New insights about video module! Need help,please.

New insights about video module! Need help,please.

[Tommy Ch.]

Hi,

I'm still trying to get tv-out and crt working on my Toshiba M30 not
using TwinView. It's a long time ago when John Belmonte told me to
experiment with the toshiba_acpi driver (?) like this:

------snip---------

Other than that, you can experiment with the driver as follows.  This
was given to me by one Jonny Robertson.

     write_acpi_int("\\_SB_.PCI0.PCI1.VGA_.LCD_._DSS", 0x1);
     write_acpi_int("\\_SB_.PCI0.PCI1.VGA_.CRT_._DSS", 0x0);
     write_acpi_int("\\_SB_.PCI0.PCI1.VGA_.TV__._DSS", 0x80000001L);

The path to the _DSS methods might be different on your machine.  In
this example, we enable the LCD and TV.  The 0x80000000 bit causes
pending changes to be executed, so that all outputs can be set
simultaneously.

------snipend-----------


I tried to modify toshiba_acpi.c at line 377 and made these changes:

-------snip------

if (new_video_out != video_out)
     // original line
     // write_acpi_int(METHOD_VIDEO_OUT, new_video_out);

     // new:
     write_acpi_int("\\_SB_.PCI0.PCI1.VGA_.LCD_._DSS", 0x1);
         write_acpi_int("\\_SB_.PCI0.PCI1.VGA_.CRT_._DSS", 0x0);
         write_acpi_int("\\_SB_.PCI0.PCI1.VGA_.TV__._DSS", 0x80000001L);

------snipend-----------

Is this correct? If yes, a
echo "tv_out:1" > /proc/acpi/toshiba/video
had no effect.

Of course I also tried the new video module in kernel 2.6.10. I tried to 
set TVout like this
echo 0x80000000 > /proc/acpi/video/VGA/TV/state
and also like this:
echo "state:0x0f" > /proc/acpi/video/VGA/TV/state

with no effect. But I just made discovery that might be important!
When running the modified toshiba_acpi and using
echo "tv_out:1" > /proc/acpi/toshiba/video
suddenly I get

cat /proc/acpi/video/VGA/TV/state
state:     0x0d
query:     0x01

"query" is 0x01 instead of 0x00. I don't know if this is important or 
helps you to help me to get the stuff working.

If it helps you, my dsdt is located at 
http://www.uni-koblenz.de/~tenshi/toshm30dsdt.tar.gz

Any help is greatly appreciated!

Bye,
  Tommy


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Re: New insights about video module! Need help,please.

[Bruno Ducrot]

On Mon, Feb 28, 2005 at 07:17:27PM +0100, Tommy Ch. wrote:
> Hi,
> 
> I'm still trying to get tv-out and crt working on my Toshiba M30 not
> using TwinView. It's a long time ago when John Belmonte told me to
> experiment with the toshiba_acpi driver (?) like this:
> 
> ------snip---------
> 
> Other than that, you can experiment with the driver as follows.  This
> was given to me by one Jonny Robertson.
> 
>     write_acpi_int("\\_SB_.PCI0.PCI1.VGA_.LCD_._DSS", 0x1);
>     write_acpi_int("\\_SB_.PCI0.PCI1.VGA_.CRT_._DSS", 0x0);
>     write_acpi_int("\\_SB_.PCI0.PCI1.VGA_.TV__._DSS", 0x80000001L);
> 
> The path to the _DSS methods might be different on your machine.  In
> this example, we enable the LCD and TV.  The 0x80000000 bit causes
> pending changes to be executed, so that all outputs can be set
> simultaneously.
> 

There are _PS0, _PS3 and _PCS methods.  I'm not sure if those methods are
supported under linux-2.6.10 (or any other version of Linux, btw).

I think you should try to call the \_SB_.PCI0.PCI1.VGA_._PS0 method
somewhere.

Add a line like this one:
	acpi_evaluate_object(NULL, "\\_SB_.PCI0.PCI1.VGA_._PS0", NULL, NULL);

in function acpi_video_bus_add()

Something like this:

before:
        if (!device)
		return_VALUE(-EINVAL);

	video = kmalloc(sizeof(struct acpi_video_bus), GFP_KERNEL);

after:
        if (!device)
		return_VALUE(-EINVAL);

	acpi_evaluate_object(NULL, "\\_SB_.PCI0.PCI1.VGA_._PS0", NULL, NULL);
	video = kmalloc(sizeof(struct acpi_video_bus), GFP_KERNEL);

Of course, its ugly, but its only to test if _PS0 is supported or not by
linux.

Hope this help,

-- 
Bruno Ducrot

--  Which is worse:  ignorance or apathy?
--  Don't know.  Don't care.


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Re: New insights about video module! Need help,please.

[Tommy Ch.]

