Segfault at 18 ip 00007f5480428f6c sp 00007fffa8aa6760 error 4 in libindicator3.so.7.0.0

[Jani Uusitalo]

After yesterday's upgrades including libindicator7, unity-greeter crashes repeatedly until failsafe kicks in, and even then, after selecting low graphics mode for the session, it crashes. I managed to get X working again by downgrading unity-greeter back to 0.2.0-0ubuntu4 which I'm filing this report with. The crashing update was version 0.2.0-0ubuntu5.

I'm attaching the crash file.

It seems I'm not able to reproduce this on my other computer (also running up-to-date Precise), so I'll look for differences in the setups.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity-greeter 0.2.0-0ubuntu4
ProcVersionSignature: Ubuntu 3.2.0-10.18-generic 3.2.1
Uname: Linux 3.2.0-10-generic x86_64
ApportVersion: 1.91-0ubuntu1
Architecture: amd64
CheckboxSubmission: 09ae689090491ca53449589269e4bfd8
CheckboxSystem: edda5d4f616ca792bf437989cb597002
Date: Thu Jan 26 09:10:27 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
SourcePackage: unity-greeter
UpgradeStatus: Upgraded to precise on 2012-01-17 (8 days ago)

[Launchpad Janitor (janitor)]

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

[Emanuele Sottocorno (sotema)]

I have the same problem after executing Update-Manager this morning.
I was unable to downgrade to version 0.2.0-0ubuntu4:
sudo apt-get install unity-greeter=0.2.0-0ubuntu4 say E: Version '0.2.0-0ubuntu4' for unity-greeter' was not found.
Please tell me how can i install that version

[Jani Uusitalo (uusijani)]

Emanuele: You'll need to go through some hoops via the Overview page linked to on top of this report, until you get to https://launchpad.net/ubuntu/precise/+source/unity-greeter/0.2.0-0ubuntu4 where you need to pick the build for your architecture. Use dpkg --install to install the .deb file. Good luck!

[Emanuele Sottocorno (sotema)]

Thanks Jani,
my Precise is back.

[Alexandre Jodoin (cacalex)]

I have the same problem.
Downgrading to version 0.2.0-0ubuntu4 fixed it.

[Jason Conti (jconti)]

Can everyone experiencing this issue please check the greeter log in /var/log/lightdm/ and look for a line similar to:

WARNING: File '/usr/lib/indicators3/7/libdatetime.so' does not exist

and if you find it, make sure indicator-datetime is installed. The issue, based on a discussion in irc, seems to be that unity-greeter doesn't check for a null indicator object after attempting to load it from a file in src/menubar.vala:304.

[Davide Belloni (dbelloni)]

For me the problem has been:

WARNING: File '/usr/lib/indicators3/7/libpower.so' does not exist

So I've installed indicator-power and now all works great!

[Alexandre Jodoin (cacalex)]

WARNING: File '/usr/lib/indicators3/6/libsession.so' does not exist.
WARNING: File '/usr/lib/indicators3/6/libdatetime.so' does not exist.
WARNING: File '/usr/lib/indicators3/6/libpower.so' does not exist.
WARNING: File '/usr/lib/indicators3/6/libsoundmenu.so' does not exist.
WARNING: File '/usr/lib/indicators3/7/libdatetime.so' does not exist.

OK... I win.
:)

I'll give it a try.

[Jani Uusitalo (uusijani)]

Jason: As with Davide, it was indicator-power that was missing here. The greeter log didn't show that though, it claimed libdatetime.so was missing even though indicator-datetime is in fact installed.

[spaetz (spaetz)]

As indicator-datetime is not installed by default on xubuntu, this will be an issue for everyone using xubuntu. I know that it hit me :-)

[Maurie Reed (moria6)]

Downgrading greeter worked although I was prompted to install libindicator3-6 first. System had worked prior to last update && upgrade. No trace of libdatetime.so in greeter logs. System has been running 12.04 since 1/5/12 - upgraded from 11.10

[Emanuele Sottocorno (sotema)]

Found:
WARNING: File '/usr/lib/indicators3/7/libdatetime.so' does not exist
 and no indicator installed.
Installed indicator and upgraded unity-greeter to 0.2.0-0ubuntu5, everything is ok now.
Thanks

[DaleEMoore (daleemoore)]

This was my first major hiccup in using Ubuntu 12.04; thanks for posting this information!

apt-get install indicator-datetime

fixed it for me.