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Today after regular system updates on my 12.04 LTS system, I cannot login anymore. On a greeter password is said to be invalid immediately (without the usual delay). And on tty the same result, just delay is present

This is what I already tried:

  1. Checking Caps lock, Keyboard layout and similar things.
  2. Going into recovery mode root shell, remounting filesystem passwd`ing
  3. updating system from apt-get and root shell
  4. chroot`ing into my system from liveUSB, and executing passwd

A little more about passwd, I wanted to change/update my password with passwd on root shell (recovery mode), and from chroot`ed environment (from liveUSB). But I could not do so, because I always got an error:

my-computer-name# passwd myUserName
passwd: Authentication token manipulation error
passwd: Password unchanged

The filesystem has been remounted to rw correctly, (I tried to create/edit/save some files with vim).

In the file /var/log/auth.log I can see one strange message emitted from lightdm, that seems to be related to this issue:

pam_winbind(lightdm:auth): request wbcLogonUser failed: WBC_ERR_AUTH_ERROR, PAM error: PAM_USER_UNKNOWN (10), NTSTATUS:NT_STATUS_NO_SUCH_USER, Error message was: No such user
pam_succeed_if(lightdm:auth): requirement "user indgroup nopasswdlogin" not met by user "rytis"

These are the packets, that has been updated by update:

    base-files
    bind9-host
    dns-utils
    libdns
    libpam-ck-connector
    libisccc
    lib-ck-connector0
    liblwres80
    libbind9-80
    libisccfg82
    libisc83
    consolekit
    language-pack-gnome-en-base
    language-pack-gnome-en
    google-chrome-stable
    flashplugin-installer
    language-pack-en-base
    language-pack-en

Note:

Long time ago I set root password for my computer, and while I cannot log into root with that password while booting normaly, I can, however, while booting into recovery.

Rytis Karpuška
  • 51

1 Answers1

2

Ok Finally I got it solved:

I just reinstalled all the packages which was related to the PAM, I do not know which one exactly was causing the problems:

sudo apt-get install --reinstall libpam-cap libpam-ck-connector libpam-cracklib libpam-gnome-keyring libpam-modules libpam-modules-bin libpam-winbind libpam0g
Rytis Karpuška
  • 51