** Description changed: - This appears to be a regression in 14.10 sometime in September 2014. - - The behavior appears similar to this bug from 2011: - https://bugs.launchpad.net/unity-2d/+bug/830348 + [Impact] On resume from suspend, screen contents are displayed for a brief time (perhaps 0.5 to 1 sec) before the lock dialog appears. These screen contents are not always the desktop or open application beneath the lock screen. On at least one occasion, the screen showed content from a full-screen video that had been playing in Firefox some time before the computer had been suspended: neither the video nor its underlying tab were open anymore, so the image(s) was likely part of a buffer somewhere. (Needless to say, if the wrong full-screen video had been watched, depending on the setting, this could be a quite serious issue for some users). - I have not exhaustively tested conditions in which this appears. - However, just now, the bug did not appear when keeping the lid open, - suspending, and then resuming with the power button. + [Test Case] - But when suspending from menu, closing the lid, then opening the lid and - moving the mouse, the screen displayed contents before showing the lock - dialog. The image displayed was of the desktop (with this bug reporting - window) and showed the "suspend" item in the power menu being - highlighted/clicked. + Suspend and resume the computer (closing the lid or using the session + indicator). Since this problem involves a race condition, it is not + reliably reproducable at will. - ProblemType: Bug - DistroRelease: Ubuntu 14.10 - Package: unity 7.3.1+14.10.20140915-0ubuntu1 - ProcVersionSignature: Ubuntu 3.16.0-18.25-generic 3.16.3 - Uname: Linux 3.16.0-18-generic x86_64 - ApportVersion: 2.14.7-0ubuntu2 - Architecture: amd64 - CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' - CurrentDesktop: Unity - Date: Mon Sep 29 08:38:57 2014 - InstallationDate: Installed on 2014-08-10 (50 days ago) - InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) - SourcePackage: unity - UpgradeStatus: Upgraded to utopic on 2014-08-10 (50 days ago) + [Regression Potential] + + This fix unmaps windows when a suspend or shutdown event occurs: it is + possible that the window(s) do not get remapped when a wake event + occurs, or the wake even does not get propagated. This does not appear + to occur in practice. + + [Other Info] + + The Ubuntu 14.04 LTS SRU was cherry-picked from upstream Unity where it + has been released in the Ubuntu "Vivid Vervet" development release for a + couple of months with no apparent regressions.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1375271 Title: desktop or other past screen contents visible before lockscreen on resume To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-screensaver/+bug/1375271/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
