From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Phil Endecott" <phil_hmpau_endecott@chezphil.org>
Subject: Re: Toggling VGA out on Eee 901
Date: Wed, 17 Sep 2008 22:08:57 +0100
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References: <71cd59b00809171247y74ae25b6h580fcf024f7d4575@mail.gmail.com>
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To: Corentin Chary <corentin.chary@gmail.com>
Cc: linux acpi <linux-acpi@vger.kernel.org>

Corentin Chary wrote:
> On Wed, Sep 17, 2008 at 9:31 PM, Phil Endecott
> <phil_hmpau_endecott@chezphil.org> wrote:
>> Corentin Chary wrote:
>>>
>>> you can try the "disp" file under /sys/device/platform/eeepc-laptop/
>>> Try echo 1, echo 0, etc ... It may do something
>>
>> Thanks for the suggestion.  It doesn't work, though I think it's trying to
>> do something.  The code for the "disp" file checks a capabilities bitmask in
>> which I think the DISPLAYSWITCH bit is set, and writes call a method called
>> SDSP, which eventually seems to do an I/O byte write (I think).  I'm well
>> out of my depth here so I'm going to move on to the next problem, but I'm
>> willing to try out any suggestions that people have.

> It may be like http://acpi4asus.sourceforge.net/README

>   To switch the displays, echo values from 0 to 15 to
>   /sys/devices/platform/asus-laptop/display. The significance of those values
>   is as follows:
>
>   +-------+-----+-----+-----+-----+-----+
>   | Bin   | Val | DVI | TV  | CRT | LCD |
>   +-------+-----+-----+-----+-----+-----+
>   + 0000  +   0 +     +     +     +     +
>   +-------+-----+-----+-----+-----+-----+
[snip]

Yes, I tried all these values (and a few hundred thousand more...) with 
no luck.  Thanks for the suggestion.


Phil.