Sam Varshavchik writes:
On Tue, 2015-12-29 at 08:19 -0500, Sam Varshavchik wrote: > At some point recently, my monitor stopped getting turned off after > the > prescribed period of inactivity. I'm using the XFCE power manager, > and its > settings remain untouched. > > Manually executing "xset dpms force off" turns the monitor off > normally. > "xset q" shows that everything appears to be in order: > > DPMS (Energy Star): > Standby: 300 Suspend: 360 Off: 420 > DPMS is Enabled > Monitor is On > > So, what else can I check? I doubt this is your issue, but just in case... Does it only fail to do the "Off" part or is it not doing any of the three?It wasn't doing anything at all.
Ok, this problem kept popping up occasionally, and I've been able to do some additional digging.
It appears that after a reboot, DPMS is off. After a reboot, "xset dpms q" shows:
DPMS (Energy Star): Standby: 360 Suspend: 0 Off: 420 DPMS is DisabledAnd after I issue a manual "xset dpms force off", then bring the display back up:
DPMS (Energy Star): Standby: 360 Suspend: 0 Off: 420 DPMS is Enabled Monitor is On So, the issue is that after a reboot, DPMS is off by default.
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