~25% of the time, some monitors don't wake from sleep

[PeterGrace]

I'm not sure if this is an issue with cosmic-idle or some other piece of cosmic. When I wake the system from monitors-idle (I don't use standby or sleep, just monitor turn-off) there's about a 25% chance that one or more of my monitors will fail to wake up.

The only way I've found to recover from this is to logout and log back in, I assume this causes the compositor to restart.

[ids1024]

Any input event should re-enable outputs. pop-os/cosmic-comp#741 does that internally as a fail-safe so even if a client like cosmic-idle wasn't working properly, monitors should still turn on.

So I guess it's a cosmic-comp issue. But odd. Does turning the monitor off and on fix it? I wonder if anything is logged to journalctl by cosmic-comp, or if there are any drm driver errors of dmesg.

[PeterGrace]

Does turning the monitor off and on fix it?

I just tried it and indeed yes, if you power off the monitor and then turn it back on, it comes up -- maybe its an issue with the monitor? They're amazon-house sceptre brand so who knows how well they adhere to standards.

[ids1024]

It's definitely possible that the monitor is doing something wrong. But if this issue happens on cosmic-comp and not other desktops, there must be something we're doing differently.