Suspending or Shutting down When Set Not To

[johny why]

Mint 17.2 xfce

it appears that my mint is suspending when plugged in, or not restoring from suspend, or not powering down on battery.

i left the machine idle for about 6 hours. When i returned, all the power-up lights were still on. So i don't think it was suspended or powered down, just display off.

Moving the mouse and touching the keyboard did not bring up any display-- the screen stayed black. I could hear disk activity.

i waited about a minute, and that was too long to wait. I had to force power-down with the hard button.

Maybe it was not suspended, maybe the display was off and failed to turn back on.

on another occasion, when plugged in, the computer totally powered down after several hours.

see attached images. thx

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$ xset q
Keyboard Control:
  auto repeat: on key click percent: 0 LED mask: 00000002
  XKB indicators:
    00: Caps Lock: off 01: Num Lock: on 02: Scroll Lock: off
    03: Compose: off 04: Kana: off 05: Sleep: off
    06: Suspend: off 07: Mute: off 08: Misc: off
    09: Mail: off 10: Charging: off 11: Shift Lock: off
    12: Group 2: off 13: Mouse Keys: off
  auto repeat delay: 500 repeat rate: 20
  auto repeating keys: 00ffffffdffffbbf
                        fadfffefffedffff
                        9fffffffffffffff
                        fff7ffffffffffff
  bell percent: 50 bell pitch: 400 bell duration: 100
Pointer Control:
  acceleration: 2/1 threshold: 1
Screen Saver:
  prefer blanking: yes allow exposures: yes
  timeout: 0 cycle: 0
Colors:
  default colormap: 0x22 BlackPixel: 0x0 WhitePixel: 0xffffff
Font Path:
  /usr/share/fonts/X11/misc,/usr/share/fonts/X11/Type1,built-ins
DPMS (Energy Star):
  Standby: 0 Suspend: 0 Off: 0
  DPMS is Disabled
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[johny why (johnywhy)]

additional power settings

[johny why (johnywhy)]

power settings