AH HA!!! - you are the first "burgundy" reply I've had... I will be *very*
interested to hear how it goes...
What does this mean ? This burgundy stuff ?
It's a more "advanced" version of the AWACS chip - should actually be easier
to deal with since you can actually read the registers in it (instead of
having to remember what you wrote - I always *did* hate write only
registers)...
:-)
Iain.
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From: Michel D�nzer <hidden> Date: 2000-07-26 09:59:32
Steffen Haeuser wrote:
Just wanted to tell that after putting earphones to the Mac, the sound
comes. Appearently it is only the internal speaker which does not work.
Just for the record:
My Pismo shows the same behaviour, the 'compatible' file in /proc/device-tree
says 'screamerawacs'.
Michel
--
0 and 1. Now what could be so hard about that?
______________________________________________________________________________
Earthling Michel Dänzer (MrCooper) \ CS student and free software enthusiast
Debian GNU/Linux (powerpc,i386) user \ member of XFree86, Team *AMIGA*, AUGS
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From: Benjamin Herrenschmidt <hidden> Date: 2000-07-26 11:09:23
quoted
Just wanted to tell that after putting earphones to the Mac, the sound
comes. Appearently it is only the internal speaker which does not work.
Just for the record:
My Pismo shows the same behaviour, the 'compatible' file in /proc/device-tree
says 'screamerawacs'.
I'm not completely sure, but some of these machines have the sound output
routed to an external I2C "SRS"/ampilfier module that drives the
speakers. We have code to set it up via Cuda on older machines, but not
for newer Core99 machines.
An interesting note also: When using this external module, Darwin driver
"fix" the AWACS volume to a constant value and uses the amplifier volume
control via I2C.
Ben.
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Just wanted to tell that after putting earphones to the Mac, the sound comes.
Appearently it is only the internal speaker which does not work.
so this behaviour is also happening on Burgundy. I've got an AWACS rev 3
here in my Pismo (device-tree name for the chip is 'screamerawacs')
and everything else works for me _except_ the damned built-in speakers.
as long as I don't have any external speakers to connect to, this is _very_
annoying, I have to boot to MacOS to listen to CD's etc etc... first I
thought the problem was in the new version of the sound chip, but since
Burgundies seem to have the same problem, I'm not so sure about it anymore.
However, poking around the mixer code doesn't shed any more light into the
problem.
Now, what do the Burgundy and AWACS rev.3 have in common? Most certainly
not the registers.
-topi
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From: Benjamin Herrenschmidt <hidden> Date: 2000-07-26 13:10:18
so this behaviour is also happening on Burgundy. I've got an AWACS rev 3
here in my Pismo (device-tree name for the chip is 'screamerawacs')
and everything else works for me _except_ the damned built-in speakers.
as long as I don't have any external speakers to connect to, this is _very_
annoying, I have to boot to MacOS to listen to CD's etc etc... first I
thought the problem was in the new version of the sound chip, but since
Burgundies seem to have the same problem, I'm not so sure about it anymore.
However, poking around the mixer code doesn't shed any more light into the
problem.
Now, what do the Burgundy and AWACS rev.3 have in common? Most certainly
not the registers.
New "screamer" revisions of AWACS have more registers than defined in the
current Linux driver. I'm not sure this is the cause of our problem, but
it could be. I thinking about a problem setting up an external amplifier.
Note also that a working sound driver wont give you CD playback "out of
the box". On all new machines, the CD audio output is _not_ wired to the
sound chip. You have to use a player software that actually reads the
digital audio datas from the CD via ATAPI and sends them back to the
sound driver. There's an XMMS plugin for that, I managed to use it but it
still contains a lot of bugs.
Ben.
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On Wed, 26 Jul 2000, Benjamin Herrenschmidt wrote:
New "screamer" revisions of AWACS have more registers than defined in the
current Linux driver. I'm not sure this is the cause of our problem, but
it could be. I thinking about a problem setting up an external amplifier.
Now, do you propose any method of determining exactly *where* the problem
lies? How can we manage to get hold of the specs of the new audio chips?
I mean, it works on MacOS, someone ought to know how to program the device!
Note also that a working sound driver wont give you CD playback "out of
the box". On all new machines, the CD audio output is _not_ wired to the
sound chip. You have to use a player software that actually reads the
digital audio datas from the CD via ATAPI and sends them back to the
I know. I use "cdparanoia 1- - | play -"
However it seems to be quite solid, i.e. I don't ever hear any 'blips'
resulting from jitter, so maybe the DVD-ROM drive is just reading the
audio data with full fidelity.
-topi
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Am 25-Jul-00 schrieb Iain Sandoe:
Hi!
Just wanted to tell that after putting earphones to the Mac, the sound comes.
Appearently it is only the internal speaker which does not work.
The Gnome-Event sounds sound "sort-of" correct (but a big "hard and noisy"),
but this might be correct, as MPG123 sounds perfectly :)
When I started Sin I just fell from my chair of this BIG NOISE, but this is
probably our fault (the guy who coded the sound was a Linux-x86 guy, so it
might be an Endian Problem, I have to check this... We'll surely manage
to fix this :) ).
Anyways, thanks for your help, guys :)
Steffen
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