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Xorg でモニタのスリープを無効にする

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デフォルトだと操作しない時間が10分続くとモニタがスリープしてしまう。
これを無効化するには /etc/X11/xorg.conf または /etc/X11/xorg.conf.d/15-monitor.conf のようなファイルに

/etc/X11/xorg.conf.d/15-monitor.conf
Section "ServerFlags"
  Option "BlankTime" "0"
  Option "StandbyTime" "0"
  Option "SuspendTime" "0"
  Option "OffTime" "0"
EndSection

と設定する。X を再起動すれば反映される。
スリープまでの時間を調整したい場合は、これらの値を "0" 以外にすればいい (単位は分)。

確認

xset q で確認できる。

% xset q
(snip)
Screen Saver:
  prefer blanking:  yes    allow exposures:  yes
  timeout:  0    cycle:  600
(snip)
DPMS (Energy Star):
  Standby: 0    Suspend: 0    Off: 0
  DPMS is Enabled
  Monitor is On

SEE ALSO

xorg.conf(5)

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