Gentoo Forums :: View topic - Unable to turn off LCD on Dell C640 on standby with ACPI

Unable to turn off LCD on Dell C640 on standby with ACPI

View unanswered posts
View posts from last 24 hours

Gentoo Forums Forum Index

Kernel & Hardware

View previous topic :: View next topic

Author

Message

raulpober
n00b
n00b

Joined: 26 Oct 2006
Posts: 36

Posted: Fri Nov 10, 2006 9:32 am Post subject: Unable to turn off LCD on Dell C640 on standby with ACPI

Hello,

I have a rather peculiar issue with my Dell C640 Laptop. When I issue the command:

Code:

echo -n standby > /sys/power/state

the laptop enters standby mode, yet the LCD screen remains blank, but on. If I issue the command:

Code:

/usr/sbin/radeontool light off

The LCD does turn off. However, once the LCD is off, if I tell the machine to go into standby, the screen turns on.

The graphics card is:

ATI Technologies Inc Radeon Mobility M7 LW [Radeon Mobility 7500]

I would really like to be able to put the machine in standby and have the monitor turn off. Any ideas on things I should try? Thanks!

Display posts from previous:

	Gentoo Forums Forum Index Kernel & Hardware	All times are GMT
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

Copyright 2001-2025 Gentoo Foundation, Inc. Designed by Kyle Manna © 2003; Style derived from original subSilver theme. | Hosting by Gossamer Threads Inc. © | Powered by phpBB 2.0.23-gentoo-p11 © 2001, 2002 phpBB Group
Privacy Policy