Screensaver quit working?

Screensaver quit working?

I have a box running Kali with the MATE desktop. I just switched to a new wiiiiiide monitor, and my screensaver no longer kicks in, ever.

I have tried refreshing its settings, etc. If I invoke it manually with Super+L it starts. But it never powers off the monitor.

What could cause this? What else might I try to at least isolate the cause?

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2 comments

Just for fun, restart your machine or at least log out and restart your login manager.
- @orcrist done multiple restarts since adding the new monitor - no change