Public bug reported:
I am running a dual monitor desktop. After I lock the system the screens
go dark and then sleep. However at some point (minutes, hours?) one of
the screens re-awakes and displays a broken version of the lock screen
(Ubuntu logo in center, version towards the bottom). The stays displayed
indefinitely until I login.
I'm running Ubuntu 16.10 (installed, not an upgrade) on a desktop.
Monitors are both Samsung SyncMasters 2443's and video card is "NVIDIA
Corporation GF108 [GeForce GT 430]". The Primary (left) is plugged in
via DVI while secondary (right) is plugged in via VGA. Resolution is
1920x1200 on both.
The "bad" screen is distorted from the normal lock screen in that:
(a) It is not centered
(b) It is a darker blue than my actual screen background (that I see right
after locking)
(c) There is a white grid of dots
(d) the is a black line across the screen level with the Ubuntu version.
See attach photo.
Expected behavior: Screen stays turned off.
I previously had 16.04 on this machine, did not have this problem.
Description: Ubuntu 16.10
Release: 16.10
gnome-screensaver:
Installed: 3.6.1-7ubuntu5
Candidate: 3.6.1-7ubuntu5
Version table:
*** 3.6.1-7ubuntu5 500
500 http://nz.archive.ubuntu.com/ubuntu yakkety/main amd64 Packages
100 /var/lib/dpkg/status
** Affects: gnome-screensaver (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "Photo of screens showing problem."
https://bugs.launchpad.net/bugs/1644149/+attachment/4781956/+files/IMG_20161123_223111.jpg
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https://bugs.launchpad.net/bugs/1644149
Title:
Sleeping monitor rewakes and displays broken version of lock page
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