LCD stays off on lid open

[Fulko.Hew at sita.aero]

fedora-test-list-bounces at redhat.com wrote on 11/26/2006 11:11:26 PM:

> For maybe around a week now, my laptop's does not turn back on when
> I open the lid.  I can be logged in or at the gdm screen, but
> closing the laptop lid permanently blanks my screen.  I have set all
> my gnome-power-manager options never to shut off the screen or
> perform any action on a lid close.
>
> I have a Dell Latitude D610 with an Intel 915GM/GMS/910GML
> (according to lspci), which uses the i810 video driver.
>
> FWIW, using the xset dpms force off does blank the screen, but it
> successfully turns back on when I move the mouse.
>
> Any ideas?

Yes.  I think I have the same issue with my Dell Inspiron 6400 (aka 1505?)
I googled the world and found someone (at U of T) with a solution that
worked for me. (sorry, I can't rememeber the url and I didn'w write it
down, but here it is from my notes:

 a) you need an ACPI events file to capture the lidswitch activity,
 b) a script to run when triggered to turn the light back on.

(Don't forget to mark lidswitch.sh as executable.)

1/ Add the file:  /etc/acpi/events/lidswitch

# /etc/acpi/events/lidswitch
# This is called when the lid is closed or opened and calls
# /etc/acpi/lidswitch.sh for further processing.

event=button[ /]lid
action=/etc/acpi/lidswitch.sh


2/ Add the file /etc/acpi/lidswitch.sh

#!/bin/sh
# /etc/acpi/lidswitch.sh
# Re-activates the screen when the lid is opened again

LID_STATE="/proc/acpi/button/lid/LID/state"
LCD_STATE="/proc/acpi/video/VID/LCD/state"
VT_NR=/tmp/lid_sh

if [ -e /tmp/acpi_sleep ]; then
      rm /tmp/acpi_sleep
      exit
fi

grep -q open "$LID_STATE"
if [ $? -eq 0 ]; then               # open the lid
      vbetool dpms on

      if [ -e "$VT_NR" ]; then      # we closed the lid in X
            chvt $(cat $VT_NR)
            rm -f "$VT_NR"
      fi
else                                # closing the lid
      echo $(fgconsole) > $VT_NR    # remember the current vt
      chvt 1
fi



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