I'm new to the Ubuntu community, however I just experienced this behavior from Unity. However in my case I didn't have to fully suspend the computer. In my case Ubuntu put my monitor into power save mode. When I moved my mouse to wake my screen back up I was at the lock screen, clicked into the password box (currsor appeared) and began to type, nothing was being entered. I clicked the control icon in the top right then back into the password entry field, it began to recognize characters and let me back into my session. Once I was in I saw it had put my password into my last clicked on text entry box (a Facebook chat). Definitely a security risk. The other applications I had open were terminal (ssh'd into a server), document viewer (pdf), & had an audio stream playing in a flash based player. I've only been using Ubuntu for about a week and this is the first time I experienced this issue. The only recent (past couple days) I made was installing flash player. Just sharing my experience in case it's of any help.
-- 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/1311403 Title: Can't type password after resume. Status in Unity: Confirmed Status in “unity” package in Ubuntu: Confirmed Bug description: I couldn't type password after resume - no characters displayed this time. I had to Ctrl+alt+f2 and service lightdm restart. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: lightdm 1.10.0-0ubuntu3 ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 ApportVersion: 2.14.1-0ubuntu3 Architecture: amd64 Date: Tue Apr 22 17:37:49 2014 EcryptfsInUse: Yes InstallationDate: Installed on 2013-11-23 (150 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) ProcEnviron: TERM=linux PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: lightdm UpgradeStatus: Upgraded to trusty on 2014-04-19 (3 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/1311403/+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