Wow, that's a fast correction: for my laptop, the bug appeared
yesterday, and was solved today! I am back to only one button "sleep"
(under the three "logout", "reboot" or "shutdown" - sorry if the labels
are not correct, these are raw translation of the French labels I get)
which works, instead of the two ("sleep" and "deep sleep") which froze
the laptop.
Cool, thanks for the help.
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Packages, which is subscribed to lightdm in Ubuntu.
https://bugs.launchpad.net/bugs/1605813
Title:
lock screen freezes while trying to wake from suspend
Status in lightdm package in Ubuntu:
Confirmed
Bug description:
Background:
I am running a fully updated 16.04.1 installation of Ubuntu using open
source nVidia drivers. When I press the power button on my PC to wake
the computer from suspend, the login screen appears and freezes. The
box around my username becomes somewhat opaque and no text box that
would allow me to enter my password appears. I have tried this many
times, and it always locks up in the same way.
Steps taken after issue occurs:
I have found, however, that the system is not completely locked up. I
can use CTL + ALT + F2 to switch to TTY2. From there I can login and
restart the computer without issue.
I also tried restarting lightdm via sudo service lightdm restart.
When I tried this and switched back to the GUI, the login screen was
loaded, and I could type my password. Once the login screen
disappeared, one of my monitors (dual-monitor setup) switched to my
user account's wallpaper, and then the system locked up. I had to
perform a hard restart.
Workaround:
I have found that using the proprietary 361.42 drivers provides a work
around for this issue. When using the proprietary drivers, the
computer resumes from suspend without issue.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: lightdm 1.18.2-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Jul 22 20:53:10 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2016-07-08 (14 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64
(20160420.1)
ProcEnviron:
LANGUAGE=en_US
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)
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