** Attachment added: "i'm spyin' on ur googls!" http://launchpadlibrarian.net/35113770/broken-lock-2.jpg
** Description changed: Sometimes when the screen is locked and I press a key to unlock it, I see my entire desktop and open windows under the password dialog box. That's a security problem. I believe this is a compositing / video memory issue, because of the following factors: + 1.) It is intermittent, but occurs most when the screen is "busy" (lots of graphics-heavy windows open). - 2.) I can almost always reproduce it by doing something video-intensive, such as x11perf. - 3.) Sometimes everything will be visible except that one or two windows, or the "active" portions thereof, will be blacked out. - 4.) I have seen other compositing / video memory glitches, such as the contents of a previously closed window appearing briefly in a newly opened window before it completes drawing (another security issue in its own right). - 5.) The desktop is shown as it appeared when the screen was locked, and does not update while locked. - 6.) I am unable to reproduce the issue with compositing ("desktop effects") disabled. - Note that the desktop is not dimmed; it is visible for as long as you - want to stare at it, even after the password prompt has disappeared; and - I am using dualhead and both screens are visible, so this is not a - duplicate of #390989 or #385102 or #417722, though it is probably - related. I have attached a screenshot (acquired via VNC) demonstrating - the problem. + 2.) I can almost always reproduce it by doing something video-intensive, + such as x11perf. + + 3.) Sometimes everything will be visible except that one or two windows, + or the "active" portions thereof, will be blacked out. + + 4.) I have seen other compositing / video memory glitches, such as the + contents of a previously closed window appearing briefly in a newly + opened window before it completes drawing (another security issue in its + own right). + + 5.) The desktop is shown as it appeared when the screen was locked, and + does not update while locked. + + 6.) I am unable to reproduce the issue with compositing ("desktop + effects") disabled. + + + Note that the desktop is not dimmed; it is visible for as long as you want to stare at it, even after the password prompt has disappeared; and I am using dualhead and both screens are visible, so this is not a duplicate of #390989 or #385102 or #417722, though it is probably related. I have attached two screenshots (acquired via VNC) demonstrating the problem. I'm running Kubuntu 9.04 x86-64 with all updates, using the NVidia 180.44 binary driver with TwinView on a GeForce 8400 GS. -- Desktop visible when screen is locked in Kubuntu https://bugs.launchpad.net/bugs/474654 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs