Re: vald on a Toshiba P3440 (success..)

["Martin S. Weber" <Ephaeton%gmx.net@localhost>]

On Fri, Jan 25, 2008 at 08:51:07PM +0100, Martin S. Weber wrote:
> (...)
> The only thing is a minor nuisance with Fn+F6/F7, when the backlight
> is out it takes too many Fn+F7s to turn it back on again but a
> VALD_ACPI_DEBUG will tell me more I hope.

Here is what VALD_ACPI_DEBUG told me:


Fn+F7:

vald0: received ValdStatusChanged message.
vald0: System Event 141
vald0: received ValdStatusChanged message.
vald0: System Event 1c1
LCD bright up
acpi_libright_set: Set brightness to 100%
vald0: received ValdStatusChanged message.
vald0: System Event 100

Fn+F6

vald0: received ValdStatusChanged message.
vald0: System Event 140
vald0: received ValdStatusChanged message.
vald0: System Event 1c0
LCD bright down
acpi_libright_set: Set brightness to 80%
vald0: received ValdStatusChanged message.
vald0: System Event 100

Fn+F6

vald0: received ValdStatusChanged message.
vald0: System Event 140
vald0: received ValdStatusChanged message.
vald0: System Event 1c0
LCD bright down
acpi_libright_set: Set brightness to 50%
vald0: received ValdStatusChanged message.
vald0: System Event 100

Fn+F6

vald0: received ValdStatusChanged message.
vald0: System Event 140
vald0: received ValdStatusChanged message.
vald0: System Event 1c0
LCD bright down
acpi_libright_set: Set brightness to 30%
vald0: received ValdStatusChanged message.
vald0: System Event 100

Fn+F6

vald0: received ValdStatusChanged message.
vald0: System Event 140
vald0: received ValdStatusChanged message.
vald0: System Event 1c0
LCD bright down
acpi_libright_set: Set brightness to 10%
vald0: received ValdStatusChanged message.
vald0: System Event 100

Fn+F6

vald0: received ValdStatusChanged message.
vald0: System Event 140
vald0: received ValdStatusChanged message.
vald0: System Event 1c0
LCD bright down
acpi_libright_set: Set brightness to 0%
vald0: received ValdStatusChanged message.
vald0: System Event 100

 ... Fine, here the backlight goes out.

Now I try hitting Fn+F7 again to bring it back on. I hit it
11 times. Output:

11 x : {
  vald0: received ValdStatusChanged message.
  vald0: System Event 141
  vald0: received ValdStatusChanged message.
  vald0: System Event 1c1
  LCD bright up
  acpi_libright_set: Set brightness to 10%
  vald0: received ValdStatusChanged message.
  vald0: System Event 100
}

Then, #12 and #13 were obviously hit "too quick", followed
by #14:

vald0: System Event 141
vald0: received ValdStatusChanged message.
vald0: System Event 1c1
LCD bright up
acpi_libright_set: Set brightness to 10%
vald0: received ValdStatusChanged message.
vald0: System Event 141
vald0: received ValdStatusChanged message.
vald0: System Event 1c1
LCD bright up
acpi_libright_set: Set brightness to 30%
vald0: received ValdStatusChanged message.
vald0: System Event 141
vald0: received ValdStatusChanged message.
vald0: System Event 1c1
LCD bright up
acpi_libright_set: Set brightness to 10%


Note the lack of the final 'System Event 100'.

A few more buttonpresses:

vald0: received ValdStatusChanged message.
vald0: System Event 141
vald0: received ValdStatusChanged message.
vald0: System Event 1c1
LCD bright up
acpi_libright_set: Set brightness to 10%
vald0: received ValdStatusChanged message.
vald0: System Event 141
vald0: received ValdStatusChanged message.
vald0: System Event 1c1
LCD bright up
acpi_libright_set: Set brightness to 10%
vald0: received ValdStatusChanged message.
vald0: System Event 141
vald0: received ValdStatusChanged message.
vald0: System Event 1c1
LCD bright up
acpi_libright_set: Set brightness to 30%
vald0: received ValdStatusChanged message.
vald0: System Event 100
vald0: received ValdStatusChanged message.
vald0: System Event 141
vald0: received ValdStatusChanged message.
vald0: System Event 1c1
LCD bright up
acpi_libright_set: Set brightness to 10%
vald0: received ValdStatusChanged message.
vald0: System Event 100
vald0: received ValdStatusChanged message.
vald0: System Event 141
vald0: received ValdStatusChanged message.
vald0: System Event 1c1
LCD bright up
acpi_libright_set: Set brightness to 10%
vald0: received ValdStatusChanged message.
vald0: System Event 100
vald0: received ValdStatusChanged message.
vald0: System Event 141
vald0: received ValdStatusChanged message.
vald0: System Event 1c1
LCD bright up
acpi_libright_set: Set brightness to 10%
vald0: received ValdStatusChanged message.
vald0: System Event 100
vald0: received ValdStatusChanged message.
vald0: System Event 141
vald0: received ValdStatusChanged message.
vald0: System Event 1c1
LCD bright up
acpi_libright_set: Set brightness to 10%
vald0: received ValdStatusChanged message.
vald0: System Event 141
vald0: received ValdStatusChanged message.
vald0: System Event 1c1
LCD bright up
acpi_libright_set: Set brightness to 30%
vald0: received ValdStatusChanged message.
vald0: System Event 141
vald0: received ValdStatusChanged message.
vald0: System Event 1c1
LCD bright up
acpi_libright_set: Set brightness to 10%
vald0: received ValdStatusChanged message.
vald0: System Event 100

And finally, at this point the backlight goes back on. It seems not
enough to try to turn it on by going from 0% light to 10% light.
ISTM you gotta hit it 'quick enough' to fake it into believing it's
going from 10% to 30%; then finally it's going on again.

-Martin