm.log.old
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https://bugs.launchpad.net/bugs/1287507
Title:
LightDM fails to start after removing nvidia-prime
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