Bug 41853

Summary:	Input events cause backlight to turn on when laptop lid is closed
Product:	xorg	Reporter:	Ben S. <benshadwick>
Component:	Server/General	Assignee:	Xorg Project Team <xorg-team>
Status:	RESOLVED INVALID	QA Contact:	Xorg Project Team <xorg-team>
Severity:	normal
Priority:	medium	CC:	benshadwick, jeremyhu
Version:	7.6 (2010.12)
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
URL:	https://bugs.launchpad.net/ubuntu/+source/x11-xserver-utils/+bug/41994
Whiteboard:	2011BRB_Reviewed
i915 platform:		i915 features:

Description Ben S. 2011-10-16 21:19:38 UTC

I've observed this issue with acpid/acpi-support, gnome-power-manager and xfce4-power-manager in Ubuntu 11.04 and Xubuntu 11.04 and 11.10, so I'm thinking that it might be an xorg issue.

After running 'xset dpms force off' with lid closed on a laptop to disable the backlight, moving the mouse or touching the keyboard will cause the backlight to turn back on. The backlight should never turn on under any circumstances when the lid is closed, unless maybe in the case that the user runs 'xset dpms force on' explicitly.

Corresponding Ubuntu bug report is here: https://bugs.launchpad.net/ubuntu/+source/x11-xserver-utils/+bug/41994

Comment 1 Jeremy Huddleston Sequoia 2011-10-16 23:04:54 UTC

This is not a bug with xset, moving to server component.

Sounds more like an ACPI bug to me, but I'm not very familiar with that side of 
the fence.

Comment 2 Adam Jackson 2018-06-12 18:44:07 UTC

Mass closure: This bug has been untouched for more than six years, and is not obviously still valid. Please file a new report if you continue to experience issues with a current server.

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