+1 I am hitting the exact same issue as in the question and mentioned by dave brandy
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-screensaver in Ubuntu. https://bugs.launchpad.net/bugs/45018 Title: Unlock screen is invisible with Nvidia twinview Status in GNOME Screensaver: Fix Released Status in “gnome-screensaver” package in Ubuntu: Confirmed Bug description: Binary package hint: gnome-screensaver This bug may equally be an issue with the Nvidia GLX drivers or Xorg. When my laptop is configured with the following excerpt from xorg.conf, the gnome-screensaver unlock dialog does not appear. I haven't tested if the dialog box appears if a second monitor/projector is connected. Further symptoms include two screensavers seeming to run at the same time, sometimes one screensaver briefly appears over the top of the other. # Begin xorg.conf Section "Device" Identifier "NVIDIA Corporation NVIDIA Default Card" Driver "nvidia" BusID "PCI:1:0:0" Option "RenderAccel" "true" Option "Coolbits" "1" Option "ConnectedMonitor" "DFP,CRT" Option "TwinView" "1" Option "Metamodes" "1280x800,1280x800; 800x600,800x600; 1280x800,NULL" Option "UseEdidFreqs" "true" Option "SecondMonitorHorizSync" "30-96" Option "SecondMonitorVertRefresh" "50-160" Option "TwinViewOrientation" "Clone" EndSection # End xorg.conf I have disabled the ConnectedMonitor Option and all below it as a workaround while I do not have a second monitor connected. To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-screensaver/+bug/45018/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
