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Message #00560
[Bug 956848] Re: pam_mkhomedir.so fails to create homedir in precise
Hello,
I also faced that issue and that is a very annoying problem because we are a company and we use LDAP authentication and home directories are mounted via NFS. Most of the machines still runs on 10.04 and only a few have 12.04.
The problem occurs only with 12.04. It happens with lightdm and gdm as well so I do not really understand how a fix in the lightdm - 1.2.0-0ubuntu1 package can also solve the gdm problem.
We have the same two syslog lines (as Ballock in original message) :
accounts-daemon[ ] segfault error 4 in libdbus-1.so.3.5.8
followed by
gdm-session-wor[ ] segfault erroror 4 in libc-2.15.so
Sometimes, user can login and syslog only show the first segfault
(accounts-daemon). Sometimes users cannot login at all. It "seems"
aleatory.
Thank you.
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https://bugs.launchpad.net/bugs/956848
Title:
pam_mkhomedir.so fails to create homedir in precise
Status in Light Display Manager:
Fix Released
Status in “lightdm” package in Ubuntu:
Fix Released
Status in “lightdm” source package in Precise:
Fix Released
Bug description:
I am testing Ubuntu Precise and I think I found a bug related to creation of home directories with pam_mkhomedir.so. I found it initially in an LDAP-based setup, but to nail down the problem I did a fresh re-install, added:
session optional pam_mkhomedir.so umask=0077 skel=/etc/skel
to /etc/pam.d/common-session and I removed the home directory of the user used during installation, so the bug has nothing to do with network auth.
Anyway - when I login to lightdm I am successfully authenticated and
the logon screen disappears, but I am presented with a black screen
and nothing happens. I can login from text mode, the homedir is
created and afterwards I can login, even using the graphical
interface.
I tried to see if this is related to lightdm or unity, but if I select
Gnome classic, I get the same problem, if I switch to GDM, the problem
remains.
I am attaching the logs from lightdm. The syslog says:
Mar 16 10:31:45 tubuntu kernel: [99829.342230] accounts-daemon[2152]: segfault at 10 ip b76c86c3 sp bfab7640 error 4 in libdbus-1.so.3.5.8[b76a3000+47000]
Mar 16 10:31:45 tubuntu kernel: [99829.342545] gdm-session-wor[29440]: segfault at 6e756279 ip b743cd4c sp bf84b250 error 4 in libc-2.15.so[b73ca000+19e000]
but I cannot say if this caused the issue or was caused by the issue.
I hope somebody can have a look at this. I can help to do some
investigating, unfortunately I don't know where to look.
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