On dual monitor setup, lock screen password prompt doesn't always appear on same monitor.

[Adam Kleiner]

I have a laptop running Ubuntu 11.10 (stock setup for the most part) with an external monitor hooked up to it. I always lock the screen before leaving my computer unattended, but when I return, the password prompt sometimes shows up on the secondary monitor instead of the primary one. I'd say it does this roughly 50% of the time.

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

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[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[alf (krytoslaw+launchpad)]

Also affects 12.04

[Damir Butmir (d4m1r2)]

100% confirmed, although slightly varied in my case....

I no longer get the login password prompt on BOTH my monitors. Only on my primary one (laptop) and not on my external Samsung monitor. Before, I would get the password prompt on both, log in, and Ubuntu would correctly remember that I want my laptop screen disabled and picture only shown on my external monitor. Now, at the LightDM login screen, I get a weird rendered purple screen that only even completes rendering (refreshes and displays correctly) when I move my mouse within my external monitor. And even then, it just shows the default wallpaper with an Ubuntu icon in the background and NO password prompt.

Ubuntu 12.04 LTS x64

Linux damir-macbook 3.13.0-36-generic #63~precise1-Ubuntu SMP Thu Sep 4 22:28:20 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux