Today, it's elected to be plain blue - instead of mosaic/collage. :-) Interestingly this happens when choosing "Suspend" from a logged in session. If I lock the screen (to the "Switch user" screen) and select suspend, then resume is all fine.
My graphics card is: jhb@ThinkPad-W510:~$ lspci | grep -i vga 01:00.0 VGA compatible controller: NVIDIA Corporation GT216GLM [Quadro FX 880M] (rev a2) (standard for a Lenovo Thinkpad w510) ** Attachment added: ""Lock screen"" https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1509809/+attachment/4506834/+files/2015-10-27%2018.09.00.jpg -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1509809 Title: Login screen is scrambled after resuming from sleep, not displaying inputs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1509809/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs