FWIW - I have Marco's PPA package installed and I continue to see this issue. Another issue that seems partly relevant is that my screensaver never stays on for more than a few minutes before I see the lock screen again. I notice that when this happens, this issue is more prevelant. Here is a snippet of my auth.log (note that I, nor anyone else is at the office during this time frame) and 6:25 is when I first sat down at my desk to log in.
212 Dec 2 04:40:14 d000-mzuba1 compiz: PAM adding faulty module: pam_kwallet.so 213 Dec 2 04:52:04 d000-mzuba1 compiz: PAM unable to dlopen(pam_kwallet.so): /lib/security/pam_kwallet.so: cannot open shared object file: No such file or directory 214 Dec 2 04:52:04 d000-mzuba1 compiz: PAM adding faulty module: pam_kwallet.so 215 Dec 2 05:03:52 d000-mzuba1 compiz: PAM unable to dlopen(pam_kwallet.so): /lib/security/pam_kwallet.so: cannot open shared object file: No such file or directory 216 Dec 2 05:03:52 d000-mzuba1 compiz: PAM adding faulty module: pam_kwallet.so 217 Dec 2 05:15:42 d000-mzuba1 compiz: PAM unable to dlopen(pam_kwallet.so): /lib/security/pam_kwallet.so: cannot open shared object file: No such file or directory 218 Dec 2 05:15:42 d000-mzuba1 compiz: PAM adding faulty module: pam_kwallet.so 219 Dec 2 05:27:30 d000-mzuba1 compiz: PAM unable to dlopen(pam_kwallet.so): /lib/security/pam_kwallet.so: cannot open shared object file: No such file or directory 220 Dec 2 05:27:30 d000-mzuba1 compiz: PAM adding faulty module: pam_kwallet.so 221 Dec 2 05:39:18 d000-mzuba1 compiz: PAM unable to dlopen(pam_kwallet.so): /lib/security/pam_kwallet.so: cannot open shared object file: No such file or directory 222 Dec 2 05:39:18 d000-mzuba1 compiz: PAM adding faulty module: pam_kwallet.so 223 Dec 2 05:51:06 d000-mzuba1 compiz: PAM unable to dlopen(pam_kwallet.so): /lib/security/pam_kwallet.so: cannot open shared object file: No such file or directory 224 Dec 2 05:51:06 d000-mzuba1 compiz: PAM adding faulty module: pam_kwallet.so 225 Dec 2 06:02:55 d000-mzuba1 compiz: PAM unable to dlopen(pam_kwallet.so): /lib/security/pam_kwallet.so: cannot open shared object file: No such file or directory 226 Dec 2 06:02:55 d000-mzuba1 compiz: PAM adding faulty module: pam_kwallet.so 227 Dec 2 06:14:43 d000-mzuba1 compiz: PAM unable to dlopen(pam_kwallet.so): /lib/security/pam_kwallet.so: cannot open shared object file: No such file or directory 228 Dec 2 06:14:43 d000-mzuba1 compiz: PAM adding faulty module: pam_kwallet.so 229 Dec 2 06:25:41 d000-mzuba1 unix_chkpwd[14694]: check pass; user unknown 230 Dec 2 06:25:41 d000-mzuba1 unix_chkpwd[14694]: password check failed for user (mzuba) 231 Dec 2 06:25:41 d000-mzuba1 compiz: pam_unix(lightdm:auth): authentication failure; logname= uid=1002442509 euid=1002442509 tty= ruser= rhost= user=mzuba 232 Dec 2 06:25:41 d000-mzuba1 compiz: gkr-pam: unlocked login keyring 233 Dec 2 06:25:41 d000-mzuba1 unix_chkpwd[14703]: could not obtain user info (mzuba) 234 Dec 2 06:25:48 d000-mzuba1 compiz: PAM unable to dlopen(pam_kwallet.so): /lib/security/pam_kwallet.so: cannot open shared object file: No such file or directory 235 Dec 2 06:25:48 d000-mzuba1 compiz: PAM adding faulty module: pam_kwallet.so 236 Dec 2 06:25:48 d000-mzuba1 compiz: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "mzuba" 237 Dec 2 06:25:52 d000-mzuba1 unix_chkpwd[15012]: check pass; user unknown 238 Dec 2 06:25:52 d000-mzuba1 unix_chkpwd[15012]: password check failed for user (mzuba) 239 Dec 2 06:25:52 d000-mzuba1 compiz: pam_unix(lightdm:auth): authentication failure; logname= uid=1002442509 euid=1002442509 tty= ruser= rhost= user=mzuba 240 Dec 2 06:25:52 d000-mzuba1 compiz: gkr-pam: unlocked login keyring 241 Dec 2 06:25:52 d000-mzuba1 unix_chkpwd[15015]: could not obtain user info (mzuba) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unity in Ubuntu. https://bugs.launchpad.net/bugs/1311316 Title: After locking screen there is no input field to type password for unlock Status in Unity: Fix Committed Status in Unity 7.2 series: In Progress Status in unity package in Ubuntu: Fix Released Bug description: 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. The shaded gray area simply does not have the input field. I can't do anything, I have to switch to text console and stop/start lightdm service to cure the problem loosing all of my session :( ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: unity 7.2.0+14.04.20140416-0ubuntu1 ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 Uname: Linux 3.13.0-24-generic i686 ApportVersion: 2.14.1-0ubuntu3 Architecture: i386 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CurrentDesktop: Unity Date: Tue Apr 22 22:17:57 2014 InstallationDate: Installed on 2012-03-03 (780 days ago) InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1) SourcePackage: unity UpgradeStatus: Upgraded to trusty on 2013-10-18 (186 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/1311316/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp