On Thu, Apr 13, 2017 at 12:03 PM, Jamie Zawinski <j...@jwz.org> wrote: > Is the screen completely black? Do you have xscreensaver configured to be > black-only or is it running savers? If you are not running savers, try doing > that, > to see if, when it is in this "invisible" mode, there are any pixels visible > at all.
I was configured "Blank Screen Only". The screen was completely black except for my mouse cursor. I tried running with a screensaver. Only the dialog area appears black in this case. The screensaver freezes while the dialog is active. If I press Esc the screensaver continues. Then the dialog appears correctly if activated again by mouse movement. This is at least a workaround if I need to see the dialog's state. It seemed I was able to trigger the blank dialog more easily with a screensaver enabled (4/4 tries), but only when I suspended and woke via lid switch. Triggering the invisible dialog also requires mouse/key activity very quickly after waking. If I give time for the screensaver to start running then the dialog displays normally. I was not able to reproduce when suspending with a hotkey and waking via power button.
