Comment 34 for bug 41994

I have a pretty much similar problem. Though the laptop screen just turns straight back on again without even waiting for me to hit the keyboard.

I have a Dell D520 on a docking station. I turn it on with the lid closed and use the external keyboard and screen. It was with some dismay I noticed that the screen has been on for hours on end, explains why the laptop screen is a bit dull now, it's aged.

So I turned it on with a bit of cardboard holding the lid button down. It boots with the laptop screen off, the external on. Right up until X (gdm login) gets going the laptop screen is off ... but then, on it goes.

I tried the script above in /etc/acpi/local ... I did not have a local dir (running Ubuntu 8.04 and keeping it up to date) so I created one. No joy. No idea why.

In the meantime I have lifted the lid (so I can see - no longer "trust" ubuntu on this) inserted cardboard on the button and manually run the xrandr --ouput LVDS --off in a shell. This works.

this is the lshal -m output at the moment

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having manually (xrandr) fixed the prob, external:on laplcd:off

remove cardboard from lid switch (open the lid)

15:11:41.626: computer_logicaldev_input condition ButtonPressed = switch-videomode
15:11:41.629: computer_logicaldev_input_3 property button.state.value = false
15:11:41.632: computer_logicaldev_input_3 condition ButtonPressed = lid
15:11:41.787: platform_i8042_i8042_KBD_port_logicaldev_input condition ButtonPressed = switch-videomode

both screens on ... fine

replace cardboard (close the lid)

15:11:53.464: computer_logicaldev_input condition ButtonPressed = switch-videomode
15:11:53.475: computer_logicaldev_input_3 property button.state.value = true
15:11:53.476: computer_logicaldev_input_3 condition ButtonPressed = lid
15:11:53.632: platform_i8042_i8042_KBD_port_logicaldev_input condition ButtonPressed = switch-videomode

both screens on ... bother

xrandr --output LVDS --off

laplcd:off ... good