I'm using an Ubuntu OEM image on the Dell Precision 5510. After unboxing and applying all updates (running apt-get update/upgrade multiple times), if I suspend the system, when it comes back (or also after failing to suspend), lightdm does not show a password field, and selecting my username does not bring up a password field. If I click on the gear in the upper right corner, I can choose to switch accounts; doing that, after several seconds, lightdm comes back, and I can unlock the user session.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: lightdm 1.10.6-0ubuntu1
ProcVersionSignature: Ubuntu 3.19.0-33.38~14.04.1-generic 3.19.8-ckt7
Uname: Linux 3.19.0-33-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Feb 26 11:53:36 2016
DistributionChannelDescriptor:
# This is a distribution channel descriptor
# For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
canonical-oem-somerville-trusty-amd64-osp1-20150721-1
InstallationDate: Installed on 2016-02-25 (1 days ago)
InstallationMedia: Ubuntu 14.04 "Trusty" - Build amd64 LIVE Binary 20150721-23:28
LightdmConfig:
[SeatDefaults]
autologin-guest=false
autologin-user-timeout=0
autologin-session=lightdm-autologin
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)
I can't reproduce on a system with the FHD panel. It may be restricted to the UHD model.