unix_chkpwd abnormal exit: 11; unlock only works on second attempt and switch user

[jonobarel]

This only happens on my Netbook, running UNR 9.10 and 10.04:

Whenever the screen gets locked (timeout, return from standby, manual lock), I try to unlock it but the system rejects my login attempt.

I'm running a dual-language system, but I checked the input language, and it's the right one. In fact, I have several systems running multiple languages, and this ONLY happens on the netbook.

I've checked the logs, and seen the following info in /var/log/auth.log:

Aug 13 16:15:19 jonathan-computer gnome-screensaver-dialog: pam_winbind(gnome-screensaver: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
Aug 13 16:15:21 jonathan-computer gnome-screensaver-dialog: pam_unix(gnome-screensaver:auth): unix_chkpwd abnormal exit: 11
Aug 13 16:15:25 jonathan-computer gdm-session-worker[31679]: pam_succeed_if(gdm:auth): requirement "user ingroup nopasswdlogin" not met by user "jonathan"

The only workaround seems to be to click the Switch User button, and then login to my active session again.

[Chris Wilson (notgary-deactivatedaccount)]

I believe this is a bug rather than a papercut. The definition of a papercut has two key points:

 - A papercut must be a usability bug that is encountered by an average user regularly during their day-to-day computing habits ie browsing the web, checking email, IMing, etc.
- It should be fixable by one developer in one day.

This bug does not fulfil first of these criteria in my opinion, so I am marking it as invalid. An average user is unlikely to be using a multiple monitor setup. This sounds more like a bug in Unity/UNE since it only happens on 9.10 and 10.04. I have marked this bug as affecting Unity.

[Launchpad Janitor (janitor)]

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