VGA out on ibook2

VGA out on ibook2

[EliuG]

Hi
	I'm trying to use the external VGA connector on an ibook2 (the white
one) with the benh utility m3mirror and, after turning crt on, the
screen on the monitor looks "wavy" and unusable.
	Anybody could guide me to solve this problem?

Also... anybody knows how to turn up the composite video output of the
ibook2?

Thanks a lot!
--
Félix Ortega Hortiguela	<guile@mac.com>
Avoid the gates of hell  --  Use Linux!


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Re: VGA out on ibook2

[Michael Schmitz]

> 	I'm trying to use the external VGA connector on an ibook2 (the white
> one) with the benh utility m3mirror and, after turning crt on, the
> screen on the monitor looks "wavy" and unusable.
> 	Anybody could guide me to solve this problem?

Dump the CRTC and CRTC2 registers (come to think of it, dump any of the
interesting registers). Compare with what you get after using MockOS to
set up the VGA display and booting with video=ofonly.

Use a scope to verify there is a hsync signal (I suspect it might not be
generated, or it's way out of spec.

> Also... anybody knows how to turn up the composite video output of the
> ibook2?

Apple knows. Examine their drivers.

	Michael

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Re: VGA out on ibook2

[Paulo Abreu]

Linux PPC Developer Digest wrote:
>Hi
>	I'm trying to use the external VGA connector on an ibook2 (the white
>one) with the benh utility m3mirror and, after turning crt on, the
>screen on the monitor looks "wavy" and unusable.
>	Anybody could guide me to solve this problem?

Same problem here. If I include the crt:1 option in the kernel booting
options, the waves dissapear and the console looks good, but the X
colors are all wrong. Looks like the crt is in 8bpp while X and the lcd
are in 16bpp. Tried this with 2.4.10-ben0.

Paulo


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Re: VGA out on ibook2

[Michel Dänzer]

On Fri, 2001-10-12 at 09:36, Paulo Abreu wrote:
>
> Linux PPC Developer Digest wrote:
> >Hi
> >	I'm trying to use the external VGA connector on an ibook2 (the white
> >one) with the benh utility m3mirror and, after turning crt on, the
> >screen on the monitor looks "wavy" and unusable.
> >	Anybody could guide me to solve this problem?
>
> Same problem here. If I include the crt:1 option in the kernel booting
> options, the waves dissapear and the console looks good, but the X
> colors are all wrong. Looks like the crt is in 8bpp while X and the lcd
> are in 16bpp. Tried this with 2.4.10-ben0.

Do you use Option "UseFBDev" in X?


--
Earthling Michel Dänzer (MrCooper)/ Debian GNU/Linux (powerpc) developer
XFree86 and DRI project member   /  CS student, Free Software enthusiast

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Re: VGA out on ibook2

[Félix Ortega]

En sáb, 2001-10-13 a 13:05, Michel Dänzer escribio:
[...]
> Do you use Option "UseFBDev" in X?
Yes. I'm using Ati driver 16bit depth with the option UseFBDev,
PanelWidth 1024 and PanelHeigth 768.
The behaviour of the vga out it's a little strange. If I boot without
the external monitor conected, when I turn on external monitor with
m3mirror, I have the "wavy" image I described in the other message. But
if I boot with the external monitor connected, from OpenFirmware I have
external monitor and when I boot I have a cuasi-perfect text console and
an X console like if it's on another depth. If I put the X Server at 8
bit depth, I can see almost perfect picture (the colors are wrong). If I
put 16 or 24 bit, I have a "dual" screen, the screen divided in planes
so if I move the cursor across the middle of the screen, the cursor in
the external monitor exits right and enter left. If I switch back to the
text console, everything is ok.
I have tried with Ati Xfree and with FrameBuffer X, with the same
results.
I have dumped the struct aty128_crtc with printk's in the function
aty128_set_crt_enable, and it has allways the same values.
I'm a little confused because is the first time I try to tweak a driver,
anyone can help me?
Sorry my poor english, please....
--
Félix Ortega Hortiguela	<guile@mac.com>
Avoid the gates of hell  --  Use Linux!


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Re: VGA out on ibook2

[Michel Dänzer]

On Sun, 2001-10-14 at 18:18, Félix Ortega wrote:
>
> En sáb, 2001-10-13 a 13:05, Michel Dänzer escribio:
> [...]
> > Do you use Option "UseFBDev" in X?
> Yes. I'm using Ati driver 16bit depth with the option UseFBDev,
> PanelWidth 1024 and PanelHeigth 768.
> The behaviour of the vga out it's a little strange. If I boot without
> the external monitor conected, when I turn on external monitor with
> m3mirror, I have the "wavy" image I described in the other message. But
> if I boot with the external monitor connected, from OpenFirmware I have
> external monitor and when I boot I have a cuasi-perfect text console and
> an X console like if it's on another depth. If I put the X Server at 8
> bit depth, I can see almost perfect picture (the colors are wrong). If I
> put 16 or 24 bit, I have a "dual" screen, the screen divided in planes
> so if I move the cursor across the middle of the screen, the cursor in
> the external monitor exits right and enter left. If I switch back to the
> text console, everything is ok.
> I have tried with Ati Xfree and with FrameBuffer X, with the same
> results.

Sounds like an aty128fb bug then.


--
Earthling Michel Dänzer (MrCooper)/ Debian GNU/Linux (powerpc) developer
XFree86 and DRI project member   /  CS student, Free Software enthusiast

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