Bruno Ducrot wrote:
> There are _PS0, _PS3 and _PCS methods.  I'm not sure if those methods are
> supported under linux-2.6.10 (or any other version of Linux, btw).
> 
> I think you should try to call the \_SB_.PCI0.PCI1.VGA_._PS0 method
> somewhere.
> 
> Add a line like this one:
> 	acpi_evaluate_object(NULL, "\\_SB_.PCI0.PCI1.VGA_._PS0", NULL, NULL);
> 
> in function acpi_video_bus_add()
> 
> Something like this:
> 
> before:
>         if (!device)
> 		return_VALUE(-EINVAL);
> 
> 	video = kmalloc(sizeof(struct acpi_video_bus), GFP_KERNEL);
> 
> after:
>         if (!device)
> 		return_VALUE(-EINVAL);
> 
> 	acpi_evaluate_object(NULL, "\\_SB_.PCI0.PCI1.VGA_._PS0", NULL, NULL);
> 	video = kmalloc(sizeof(struct acpi_video_bus), GFP_KERNEL);
> 
> Of course, its ugly, but its only to test if _PS0 is supported or not by
> linux.

OK, it compiled cleanly. After loading the module dmesg said:
ACPI: Video Device [VGA] (multi-head: yes  rom: yes  post: no)

Nothing else I could observe. Should I do any other tests?

Bye



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Re: New insights about video module! Need help,please.

[Bruno Ducrot]

On Fri, Mar 04, 2005 at 02:42:23PM +0100, Tommy Ch. wrote:
> Bruno Ducrot wrote:
> >There are _PS0, _PS3 and _PCS methods.  I'm not sure if those methods are
> >supported under linux-2.6.10 (or any other version of Linux, btw).
> >
> >I think you should try to call the \_SB_.PCI0.PCI1.VGA_._PS0 method
> >somewhere.
> >
> >Add a line like this one:
> >	acpi_evaluate_object(NULL, "\\_SB_.PCI0.PCI1.VGA_._PS0", NULL, NULL);
> >
> >in function acpi_video_bus_add()
> >
> >Something like this:
> >
> >before:
> >        if (!device)
> >		return_VALUE(-EINVAL);
> >
> >	video = kmalloc(sizeof(struct acpi_video_bus), GFP_KERNEL);
> >
> >after:
> >        if (!device)
> >		return_VALUE(-EINVAL);
> >
> >	acpi_evaluate_object(NULL, "\\_SB_.PCI0.PCI1.VGA_._PS0", NULL, NULL);
> >	video = kmalloc(sizeof(struct acpi_video_bus), GFP_KERNEL);
> >
> >Of course, its ugly, but its only to test if _PS0 is supported or not by
> >linux.
> 
> OK, it compiled cleanly. After loading the module dmesg said:
> ACPI: Video Device [VGA] (multi-head: yes  rom: yes  post: no)
> 
> Nothing else I could observe. Should I do any other tests?
> 

You are sure that 
echo 0x80000001 > /proc/acpi/video/VGA/TV/state
still dont work even with that hack?

Well, I don't have other ideas.  I'm sorry.

-- 
Bruno Ducrot

--  Which is worse:  ignorance or apathy?
--  Don't know.  Don't care.


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Re: New insights about video module! Need help,please.

[Sergio Monteiro Basto]

On Mon, 2005-02-28 at 19:17 +0100, Tommy Ch. wrote:

> Is this correct? If yes, a
> echo "tv_out:1" > /proc/acpi/toshiba/video
> had no effect.

To switch to tv-out I used keys Fn+F2 or Fn+F3 (don't remember exactly),
which just begging to work when I put ACPI on kernel.
The keys to switch to tv-out on Windows should work on Linux (with ACPI
enabled of course).

Regards,

-- 
Sérgio M.B.



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Re: New insights about video module! Need help,please.

[Tommy Ch.]

Sergio Monteiro Basto wrote:
> On Mon, 2005-02-28 at 19:17 +0100, Tommy Ch. wrote:
> 
> 
>>Is this correct? If yes, a
>>echo "tv_out:1" > /proc/acpi/toshiba/video
>>had no effect.
> 
> 
> To switch to tv-out I used keys Fn+F2 or Fn+F3 (don't remember exactly),
> which just begging to work when I put ACPI on kernel.
> The keys to switch to tv-out on Windows should work on Linux (with ACPI
> enabled of course).

Unfortunately my Toshiba notebook needs a tool for FN-Keys on windows, 
too. So no way. I know that there are notebooks where FN-Keys somehow 
bypass ACPI and BIOS takes care of all the stuff (?).

Bye


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Re: New insights about video module! Need help,please.

[Sergio Monteiro Basto]

On Tue, 2005-03-01 at 23:10 +0100, Tommy Ch. wrote:
> Sergio Monteiro Basto wrote:
> > On Mon, 2005-02-28 at 19:17 +0100, Tommy Ch. wrote:
> > 
> > 
> >>Is this correct? If yes, a
> >>echo "tv_out:1" > /proc/acpi/toshiba/video
> >>had no effect.
> > 
> > 
> > To switch to tv-out I used keys Fn+F2 or Fn+F3 (don't remember exactly),
> > which just begging to work when I put ACPI on kernel.
> > The keys to switch to tv-out on Windows should work on Linux (with ACPI
> > enabled of course).
> 
> Unfortunately my Toshiba notebook needs a tool for FN-Keys on windows, 
> too. So no way. I know that there are notebooks where FN-Keys somehow 
> bypass ACPI and BIOS takes care of all the stuff (?).

Hi,
The other way, that I had to switch the video output, is with one small
utility for my specific video card (S3 savage), called s3switch.

Regards,
-- 
Sérgio M.B.



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