[ltp] Re: RFC: removal of video output switching from thinkpad-acpi

[Elias Oltmanns]

Henrique de Moraes Holschuh <hmh@hmh.eng.br> wrote:
> On Tue, 19 Feb 2008, Paul Fox wrote:
>> henrique de moraes holschuh wrote:
[...]
>>  > The question is: does the video output stuff in thinkpad-acpi works well
>>  > enough in the X41 to justify its continued existence?
>> 
>> well, it at least lets me switch from one screen to the other
>> with video_switch.  i know of no other way to enable the CRT.
>> is there?

As I found out only this weekend, there is (on my X40 at least). If I
mask this hotkey, so thinkpad-acpi won't handle it, and if I prevent my
system from loading the video module, then I can switch to and from CRT.
Mind you, there is no way to enable CRT and LCD at the same time.

>
> ACPI video, in some thinkpads. But since most ACPI firmwares are
>completely
> and utterly broken on that area, upstream removed that function from ACPI
> video very recently.
>
> It looks like I will have to work on thinkpad-acpi video control, and port
> it to sysfs :(

Well, I for one would greatly appreciate that since I use scripts for
automated video switching on a regular basis.

Regards,

Elias