[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2019-01-18 Thread Krzysztof Ostaszewski
@c4pp4

How can I apply the patch? Or should I wait for it to be upstream and
available via apt upgrade? I am on Ubuntu 18.04 and 18.10 with same
multi-user problem.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2019-01-16 Thread c4pp4
@Khurshid Alam

I have tested it with multiple users without problem. I have tweaked it
little bit.

** Patch added: 
"0001-Fix-authentication-failure-when-switching-user-sessi.patch"
   
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1733557/+attachment/5229745/+files/0001-Fix-authentication-failure-when-switching-user-sessi.patch

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2019-01-16 Thread c4pp4
** Patch removed: "authentication.patch"
   
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1733557/+attachment/5229051/+files/authentication.patch

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2019-01-16 Thread Khurshid Alam
@@c4pp4

Please test if it works with multiple users. If it does it's better to
attach a git patch with proper header.

commit your local changes using

git commit -a -m ""

then generate a patch using

git format-patch -s -n -1 HEAD

Then you will have a 0001-*.patch in root project dir.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2019-01-15 Thread Roland
Same issue, sometimes, with Ubuntu 18.10
switching user isn working
workarround is to switch to another console (ctr-alt-F1) after loggin in get my 
session back
if it occours, itś every time the screen locks also with the lock-screen button

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2019-01-14 Thread Ubuntu Foundations Team Bug Bot
The attachment "authentication.patch" seems to be a patch.  If it isn't,
please remove the "patch" flag from the attachment, remove the "patch"
tag, and if you are a member of the ~ubuntu-reviewers, unsubscribe the
team.

[This is an automated message performed by a Launchpad user owned by
~brian-murray, for any issues please contact him.]

** Tags added: patch

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2019-01-14 Thread c4pp4
@Rael Gugelmin Cunha

My knowledge is not PAM friendly but I think it's something like this -
when the screen is locked, PAM transaction is started via pam_start and
after authentication (entered a password) it's closed via pam_end. But
if we switch user from the locked screen, PAM transaction is not
terminated via pam_end and pam_handle_ is still presented. When we
return into the session and lock the screen again, the following code
will cause the issue:

unity/lockscreen/UserAuthenticatorPam.cpp

if (pam_handle_)
  {
LOG_ERROR(logger) << "Unable to start authentication because another one 
has already been started";
return false;
  }

It will try 5 times to authenticate but it always returns false as
pam_handle_ is still present, then the following code shows
"Authentication failure" with "Switch to greeter" button:

unity/lockscreen/UserPromptView.cpp

if (num_retry_auth_ <= 5)
  {
LOG_WARNING(logger) << "Failed to start the authentication process. 
Retrying for " << num_retry_auth_ << " time.";
source_manager_.AddTimeout(100, [this] {
  StartAuthentication();
  return false;
});
  }
  else
  {
AddMessage(_("Authentication failure"), nux::color::Red);
AddButton(_("Switch to greeter…"), [this] {
  session_manager_->SwitchToGreeter();
});

My solution is to terminate the PAM transaction and let it try to init the new 
one. I have tested it in my case and it works without problem.
I wonder why there is the case of error - "Unable to start authentication 
because another one has already been started". I don't know what case it's 
related to.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2019-01-14 Thread Rael Gugelmin Cunha
@c4pp4 is the attached patch file a solution?

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2019-01-14 Thread c4pp4
Single user desktop - steps to reproduce:
1) restart computer or log out user
2) log into user session from LightDM
3) use the gear icon menu to lock the screen
4) use the gear icon menu to switch the account
5) now we are switched into LightDM
6) log into user session again
7) use the gear icon menu to lock the screen
8) Authentication failure - Switch to greeter

** Patch added: "authentication.patch"
   
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1733557/+attachment/5229051/+files/authentication.patch

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-12-24 Thread gadflysu
Same issue on Ubuntu 18.04 LTS using Unity / lgihtdm / Compiz.
Every time I lock the screen, I have to "switch to greeter" as it shows.
So...Any solution to fix this now?
I'm not sure if the information below would help.

➜  ~ tail /var/log/auth.log

Dec 25 14:54:05 gadflysu-ubuntu lightdm: pam_unix(lightdm-greeter:session): 
session opened for user lightdm by (uid=0)
Dec 25 14:54:05 gadflysu-ubuntu systemd: pam_unix(systemd-user:session): 
session opened for user lightdm by (uid=0)
Dec 25 14:54:05 gadflysu-ubuntu systemd-logind[973]: New session c7 of user 
lightdm.
Dec 25 14:54:06 gadflysu-ubuntu lightdm: PAM unable to dlopen(pam_kwallet.so): 
/lib/security/pam_kwallet.so: cannot open shared object file: No such file or 
directory
Dec 25 14:54:06 gadflysu-ubuntu lightdm: PAM adding faulty module: 
pam_kwallet.so
Dec 25 14:54:06 gadflysu-ubuntu lightdm: PAM unable to dlopen(pam_kwallet5.so): 
/lib/security/pam_kwallet5.so: cannot open shared object file: No such file or 
directory
Dec 25 14:54:06 gadflysu-ubuntu lightdm: PAM adding faulty module: 
pam_kwallet5.so
Dec 25 14:54:06 gadflysu-ubuntu lightdm: pam_succeed_if(lightdm:auth): 
requirement "user ingroup nopasswdlogin" not met by user "gadflysu"
Dec 25 14:54:41 gadflysu-ubuntu systemd-logind[973]: Removed session c7.
Dec 25 14:54:41 gadflysu-ubuntu systemd: pam_unix(systemd-user:session): 
session closed for user lightdm

➜  ~ lightdm --show-config

   [Seat:*]
A  allow-guest=false
C  greeter-wrapper=/usr/lib/lightdm/lightdm-greeter-session
D  guest-wrapper=/usr/lib/lightdm/lightdm-guest-session
G  user-session=unity
F  greeter-session=unity-greeter
H  xserver-command=X -core
I  type=xlocal
I  display-setup-script=/sbin/prime-offload
I  display-stopped-script=/sbin/prime-switch

   [LightDM]
B  backup-logs=false

Sources:
A  /usr/share/lightdm/lightdm.conf.d/50-disable-guest.conf
B  /usr/share/lightdm/lightdm.conf.d/50-disable-log-backup.conf
C  /usr/share/lightdm/lightdm.conf.d/50-greeter-wrapper.conf
D  /usr/share/lightdm/lightdm.conf.d/50-guest-wrapper.conf
E  /usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf
F  /usr/share/lightdm/lightdm.conf.d/50-unity-greeter.conf
G  /usr/share/lightdm/lightdm.conf.d/50-unity.conf
H  /usr/share/lightdm/lightdm.conf.d/50-xserver-command.conf
I  /usr/share/lightdm/lightdm.conf.d/90-nvidia.conf

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-11-08 Thread Tobias
I also experience the same problem on a fresh Ubuntu 16.04.5 LTS
install. Fresh meaning: installed 6 days ago, in the meantime had to do
'sudo apt install --reinstall ubuntu-desktop'. Since then, I'm having
this issue every time I lock my screen.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-09-13 Thread pommm
I 've got this bug after "apt-get dist-upgrade" on my system too.

System before bug:
Ubuntu 16.04.1 LTS
Kernel 4.4.0-45-generic #66-Ubuntu SMP 

After upgrade:
Ubuntu 16.04.5 LTS
Kernel 4.4.0-131-generic #157-Ubuntu SMP

User A logged in
User A lock screen
User B logged in
User B logged out
User A try to login. 

Message: 
Authentication failure
Swith to Greeter

If click Swith to Greeter it witll allow you to login and then it is
back.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-09-08 Thread Ahmad
** Also affects: unity
   Importance: Undecided
   Status: New

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-09-07 Thread Shlomo Bachar
This bug happens to me also. I had this problem in my laptop during a
few months. But it disappeared after a while. Now it suddenly appeared
on my desktop. 16.04 LTS. I dont have other users in my computers as
others mentioned. It happened after a few weeks of a fresh Ubuntu
installation. Annoying but not serious. It happens after returning from
screen lock or restart. Disappears after doing "ESC".

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-08-25 Thread Rael Gugelmin Cunha
@angela: I tested and it doesn't work. It had the same effect as restart
or restart unity/compiz plugin: it'll work only until log with second
user and suspend, then error is back.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-08-25 Thread angela
I solved it with this:

https://medium.com/@5XvYrLT7/fix-ubuntus-switch-to-greeter-bug-
715d05520f46

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-08-23 Thread Rick Harris
In reply to #105

Have tested reverting that fix and it just re-introduces the bug
"After locking screen there is no input field to type password for unlock"

Having no input field is worse.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-08-11 Thread Michael Engelbrecht
Hi. I also have this problem on my DELL Optiplex AIO 9010 running Ubuntu 
16.04.5 LTS.
 
And "Yes I know that 16.04 is no longer supported" ... however it seems that if 
you upgrade to 18.04, it does not solve the problem and in fact makes it worse 
!! At the moment, I get this message after my desktop has been sleeping, click 
on it and the usual login prompt appears whereas with 18.04 it seems that we 
cannot switch to the login screen without pressing CTRL-ALT-F1.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-08-07 Thread Rael Gugelmin Cunha
I think this is the related diff:
https://code.launchpad.net/~azzar1/unity/fix-missing-entry-
lockscreen/+merge/330801/+preview-diff/804854/+files/preview.diff

If someone can test reverting those changes...

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-08-07 Thread Szilárd Páll
As many others, after a recent update, whenever on return to any of the
three machines I have with up-to-date 16.04.5, I am met with the
"Authentication failure message" and am forced to switch to the greeter
which on some boxes (e.g. my workstation with multiple NVIDIA GPUs)
takes >5 sec.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-08-03 Thread Rael Gugelmin Cunha
Recompile the greeter schemas made nothing here: after the second user
login/logout, the first one will continue to see the message.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-07-26 Thread inactivist
Recompiling the greeter schemas as mentioned in #89[1] worked for me
(Ubuntu 16.04 x64) -- haven't seen the failure in weeks, was seeing it
every day or so before.  I have no idea why it works, but so far so
good.  Wish I had time to dig deeper.


$ sudo glib-compile-schemas /usr/share/glib-2.0/schemas


[1]https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1733557/comments/89
worked for me.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-07-26 Thread Rael Gugelmin Cunha
God, this bug is so annoying... I faced it several times in a day!

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-07-23 Thread Rael Gugelmin Cunha
Usually after click to switch to greeter and got able to login, if I
restart compiz (compiz --replace &), this will stop.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-07-20 Thread Erik Meitner
I upgraded from 16.04 to 18.04. Same problem with the exception that I
can't switch to the login screen from the lock screen by hitting a key.
I need to press CTRL-ALT-F1 to get to the login screen. Then I can log
in to get back to my session.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-07-16 Thread Peter Smith
FWIW this has been happening to me for some time.
Single user on this laptop.
Ubuntu 16.04
It doesn't happen all the time, but it occurs sooner if I have been using a 
large number of tabs in Chrome.
Hope that might help. :)

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-07-15 Thread Rael Gugelmin Cunha
@Rolf: this issue is not new. But it started to happen everytime a
second user logs in after
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1311316 fix. I
helped to test that fix.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-07-03 Thread ptah via ubuntu-bugs
I can confirm this problem running Ubuntu 16.04 on Lenovo Carbon X1.
Started ~4 months ago.  Lock, close lid, open lid, "ubuntu
authentication failure switch to greeter", hit enter and return to
normal login screen.  Single user.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-06-29 Thread Rolf Leggewie
I doubt this is a regression due to the fix for bug 1311316, simply for
the fact that this problem was reported last November while the fix for
bug 1311316 was only uploaded to the archive in February.

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Title:
  Login screen showing Authentication Failure Switch to greeter...

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-06-29 Thread Rolf Leggewie
** Tags added: bionic

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  Login screen showing Authentication Failure Switch to greeter...

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-06-27 Thread DocWilco
A full reboot did fix this for me on 16.04

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-06-27 Thread bx1
The extra "Enter" to take me to the login screen is killing couple of
seconds of my work. I am not sure if this is related to Xorg. Ping me if
I need to dig in more. Here's the log

[ 40206.697] (II) AIGLX: Suspending AIGLX clients for VT switch
[ 40206.751] (EE) modeset(0): failed to set mode: Permission denied
[ 40212.065] (II) AIGLX: Resuming AIGLX clients after VT switch
[ 40212.131] (II) modeset(0): EDID vendor "AUO", prod id 8685
[ 40212.131] (II) modeset(0): Printing DDC gathered Modelines:
[ 40212.131] (II) modeset(0): Modeline "1920x1080"x0.0  141.00  1920 2028 2076 
2086  1080 1090 1100 1126 -hsync -vsync (67.6 kHz eP)
[ 40212.148] (--) synaptics: ELAN1300:00 04F3:3057 Touchpad: touchpad found

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  Login screen showing Authentication Failure Switch to greeter...

