From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: Re: Upgrade Blues 2.4.20 Ben H kernel
On Fri, 2003-03-07 at 18:57, Ira Weiny wrote:
quoted
Well I decided it was time to get up to date on my TiBook.
2) m3mirror does not work? This one really puzzles me. lcd:0 turns
off the
quoted
LCD screen but crt:1 does not turn on the outside monitor. I
rebooted into
quoted
Mac OS and the external port works. The only thing I can think of
is that I
quoted
did use the S-video port on Mac OS to show some pictures. Is there
something in OF which Mac OS would set which would make the external
port
quoted
not work with m3mirror?
Well... All it does is to enable the port by sending it the same signal
as the LCD. This works approx. well on the Pismo, but not with the tipb.
Somebody, I think, is working on proper mirroring based on setting up
the second CRTC.
Well I am, but I have not seen this one before. With Ben's m3mirror and
corresponding ioctls, crt:1 did turn on the external display, it was just
not stable.
Could you please boot with external monitor plugged in at power on and
pass video=aty128fb:crt:1,lcd:1 as additional boot parameters?
cheers,
manuj
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On Mon, 10 Mar 2003 11:48:55 -0500
Manuj Dhingra [off-list ref] wrote:
quoted
Well... All it does is to enable the port by sending it the same signal
as the LCD. This works approx. well on the Pismo, but not with the tipb.
Somebody, I think, is working on proper mirroring based on setting up
the second CRTC.
Well with your 2.4.15-pre7-ben0 the external monitor was working with my
TiBook. Worked quite well. I did not set the external monitor the same as the
LCD 'cause the refresh rates were different but I could turn on the external
and the LCD off and use the external quite well. So I can tell you that
worked.
Well I am, but I have not seen this one before. With Ben's m3mirror and
corresponding ioctls, crt:1 did turn on the external display, it was just
not stable.
Could you please boot with external monitor plugged in at power on and
pass video=aty128fb:crt:1,lcd:1 as additional boot parameters?
I did as you ask.
When the machine booted I got this on the external monitor:
...ok
copying OF device tree...done
Initializing fake screen: ATY,RageM3p12A
Calling quiesce
returning 0x01400000 from prom_init
I saw a message concering quiesce before. Maybe this message was from you.
Sorry I did not keep it.
Once I started X The screen displays garbage but seems to change when I bring
up windows or change desktops. So something is out there. Looks like the
frame buffer is out of order or something? I don't know I am just guessing.
Thanks,
Ira
iweiny@acm.org
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On Mon, 10 Mar 2003 11:48:55 -0500
Manuj Dhingra [off-list ref] wrote:
Well I am, but I have not seen this one before. With Ben's m3mirror and
corresponding ioctls, crt:1 did turn on the external display, it was just
not stable.
Could you please boot with external monitor plugged in at power on and
pass video=aty128fb:crt:1,lcd:1 as additional boot parameters?
One more thing I forgot to mention:
m3mirror crt:0 (and 1) will turn it off and on as expected.
Thanks guys,
Ira
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Well with your 2.4.15-pre7-ben0 the external monitor was working with my
TiBook. Worked quite well. I did not set the external monitor the same as the
LCD 'cause the refresh rates were different but I could turn on the external
and the LCD off and use the external quite well. So I can tell you that
worked.
Ok, it's a side effect of initializing the second head from OF. Newer
kernel do that to make sure both heads are properly POSTed on all
cards, but that results in OF setting the card in 2 split heads mode
causing the simple tweak used by m3mirror to fail.
I'm afraid I won't fix this, we really need real support for the
second head for mirroring.
Ben.
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