LCD stays off on lid open

[Fulko.Hew at sita.aero]

"Moshe Jacobson" <moshe at runslinux.net> wrote on 11/27/2006 10:07:53 AM:

> Thanks for the response.  It seems like this is a bug that shoud be
> addressed.

I agree.  Although I am currently using FC5,
I have the same issue with FC6.


> But I just today tried setting it to "blank screen" when
> I closed the lid, and now when I close and open it, it does
> successfully reset the display.


But on my FC5 machine (after an RPM update about a month ago, I find
that (no matter what screen saver you have configured)(I normally
use a blank screen) that something within the 'system' doesn't
behave properly.

What I've seen/found-out is that using the following sample
configuration timeouts in KDE Control Center:

Appearances->Screen saver->Start after:                  5 min
Display->power control->Enable Display Power management: On
Display->power control->Standby:                         6 min
Display->power control->Suspend After:                   7 min
Display->power control->Power Off after:                 7 min

What I see is that the screen saver _does_ kick in at 5 minutes, _but_
at 6 minutes, I get either a blank screen or worse,
I see a 'big X' (ie. X Window 'X') on the screen and the screen is
now not-blank, and the display doesn't ever power down.

And I'm pretty sure that even when I get the blank screen,
the backlight still never gets turned off.
The only way to get the backlight off is to close the lid.



> On 11/27/06, Fulko.Hew at sita.aero <Fulko.Hew at sita.aero > wrote:
>
> 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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