sleep mode from console?

Rhatlinux · 04-02-2006, 06:22 PM

"echo mem > /sys/power/state" works well from X, but from the console it locks up. Is there any way to fix this?

cyber-worx · 04-02-2006, 06:28 PM

its most likely the tty thats hanging for some odd reason.

2 possible fixes,

a) If you can, ssh into your computer for another, and issue the command, in the case that the tty would ordinarily lock up you should still have access to the system and therfore the error logs.
b) You may want to try booting up without any special frame buffer support.

Hope this helps
-Rob

Rhatlinux · 04-02-2006, 06:52 PM

It sleeps just fine, but when resume from sleep mode, the screen is blank. I sshed into my box when it was blank and it still worked. I do not have any special framebuffer support enabled.

cyber-worx · 04-03-2006, 05:36 AM

When you say screen, do you mean laptop screen?

If thats true is it a newer, possibly dell? Intel based?

Anyhoo, its usually an easy fix, whack this in a script and run it when you want the screen to wake up:

Code:

#!/bin/sh
LID_STATE="/proc/acpi/button/lid/LID/state"
LCD_STATE="/proc/acpi/video/VID/LCD/state"

grep -q open $LID_STATE

if [ $? -eq 0 ]; then
        echo 0x80000001 > $LCD_STATE
fi

grep -q closed $LID_STATE

if [ $? -eq 0 ]; then
        echo "mem" > /sys/power/state
fi

OR

You could ssh into your now awake (but blank) box and type

Code:

echo "0x80000001" > /proc/acpi/video/VID/LCD/state

If that works id be happy to show you how to tie it in with acpid so it happens automagically.

Regards
Rob

Rhatlinux · 04-04-2006, 10:05 AM

This is a Dell Inspiron 600m laptop.

Code:

echo "0x80000001" > /proc/acpi/video/VID/LCD/state

My screen was still blank after entering the preceding command.

Here is what /proc/acpi/video/VID/LCD/state currently displays:

Code:

# cat /proc/acpi/video/VID/LCD/state
state:     0x0f
query:     0x01

cyber-worx · 04-04-2006, 10:15 AM

Try This
http://www.hep.phy.cam.ac.uk/~anders...titude600.html

Cheers
-Rob

Rhatlinux · 04-04-2006, 11:21 AM

That is not going to work for me. /etc/acpi does not exist.

cyber-worx · 04-04-2006, 12:23 PM

Well then I think you found a big part of your problem.

Sort ACPI out first :P

Hint: Kernel Configuration

Cheers
Rob

Rhatlinux · 04-04-2006, 03:18 PM

I already have ACPI enabled in the kernel.

cyber-worx · 04-05-2006, 05:11 PM

Fair enough, but do you have any userland tools for it?

ie acpid?

Rhatlinux · 04-06-2006, 09:30 PM

I do not have any tools installed. I thought acpid was unnecessary with newer kernels. I have the kernel 2.6.16 installed.