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-06-15 Thread Playing With
^ Crap. I was hoping the upgrade to 18.04 would remove it. I have the
same bug with 16.04. This is been going on for some time. Does anyone
know what is causing it???

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-06-10 Thread Rael Gugelmin Cunha
This bug happens in Bionic (18.04) too.

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  Login screen showing Authentication Failure Switch to greeter...

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-06-09 Thread Sam
I updated snapd (along with many other packages) and now the message is
gone. Maybe snapd was at fault, but I am not sure.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-06-03 Thread Lex_Dysia
I've experienced the same problem on a fully patched 16.04 LTS. 
This issue only occurred in the last few weeks & may have corresponded to when 
I added 3 new users to the machine.
I have previously used the first option in 
https://askubuntu.com/questions/859581/how-to-change-the-unity-lockscreen-wallpaper
 to modify my lock screen wallpaper.
After this recent "Authentication failure" issue occurred I recompiled the 
Greeter Schema as per the link above (sudo glib-compile-schemas 
/usr/share/glib-2.0/schemas) which has cured the problem on my machine at least.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-05-26 Thread Robert Clayton
Same error here with me on 16.04 (+ latest updates from security).  Also
using virtualbox as a plain ole non-root user.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-05-21 Thread Archit Kumar
Same error : 16.04lts , single user, dual boot.
kernel  4.13.0-39-generic

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-05-20 Thread Ross Reedstrom
count me an additional sufferer - 16.04.4, upgraded as upgrades came
out. I also see the behavior go away for a time, then come back after
the computer has not rebooted for a period of time. I see it no matter
how the computer is locked: crtl-alt-L, lid close to sleep, timeout, the
. Once the authentication error shows up, it doesn't go away until a
full reboot. Single user/session

Dell XPS 15 (9550) intel/nvidia, stock everything, except kernel updated
to 4.15.0-20-generic #21~16.04.1-Ubuntu

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-05-16 Thread amias
this is happening to me on 18.04 upgraded all the way from 16.04 as the
releases came out.

i don't have secure boot , i use an nvidia graphics card , i am running
vmware workstation 14

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  Login screen showing Authentication Failure Switch to greeter...

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-05-14 Thread Pavel Slechta
I can confirm the issue on 16.04.4 LTS. And I am not switching any
sessions.

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  Login screen showing Authentication Failure Switch to greeter...

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-05-13 Thread Abhay Mitra
Same issue on Ubuntu 16.04.4 LTS (single user login).

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-05-12 Thread Suresh Krishnamoorthy
Same  issue ubuntu 17.10 and auth.log looks exactly the same as reported
in https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1733557/comments/35>
comment #35   above.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-05-12 Thread Suresh Krishnamoorthy
tail /var/log/auth.log output

** Attachment added: "greeterror.log"
   
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1733557/+attachment/5138306/+files/greeterror.log

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  Login screen showing Authentication Failure Switch to greeter...

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-05-09 Thread Adrienne via ubuntu-bugs
This happens to me on 16.04LTS about once a week. When it happens my
login also changes to Kanji characters. the only way to fix it is to
reboot. Then it comes right back.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-30 Thread Erik Meitner
@Rael Gugelmin Cunha (rael-gc):
You are probably right. The changelog for the "unity" package says: "* Refactor 
the way UserAuthenticator is created and passed around. Handle failures to 
create new threads and fallback to a "Switch to greeter..." button in case of 
failure. (LP: #1311316)"

It seems that the initial  bug from LP: #1311316 of "Sometimes (but not
always) after locking the screen there is the situation not having any
input field where I can type the password to unlock the session again."
was addressed with a workaround, but this workaround has caused even
more problems. I never had the issue of not having a password prompt.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-29 Thread Ethan Lamoreaux
This bug has been bugging me for a while now, not sure exactly when it
showed up but it was after an update a good while ago. When I lock my
console, I get this "bug screen" immediately. When I want to unlock I
have to click the "Switch to greeter" button which has mysteriously
replaced my password entry blank. Typically my Xorg session is running
on virtual terminal 7. When I click the "switch to greeter" button, the
screen goes blank and a new Xorg session is started on VT8, which then
displays the greeter. I can switch between the bug screen on VT7 and the
greeter on VT8 using CTRL+ALT+(F7 or F8). After I log in, the Xorg
session on VT8 shuts down and I am automatically switched back to VT7
which may show the bug screen for a flash before the screen unlocks.

After a reboot (which I typically do only after an update that requires
it) this bug goes away for a while but just when I think it has been
fixed, it shows up again.

My /etc/shadow permissions are:
-rw-r- 1 root shadow 1924 Feb 18 02:53 /etc/shadow

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-27 Thread Aleksander Kamenik
My issue resolved itself. There was a kernel update with some other
package updates and after restarting the problem was gone.

The shadow file permissions are OK now, I did not have a chance to check
them before.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-26 Thread Rod Waltermann
I have this problem, and found a thread here:
https://askubuntu.com/questions/584207/cannot-log-in-at-locked-screensaver-must-log-in-with-switch-user?utm_medium=organic_source=google_rich_qa_campaign=google_rich_qa

The fix that worked for me was a permission problem on /etc/shadow
$ ls -l /etc/shadow
-rw-r- 1 root shadow 2202 Jun 23 12:39 /etc/shadow

For me the permission was:
$ ls -l /etc/shadow
-rw-r- 1 root root 2202 Jun 23 12:39 /etc/shadow

When I changed the group to shadow and restarted the system.  I was able
to login from the lock screen again.  The reason I believe that
restarting is required is that the lightdm crashes if it cannot access
the shadow file.  and once it crashed, you get the message about
authentication failure, switch to greeter.

The explanation was that the lockscreen runs in user context, whereas
the greeter runs as root, so the shadow group allows lightdm to access
it.

I tried the lock screen several times now, and it is solidly working.  I
did not change the group from shadow to root, so perhaps an update
changed the file permission, or a patch changed the password utility.
not sure.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-25 Thread Aleksander Kamenik
> This seems to be happening to me when my screens locks from timeout
and I come back.

Me too.

I started getting this problem about a week ago after the usual updates.
Ubuntu 16.04 LTS. I have only one account I use, pretty much defaults
everything. I do use Virtualbox though I get the problem without ever
even starting the Virtualbox console after a restart.

unity 7.4.5+16.04.20180221-0ubuntu1
unity-greeter 16.04.2-0ubuntu1

However when I check apt history the last time unity packages were
upgraded was 2018-03-06, at least a month earlier.
(/var/log/apt/history.log*)

What packages could have caused this? I unfortunately don't have an
exact date when this problem started and I think I postponed restarting
the computer for many days when the updater was nagging me to restart
last week.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-24 Thread Tao Zhang
Same problem here. Sometimes after this occurs, I cannot even log in,
have to restart the system.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-23 Thread Alex Whitney
This seems to be happening to me when my screens locks from timeout and
I come back.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-22 Thread Igor
Sorry, top-right corner of the top bar of course.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-22 Thread Igor
Kind of workaround until this annoying bug will be fixed.
This is for thouse who has this problem with multiple accounts.

1. Logout from all accounts or reboot the computer.
2. Login to first account.
3. Click the gear icon near clock in top-left corner of top bar, select second 
account in menu and login.

Never use the gear icon menu to change account again or you will get
'Authentication failure' error after next desktop locking.

Just switch between accounts pressing Ctrl-Alt-F7 and Ctrl-Alt-F8. You
can lock the desktops with Ctrl-Alt-L or Win-L as usual.

Can you confirm that it works?

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-18 Thread Jim Campbell
i don't think disabling the "guest session" session is part of the
issue, as we have that disabled and are still experiencing the problem.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-17 Thread Ismandra Eka Nugraha
Got the same issue. Disabling guest account seems not worked
https://askubuntu.com/questions/62564/how-do-i-disable-the-guest-session

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-16 Thread sugunakar
I got the same problem. But now it is working fine after disabling guest
account as mentioned in the below article

https://askubuntu.com/questions/62564/how-do-i-disable-the-guest-session

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-16 Thread Gunnar Grímsson
Updated just now and rebooted and it seems to be fixed, just a normal
login prompt. FYI :)

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-16 Thread Rael Gugelmin Cunha
Wondering if this issue is a side effect of fix for
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1311316

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-16 Thread Glide
Mostly same thing here with a brand new install.
It began to happen not long after I added an account for my wife.
The "Authentication failure" (on a separate login screen) systematically 
appears when I lock my screen with +L (or selecting Lock/Switch 
Account...)

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-15 Thread Matt Robinson
Same here, Ubuntu 16.04.4. If I close the lid to put my DELL E6230 into
sleep, upon opening the lid and bringing it out of sleep, it says
'Switch to greeter' message, same as OP.

Last system updates I actioned was installing security updates for the
Wayland Compositor (Binary utilities & dev files). It also installed
updates for Avahi (client library, common data files, common library &
GObject library).

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-14 Thread Gunnar Grímsson
Same here, either after updating Ubuntu 16.04 or after installing
Virtualbox. Just started this week.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-13 Thread Ibrahim Omar
Same on 16.04 after updating Unity to latest proposed packages.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-13 Thread sugunakar
I too have same problem. It just started in this week. I am using Ubuntu
16.04 version.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-12 Thread Antonin Chambolle
Same as everyone, #12 for instance. Appears each time I lock.

But it hasn't occurred to anyone that this could be some kind of phishing 
technique? 
Very often I start typing my password (or half of it) before realizing I have 
to click to switch to greeter, and in the meantime this screen is getting the 
input... There might well be some malicious code in one of the recent updates...

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-09 Thread Edward Fjellskål
This bug is really annoying!

btw, I run VMware® Workstation 12 Pro, 12.5.9 build-7535481.

My host:
Distributor ID: Ubuntu
Description:Ubuntu 16.04.4 LTS
Release:16.04
Codename:   xenial

Linux desktop 4.13.0-38-generic #43~16.04.1-Ubuntu SMP Wed Mar 14
17:48:43 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

The bug does not show it self before some days of uptime.

But then, every time the screen locks, I get this. At first, I could not
find a work around, and all my VMs crashed hard, which costs me a lot of
time, rebooting and booting all the VMs and starting all the apps I run
and use daily.

For some reason, for me, hitting CTRL+ALT+ENTER gets me back to the
original login screen, and I can unlock the screen, and continue.

Hope that upgrading to 18.04 soon might save the day!

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-06 Thread Jorge
This went away after a reboot a few days ago but today it has appeared
again. Yesterday it was working fine. No updates whatsoever between
yesterday and today. Plus, the bug prevents me from login remotely
through NoMachine NX.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-05 Thread Nathan Fox
This exact issue started happening to me a couple days ago. I didn't
notice any apparent cause. When I click or press any key, the screen
goes black for a second, then reloads with a system alert sound to the
normal login screen. After a successful login, the screen flashes the
"Switch to Greeter" screenshot that was attached to the original bug
before successfully logging in.

__uname__
Kernel: Linux
Kernel Release: 4.13.0-38-generic
Kernel Version: #43~16.04.1-Ubuntu SMP Wed Mar 14 17:48:43 UTC 2018
Network Node Hostname: redgray
Machine Hardware Name: x86_64
Processor: x86_64
Hardware Platform: x86_64
Operating System: GNU/Linux 16.04.4 LTS

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-04-05 Thread Nemanja Vukosav
Experiencing the same thing on Ubuntu 16.04.4 LTS for some time (maybe a
week) now.

I'm doing updates regularly.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-31 Thread Abdhul Lathif Riswan
I am facing this issue too. It happened when I tried to lock my
screen(Win+L).

I was using Chrome when the issue happened, the system would not respond
to the above command initially. I clicked on the screen(the bookmark pop
was open) a few times and tried the command again and it finally got
locked.

When I tried to unlock my system I saw the terminal for a few seconds
before the login screen. This happens everytime when I try to unlock the
screen now.

