Password required twice returning from suspend

[Kev Bowring]

Clean install - no updates available.

Suspend machine and restart.

Lock screen requiring password - enter password and return to suspended desktop.

Within a few seconds machine locks and password is required once more.

Appears to depend on how fast I enter the password the first time.

Using the same hardware I've installed nvidia 340.96 and tried to reproduce the issue without success.

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: light-locker 1.7.0-2ubuntu1
ProcVersionSignature: Ubuntu 4.8.0-21.23-generic 4.8.0
Uname: Linux 4.8.0-21-generic x86_64
ApportVersion: 2.20.3-0ubuntu7
Architecture: amd64
CurrentDesktop: XFCE
Date: Sun Oct 9 09:15:38 2016
InstallationDate: Installed on 2016-10-09 (0 days ago)
InstallationMedia: Xubuntu 16.10 "Yakkety Yak" - Alpha amd64 (20161008)
SourcePackage: light-locker
UpgradeStatus: No upgrade log present (probably fresh install)

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1631715

[Kev Bowring (flocculant)]

reported against nouveau at bug 1631964

[Kev Bowring (flocculant)]

Noted that if I wait a few seconds at login password dialogue I don't get the double password requirement.

[tuxayo (tuxayo)]

If it can't, I have the same bug on Arch Linux (precisely Antergos XFCE).

It happens with both the gtk and webkit2 greeters.

[tuxayo (tuxayo)]

Maybe it's related to bug 1284918 https://bugs.launchpad.net/ubuntu/+source/xubuntu-default-settings/+bug/1284918

I solved it on Arch Linux by going in Light Locker Settings → Automatically lock the session → Never.
It's still locked because Xfce Power Manager has a redundant setting (in Security), maybe this is the cause in my case.

[Theo Linkspfeifer (lastonestanding)]

If you are still affected by this bug, please obtain a debug log:

killall light-locker; light-locker --debug

[Theo Linkspfeifer (lastonestanding)]

Thanks. I am not quite sure yet how to interpret the log.

I suggest attaching a log for the second test case also (comment #4).

[Jarno Suni (jarnos)]

Does it work better, if you turn off automatic locking on suspend via power manager settings and run 'xflock4 && xfce4-session-logout --suspend' in terminal, instead?

[Theo Linkspfeifer (lastonestanding)]

Link to the lightdm log from another report:
https://bugs.launchpad.net/lightdm/+bug/1666803/+attachment/4824102/+files/lightdm.log

[Theo Linkspfeifer (lastonestanding)]

Debian report: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=911511

[Stephen (1012web)]

I'm seeing this issue for the first time in Ubuntu 19.10 (eoan).

Both the screensaver and the power manager have preferences for locking. I see this issue when both are enabled.

Under: Screensaver Preferences -> Lock Screen, I see:
Enable Lock Screen: Y/N
Lock Screen with Screensaver: Y/N
  Lock the screen after the screensaver is active for ___ minutes
Lock Screen with System Sleep: Y/N

Under: Xfce Power Manager -> Security, I see:
Light Locker:
  Automatically lock the session: Never/When screensaver is activated/When screensaver is deactivated
  Delay locking after screensaver for [1 to 61] minutes
  [Check] Lock screen when system is going to sleep

If I disable everything in one of those two places, I don't get the double locking.

[Jarno Suni (jarnos)]

Stephen, do you use xfce4-screensaver? Is the other lock screen from light-locker. You do not have to use both. Check your autostarts. Purging light-locker changes power manager settings UI, but there is still checkbox for locking.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.