Launchpad has imported 2 comments from the remote bug at https://bugs.kde.org/show_bug.cgi?id=329375.
If you reply to an imported comment from within Launchpad, your comment will be sent to the remote bug automatically. Read more about Launchpad's inter-bugtracker facilities at https://help.launchpad.net/InterBugTracking. ------------------------------------------------------------------------ On 2013-12-29T17:30:58+00:00 Kde-1 wrote: When using multiple X screens (3 in this case), kscreenlocker-greet behaves very badly and insecurely. It appears to be drawing the desktop background image/screensaver images for all three X screens to the primary screen (0) and doesn't blank/screensave the monitors belonging to screens 1 and 2 (which leaves their contents in view), and it displays 2, maybe 3 greeter dialogs (1 may be hidden) on the primary X screen, but only accepts typed password input in 1 of them (the primary X screen's dialog). Reading the source-code at ksmserver/screenlocker/greeter/greeterapp.cpp::UnlockApp::desktopResized() it appears to iterate the screens via desktop()->screenCount() but assumes there is only one X display when showing the ScreenSaverWindow. Reproducible: Always Steps to Reproduce: 1. Configure multiple X screens 2. Lock Actual Results: All background images and screensavers are drawn to X screen 0 Expected Results: Each background image and screensaver should be rendered on the correct X screen I'm testing a possible fix which passes display()->screen(i) to the QDeclarativeView constructor. Photographs of the screens are attached to the referenced Ubuntu bug report #1264821. Reply at: https://bugs.launchpad.net/ubuntu/+source/kde- workspace/+bug/1264821/comments/4 ------------------------------------------------------------------------ On 2013-12-31T18:12:34+00:00 Kde-1 wrote: Created attachment 84383 Render background and greeter on correct X screen This patch is for version up to 4.11.4. The re-factoring for Plasma 2 needs a little more research since it replaces QDeclarativeView with a QQuickView, but the same solution (passing QApplication->display()->screen(i)v) looks to be doable if the QWidget is exchangeable for the QWindow in the QQuickView constructor. Reply at: https://bugs.launchpad.net/ubuntu/+source/kde- workspace/+bug/1264821/comments/9 ** Changed in: kdebase-workspace Status: Unknown => New ** Changed in: kdebase-workspace Importance: Unknown => High -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to kde-workspace in Ubuntu. https://bugs.launchpad.net/bugs/1264821 Title: kscreenlock_greet insecure with multiple X screens To manage notifications about this bug go to: https://bugs.launchpad.net/kdebase-workspace/+bug/1264821/+subscriptions -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