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:Ubuntu 16.04.4 LTS
Release:16.04
Codename:   xenial

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-30 Thread fagin
Same issue. It's been occurring for a couple of weeks. It's unrelated to
me updating anything. I don't have Virtualbox, Playonlinux or anything.
It comes and goes. This morning I step away from my computer, no
anomolies when screen locks. This afternoon, it's happening again. I
made no updates.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-30 Thread nrao
Facing the same issue for a week now. I am on Ubuntu 16.10.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-27 Thread Shlomo Bachar
After a few days without the bug, today it reappeared again.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-26 Thread Sam Stenvall
I also started experiencing this issue some time ago. My dad was
visiting and used the guest session and after that it started happening,
although I'm not 100% sure if it was incidental or not.

Rebooting helps for some time, but after a day or two the issue is back.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-20 Thread Shlomo Bachar
Update:
After restarting, the bug disappeared!

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-20 Thread Jim Campbell
Users at my workplace who experienced this issue are reporting that
updating all packages and restarting / rebooting has resolved the issue
for them, even after repeated screen locks and login-logouts.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-20 Thread Alex
I use Ubuntu 16.04.4 LTS and have exactly the same problem.

I recently added a new user account and keep getting this message:

 "Authentication failure - Switch to greeter" upon log-in

Any tips how to resolve this will be greatly appreciated.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-19 Thread Konstantin Boyandin
Confirming the bug in Ubuntu 16.04.4 (64-bit). Started to happen approx.
2 days ago, after recent standard updates have been applied.

I do not switch user sessions/whatever, use single account. Yet after
screensaver locks the screen, the "Authentication failure - Switch to
greeter" is always shown, even if I didn't tried to unlock the screen.

Extremely annoying.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-19 Thread Shlomo Bachar
This bug started to appear to me today suddenly.
It appears every time that my laptop wakes up from suspend.
I didn't do anything special. Maybe some update to system.
I have Ubuntu 16.04.4 LTS with GNOME (together with Unity, although I don't use 
Unity so much).
My laptop is ASUS V301L.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-19 Thread Jim Campbell
I'm not certain that this is due to multiple user accounts.

This bug has appeared on a coworker's system which has only one user
account. His session locked due to meeting the regular idle timeout
threshold, and he saw this greeter message when going to log back in.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-18 Thread hilault
Same bug appeared also on my home machine with two active accounts

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-18 Thread Igor
To #41

No, in my case, lock screen doesn't show "Authentication Failure, Switch
to Greeter" error after running the command you provided.

But it still shows this error if I just press Win+L to lock the computer
or after it's being locked automatically.

This problem only happens when at least two users logged to computer
even if one of them will logout later.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-15 Thread Magnus
The lock-screen shows the "Authentication Error" for me after following
your instructions.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-15 Thread Khurshid Alam
>From a fresh updated system run:

gdbus call -e -d com.canonical.indicator.session -o
/com/canonical/indicator/session -m org.gtk.Actions.Activate "switch-to-
greeter" "[]" "{}"

It will switch to greeter, login and then lock the screen (Ctrl+Alt+L).
Does the lock-screen show the "Authentication Error" ?

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-15 Thread WirelessMoves
Update to #37 and #38 reporting the issue on 16.04 LTS: The issue went
away as silently as it initially came. Ran another apt update/upgrade
today, totally different packages updated and then rebooted.
'Authentication Failure' in the lock screen is now gone, even after
several reboots.

For completeness here are the packages that updated, I don't see a
comonality here.:

Start-Date: 2018-03-14  21:25:36
Commandline: apt upgrade
Requested-By: martin (1000)
Install: linux-image-extra-4.13.0-37-generic:amd64 (4.13.0-37.42~16.04.1, 
automatic), linux-headers-4.13.0-37-generic:amd64 (4.13.0-37.42~16.04.1, 
automatic), linux-headers-4.13.0-37:amd64 (4.13.0-37.42~16.04.1, automatic), 
linux-image-4.13.0-37-generic:amd64 (4.13.0-37.42~16.04.1, automatic)
Upgrade: unity-control-center-faces:amd64 (15.04.0+16.04.20170214-0ubuntu2, 
15.04.0+16.04.20171130-0ubuntu1), linux-image-generic-hwe-16.04:amd64 
(4.13.0.36.55, 4.13.0.37.56), linux-generic-hwe-16.04:amd64 (4.13.0.36.55, 
4.13.0.37.56), unity-control-center:amd64 (15.04.0+16.04.20170214-0ubuntu2, 
15.04.0+16.04.20171130-0ubuntu1), firefox-locale-en:amd64 
(58.0.2+build1-0ubuntu0.16.04.1, 59.0+build5-0ubuntu0.16.04.1), 
libunity-control-center1:amd64 (15.04.0+16.04.20170214-0ubuntu2, 
15.04.0+16.04.20171130-0ubuntu1), firefox:amd64 
(58.0.2+build1-0ubuntu0.16.04.1, 59.0+build5-0ubuntu0.16.04.1), 
linux-headers-generic-hwe-16.04:amd64 (4.13.0.36.55, 4.13.0.37.56)
End-Date: 2018-03-14  21:26:48

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-14 Thread john rogers
I had this on my 16.04 system and it was INFURIATING - was taking 30s or so to 
login after a lock screen. 
I *think* I've found a workaround...
Changing the driver to neuveu reboot ( deal with the failure to detect 
resolution if needed )
change back to nvidia driver reboot
back to normal :) ( for the last 3 locks at least... fingers crossed!

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-14 Thread WirelessMoves
Addition: Here are the packages that were updated. After this update the
problem appeared on my 16.04 LTE system:

Log started: 2018-03-14  06:45:32
(Reading database ... 253390 files and directories currently installed.)
Preparing to unpack 
.../python-samba_2%3a4.3.11+dfsg-0ubuntu0.16.04.13_amd64.deb ...
Unpacking python-samba (2:4.3.11+dfsg-0ubuntu0.16.04.13) over 
(2:4.3.11+dfsg-0ubuntu0.16.04.12) ...
Preparing to unpack 
.../samba-common-bin_2%3a4.3.11+dfsg-0ubuntu0.16.04.13_amd64.deb ...
Unpacking samba-common-bin (2:4.3.11+dfsg-0ubuntu0.16.04.13) over 
(2:4.3.11+dfsg-0ubuntu0.16.04.12) ...
Preparing to unpack .../smbclient_2%3a4.3.11+dfsg-0ubuntu0.16.04.13_amd64.deb 
...
Unpacking smbclient (2:4.3.11+dfsg-0ubuntu0.16.04.13) over 
(2:4.3.11+dfsg-0ubuntu0.16.04.12) ...
Preparing to unpack .../samba-libs_2%3a4.3.11+dfsg-0ubuntu0.16.04.13_amd64.deb 
...
Unpacking samba-libs:amd64 (2:4.3.11+dfsg-0ubuntu0.16.04.13) over 
(2:4.3.11+dfsg-0ubuntu0.16.04.12) ...
Preparing to unpack 
.../libwbclient0_2%3a4.3.11+dfsg-0ubuntu0.16.04.13_amd64.deb ...
Unpacking libwbclient0:amd64 (2:4.3.11+dfsg-0ubuntu0.16.04.13) over 
(2:4.3.11+dfsg-0ubuntu0.16.04.12) ...
Preparing to unpack 
.../libsmbclient_2%3a4.3.11+dfsg-0ubuntu0.16.04.13_amd64.deb ...
Unpacking libsmbclient:amd64 (2:4.3.11+dfsg-0ubuntu0.16.04.13) over 
(2:4.3.11+dfsg-0ubuntu0.16.04.12) ...
Preparing to unpack .../samba-common_2%3a4.3.11+dfsg-0ubuntu0.16.04.13_all.deb 
...
Unpacking samba-common (2:4.3.11+dfsg-0ubuntu0.16.04.13) over 
(2:4.3.11+dfsg-0ubuntu0.16.04.12) ...
Preparing to unpack .../update-notifier_3.168.8_amd64.deb ...
Unpacking update-notifier (3.168.8) over (3.168.7) ...
Preparing to unpack .../update-notifier-common_3.168.8_all.deb ...
Unpacking update-notifier-common (3.168.8) over (3.168.7) ...
Preparing to unpack .../libapparmor1_2.10.95-0ubuntu2.9_amd64.deb ...
Unpacking libapparmor1:amd64 (2.10.95-0ubuntu2.9) over (2.10.95-0ubuntu2.8) ...
Processing triggers for man-db (2.7.5-1) ...
Processing triggers for libc-bin (2.23-0ubuntu10) ...
Processing triggers for hicolor-icon-theme (0.15-0ubuntu1) ...
Processing triggers for gconf2 (3.2.6-3ubuntu6) ...
Processing triggers for libglib2.0-0:amd64 (2.48.2-0ubuntu1) ...
Setting up libapparmor1:amd64 (2.10.95-0ubuntu2.9) ...
Processing triggers for libc-bin (2.23-0ubuntu10) ...
(Reading database ... 253390 files and directories currently installed.)
Preparing to unpack .../libgcrypt20_1.6.5-2ubuntu0.4_amd64.deb ...
Unpacking libgcrypt20:amd64 (1.6.5-2ubuntu0.4) over (1.6.5-2ubuntu0.3) ...
Processing triggers for libc-bin (2.23-0ubuntu10) ...
Setting up libgcrypt20:amd64 (1.6.5-2ubuntu0.4) ...
Processing triggers for libc-bin (2.23-0ubuntu10) ...
(Reading database ... 253390 files and directories currently installed.)
Preparing to unpack .../libapparmor-perl_2.10.95-0ubuntu2.9_amd64.deb ...
Unpacking libapparmor-perl (2.10.95-0ubuntu2.9) over (2.10.95-0ubuntu2.8) ...
Preparing to unpack .../apparmor_2.10.95-0ubuntu2.9_amd64.deb ...
Unpacking apparmor (2.10.95-0ubuntu2.9) over (2.10.95-0ubuntu2.8) ...
Preparing to unpack .../friendly-recovery_0.2.31ubuntu1_all.deb ...
Unpacking friendly-recovery (0.2.31ubuntu1) over (0.2.31) ...
Preparing to unpack 
.../flashplugin-installer_29.0.0.113ubuntu0.16.04.1_amd64.deb ...
Unpacking flashplugin-installer (29.0.0.113ubuntu0.16.04.1) over 
(28.0.0.161ubuntu0.16.04.1) ...
Processing triggers for systemd (229-4ubuntu21.1) ...
Processing triggers for ureadahead (0.100.0-19) ...
ureadahead will be reprofiled on next reboot
Processing triggers for man-db (2.7.5-1) ...
Setting up libwbclient0:amd64 (2:4.3.11+dfsg-0ubuntu0.16.04.13) ...
Setting up samba-libs:amd64 (2:4.3.11+dfsg-0ubuntu0.16.04.13) ...
Setting up python-samba (2:4.3.11+dfsg-0ubuntu0.16.04.13) ...
Setting up samba-common (2:4.3.11+dfsg-0ubuntu0.16.04.13) ...
Setting up samba-common-bin (2:4.3.11+dfsg-0ubuntu0.16.04.13) ...
Setting up libsmbclient:amd64 (2:4.3.11+dfsg-0ubuntu0.16.04.13) ...
Setting up smbclient (2:4.3.11+dfsg-0ubuntu0.16.04.13) ...
Setting up update-notifier-common (3.168.8) ...
flashplugin-installer: processing...
flashplugin-installer: downloading 
http://archive.canonical.com/pool/partner/a/adobe-flashplugin/adobe-flashplugin_20180313.1.orig.tar.gz
Get:1 
http://archive.canonical.com/pool/partner/a/adobe-flashplugin/adobe-flashplugin_20180313.1.orig.tar.gz
 [30.5 MB]
Fetched 30.5 MB in 7s (3,828 kB/s) 
Installing from local file 
/var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugin_20180313.1.orig.tar.gz
Flash Plugin installed.
Setting up update-notifier (3.168.8) ...
Setting up libapparmor-perl (2.10.95-0ubuntu2.9) ...
Setting up apparmor (2.10.95-0ubuntu2.9) ...
Installing new version of config file /etc/apparmor.d/abstractions/base ...
update-rc.d: warning: start and stop actions are no longer supported; falling 
back to defaults
Skipping profile in /etc/apparmor.d/disable: usr.bin.firefox
Skipping profile in 

[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-14 Thread WirelessMoves
Same here, happens since I installed updates on my 16.04 system
yesterday. Never had this before. Uisng STRG-L to lock the screen
frequently.

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  Login screen showing Authentication Failure Switch to greeter...

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-13 Thread Erik Meitner
I have this problem after installing updates yesterday. Looks like like
how Eugene shows in comment #10.

The attachment contains the data logged in  x-0.log, seat0-greeter.log,
lightdm.log, and x-1.log in the /var/log/lightdm directory during a
test. I pressed CTRL-ALT-L, waited 10 seconds, clicked  "Switch to
greeter...", waited 10 seconds, then logged in and stopped recording.

There is a DBus error, but not much else.


** Attachment added: "lightdmlogs.txt"
   
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1733557/+attachment/5078263/+files/lightdmlogs.txt

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  Login screen showing Authentication Failure Switch to greeter...

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-12 Thread Axl Mattheus
Replaced my hostname with ...hostname... and user name with ...user...

auth.log says:

Mar 13 16:59:10 ...hostname... lightdm: PAM unable to dlopen(pam_kwallet.so): 
/lib/security/pam_kwallet.so: cannot open shared object file: No such file or 
directory
Mar 13 16:59:10 ...hostname... lightdm: PAM adding faulty module: pam_kwallet.so
Mar 13 16:59:10 ...hostname... lightdm: PAM unable to dlopen(pam_kwallet5.so): 
/lib/security/pam_kwallet5.so: cannot open shared object file: No such file or 
directory
Mar 13 16:59:10 ...hostname... lightdm: PAM adding faulty module: 
pam_kwallet5.so
Mar 13 16:59:10 ...hostname... lightdm: pam_unix(lightdm-greeter:session): 
session opened for user lightdm by (uid=0)
Mar 13 16:59:10 ...hostname... systemd-logind[1033]: New session c6 of user 
lightdm.
Mar 13 16:59:10 ...hostname... lightdm: PAM unable to dlopen(pam_kwallet.so): 
/lib/security/pam_kwallet.so: cannot open shared object file: No such file or 
directory
Mar 13 16:59:10 ...hostname... lightdm: PAM adding faulty module: pam_kwallet.so
Mar 13 16:59:10 ...hostname... lightdm: PAM unable to dlopen(pam_kwallet5.so): 
/lib/security/pam_kwallet5.so: cannot open shared object file: No such file or 
directory
Mar 13 16:59:10 ...hostname... lightdm: PAM adding faulty module: 
pam_kwallet5.so
Mar 13 16:59:10 ...hostname... lightdm: pam_succeed_if(lightdm:auth): 
requirement "user ingroup nopasswdlogin" not met by user "...user..."
Mar 13 16:59:16 ...hostname... lightdm: pam_unix(lightdm-greeter:session): 
session closed for user lightdm

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  Login screen showing Authentication Failure Switch to greeter...

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-12 Thread Edu
Same issue in my laptop Lenovo G40-80 I think after some apt-get
update/upgrade it has started. (Between 2 or 3 weeks ago)

I'm the only user of this computer. There is only my user and admin is disabled.
I use Virtual Box and it was upgraded recently to Version 5.1.34 r121010 
(Qt5.5.1).

If I lock screen it don't happens immediately. It happens only after screen 
goes blank.
Then I have to click on "switch to greeter" in password field and wait some 
seconds to screen changes and I be able to insert password.

# lsb_release -a
LSB Version:
core-9.20160110ubuntu0.2-amd64:core-9.20160110ubuntu0.2-noarch:printing-9.20160110ubuntu0.2-amd64:printing-9.20160110ubuntu0.2-noarch:security-9.20160110ubuntu0.2-amd64:security-9.20160110ubuntu0.2-noarch
Distributor ID: Ubuntu
Description:Ubuntu 16.04.4 LTS
Release:16.04
Codename:   xenial

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  Login screen showing Authentication Failure Switch to greeter...

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-12 Thread DeltaLima (Marcus)
same here, experiencing this until 2018-03-08 on my DellXPS 13 with latest i7 
gen. (8.).
i have not done some debugging, but at this date the unity package was updated:

2018-03-08 09:35:13 upgrade unity:amd64 7.4.5+16.04.20171201.3
7.4.5+16.04.20180221-0ubuntu1

root@Atomrakete:~# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:Ubuntu 16.04.4 LTS
Release:16.04
Codename:   xenial


It happens to me when i lock my screen with win+l

logfiles needed by someone?

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  Login screen showing Authentication Failure Switch to greeter...

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-12 Thread B@MB@M
I have the same issue.

I have Virtualbox running as well.
I'm not switching between users. Just standby and resume.


Here are some parts of several logfiles.

