From 7d5e669c4b12895da37e96156646c48d71def4ce Mon Sep 17 00:00:00 2001
From: Francis Rowe <info@gluglug.org.uk>
Date: Sat, 20 Jun 2015 11:04:43 -0400
Subject: docs/misc/index.html: Notes about power management beeps

---
(limited to 'docs/misc/index.html')

diff --git a/docs/misc/index.html b/docs/misc/index.html
index 06db147..f0cf4ed 100644
--- a/docs/misc/index.html
+++ b/docs/misc/index.html
@@ -22,6 +22,7 @@
 				<li><a href="#trisquel7_powertop">High Pitched Whining Noise on Idle (how to remove in Trisquel 7)</a></li>
 				<li><a href="#high_pitch_parabola">High Pitched Whining Noise on Idle (how to remove in Parabola)</a></li>
 				<li><a href="#serial">X60/T60: Serial port - how to use (for dock owners)</a></li>
+				<li><a href="#powerbeeps">Power Management Beeps on Thinkpads</a></li>
 				<li><a href="patch.html">Using diff and patch</a></li>
 				<li><a href="#get_edid_panelname">Get EDID: Find out the name (model) of your LCD panel</a></li>
 			</ul>
@@ -132,6 +133,31 @@ WantedBy=multi-user.target
 			
 	</div>
 
+	<div class="section" id="powerbeeps">
+		
+		<h1>Power Management Beeps on Thinkpads</h1>
+
+			<p>
+				When disconnecting or connecting the charger, a beep occurs.
+				When the battery goes to a critically low charge level,
+				a beep occurs. Nvramtool is included in libreboot, and can
+				be used to enable or disable this behaviour.
+			</p>
+
+			<p>
+				Disable or enable beeps when removing/adding the charger:<br/>
+				$ <b>sudo ./nvramtool -w power_management_beeps=Enable</b><br/>
+				$ <b>sudo ./nvramtool -w power_management_beeps=Disable</b>
+			</p>
+
+			<p>
+				Disable or enable beeps when battery is low:<br/>
+				$ <b>sudo ./nvramtool -w low_battery_beep=Enable</b><br/>
+				$ <b>sudo ./nvramtool -w low_battery_beep=Disable</b>
+			</p>
+		
+	</div>
+
 	<div class="section">
 
 		<h1 id="get_edid_panelname">Get EDID: Find out the name (model) of your LCD panel</h1>
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