auth.log
==
Mar 12 16:36:33 BN pkexec: pam_systemd(polkit-1:session): Cannot create 
session: Already running in a session
Mar 12 16:36:33 BN pkexec[20336]: bart: Executing command [USER=root] 
[TTY=unknown] [CWD=/home/bart] 
[COMMAND=/usr/lib/unity-settings-daemon/usd-backlight-helper --set-brightness 
7126]
Mar 12 16:36:45 BN lightdm: PAM unable to dlopen(pam_kwallet.so): 
/lib/security/pam_kwallet.so: cannot open shared object file: No such file or 
directory
Mar 12 16:36:45 BN lightdm: PAM adding faulty module: pam_kwallet.so
Mar 12 16:36:45 BN lightdm: PAM unable to dlopen(pam_kwallet5.so): 
/lib/security/pam_kwallet5.so: cannot open shared object file: No such file or 
directory
Mar 12 16:36:45 BN lightdm: PAM adding faulty module: pam_kwallet5.so
Mar 12 16:36:45 BN lightdm: pam_unix(lightdm-greeter:session): session opened 
for user lightdm by (uid=0)
Mar 12 16:36:45 BN systemd-logind[1178]: New session c32 of user lightdm.
Mar 12 16:36:45 BN lightdm: PAM unable to dlopen(pam_kwallet.so): 
/lib/security/pam_kwallet.so: cannot open shared object file: No such file or 
directory
Mar 12 16:36:45 BN lightdm: PAM adding faulty module: pam_kwallet.so
Mar 12 16:36:45 BN lightdm: PAM unable to dlopen(pam_kwallet5.so): 
/lib/security/pam_kwallet5.so: cannot open shared object file: No such file or 
directory
Mar 12 16:36:45 BN lightdm: PAM adding faulty module: pam_kwallet5.so
Mar 12 16:36:45 BN lightdm: pam_succeed_if(lightdm:auth): requirement "user 
ingroup nopasswdlogin" not met by user "bart"
Mar 12 16:36:49 BN lightdm: pam_unix(lightdm-greeter:session): session closed 
for user lightdm
Mar 12 16:36:49 BN dbus[1153]: [system] Rejected send message, 2 matched rules; 
type="method_call", sender=":1.498" (uid=109 pid=20527 
comm="/usr/lib/x86_64-linux-gnu/indicator-bluetooth/indi") 
interface="org.freedesktop.DBus.Properties" member="GetAll" error 
name="(unset)" requested_reply="0" destination=":1.380" (uid=0 pid=10380 
comm="/usr/lib/bluetooth/bluetoothd ")
Mar 12 16:36:49 BN dbus[1153]: [system] Rejected send message, 2 matched rules; 
type="method_call", sender=":1.498" (uid=109 pid=20527 
comm="/usr/lib/x86_64-linux-gnu/indicator-bluetooth/indi") 
interface="org.freedesktop.DBus.ObjectManager" member="GetManagedObjects" error 
name="(unset)" requested_reply="0" destination="org.bluez" (uid=0 pid=10380 
comm="/usr/lib/bluetooth/bluetoothd ")
Mar 12 16:37:15 BN sudo: bart : TTY=pts/22 ; PWD=/home/bart ; USER=root ; 
COMMAND=/usr/bin/zsh
Mar 12 16:37:15 BN sudo: pam_unix(sudo:session): session opened for user root 
by (uid=0)
Mar 12 16:38:58 BN pkexec: pam_unix(polkit-1:session): session opened for user 
root by (uid=1000)
Mar 12 16:38:58 BN pkexec: pam_systemd(polkit-1:session): Cannot create 
session: Already running in a session
Mar 12 16:38:58 BN pkexec[22237]: bart: Executing command [USER=root] 
[TTY=unknown] [CWD=/home/bart] 
[COMMAND=/usr/lib/update-notifier/package-system-locked]


Xorg.0.log
==
[ 23362.625] (II) AIGLX: Suspending AIGLX clients for VT switch
[ 23364.120] (--) synaptics: DLL075B:01 06CB:76AF Touchpad: touchpad found
[ 23368.192] (II) AIGLX: Resuming AIGLX clients after VT switch
[ 23369.699] (II) Quirked EDID physical size to 0x0 cm
[ 23369.699] (II) modeset(0): EDID vendor "SAM", prod id 1485
[ 23369.699] (II) modeset(0): Using hsync ranges from config file
[ 23369.699] (II) modeset(0): Using vrefresh ranges from config file
[ 23369.699] (II) modeset(0): Printing DDC gathered Modelines:
[ 23369.699] (II) modeset(0): Modeline "1920x1080"x0.0  148.50  1920 2008 2052 
2200  1080 1084 1089 1125 +hsync +vsync (67.5 kHz eP)
[ 23369.699] (II) modeset(0): Modeline "1280x720"x0.0   74.25  1280 1390 1430 
1650  720 725 730 750 +hsync +vsync (45.0 kHz e)
[ 23369.699] (II) modeset(0): Modeline "1920x1080i"x0.0   74.25  1920 2448 2492 
2640  1080 1084 1094 1125 interlace +hsync +vsync (28.1 kHz e)
[ 23369.699] (II) modeset(0): Modeline "1920x1080i"x0.0   74.25  1920 2008 2052 
2200  1080 1084 1094 1125 interlace +hsync +vsync (33.8 kHz e)
[ 23369.699] (II) modeset(0): Modeline "1280x720"x0.0   74.25  1280 1720 1760 
1980  720 725 730 750 +hsync +vsync (37.5 kHz e)
[ 23369.699] (II) modeset(0): Modeline "720x576"x0.0   27.00  720 732 796 864  
576 581 586 625 -hsync -vsync (31.2 kHz e)
[ 23369.699] (II) modeset(0): Modeline "720x480"x0.0   27.00  720 736 798 858  
480 489 495 525 -hsync -vsync (31.5 kHz e)
[ 23369.699] (II) modeset(0): Modeline "800x600"x0.0   40.00  800 840 968 1056  
600 601 605 628 +hsync +vsync (37.9 kHz e)
[ 23369.699] (II) modeset(0): Modeline "800x600"x0.0   36.00  800 824 896 1024  
600 601 603 625 +hsync +vsync (35.2 kHz e)
[ 23369.699] (II) modeset(0): Modeline "640x480"x0.0   25.18  640 656 752 800  
480 490 492 525 -hsync -vsync 

[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-12 Thread B@MB@M
this is a 16.04 system

$ lsb_release -a
LSB Version:
core-9.20160110ubuntu0.2-amd64:core-9.20160110ubuntu0.2-noarch:printing-9.20160110ubuntu0.2-amd64:printing-9.20160110ubuntu0.2-noarch:security-9.20160110ubuntu0.2-amd64:security-9.20160110ubuntu0.2-noarch
Distributor ID: Ubuntu
Description:Ubuntu 16.04.4 LTS
Release:16.04
Codename:   xenial

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-11 Thread P.Constantine
Mar 11 22:50:23 lenovo lightdm[1216]: ** (lightdm:1216): WARNING **: Error 
using VT_WAITACTIVE 7 on /dev/tty0: Interrupted system call
Mar 11 22:50:23 lenovo org.gtk.vfs.Daemon[11625]: A connection to the bus can't 
be made

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  Login screen showing Authentication Failure Switch to greeter...

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-11 Thread Alexander
Confirming the same issue, Ubuntu: 16.04 LTS
Just began to experience it after last batch of system updates.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-11 Thread Bodinux
I confirm the occurrence of this bug since yesterday.

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-10 Thread R_volkmann
Same for me since last unity update and is very annoying


- CPU: i8700k
- Geforce 1060
- no Virtualbox installed
- multi-user
- English languade, German keyboard

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-09 Thread Rubens
Same issue!
Ubuntu: 16.04 LTS

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[Bug 1733557] Re: Login screen showing Authentication Failure Switch to greeter...

2018-03-07 Thread Silvia
I have this problem starting from today when I locked my laptop with
win+L.

Description:Ubuntu 16.04.4 LTS
Release:16.04
Codename:   xenial

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