PC-speaker control

PC-speaker control

[Rafael Diniz]

Hey, Is there a way to control the PC-speaker with the Linux kernel 2.2?
I want to disable it.
I guy told me that with this assembly code I can disable it:
	in al , 97
	and al,253
	out 97,al
Linux 2.4 will have any syscall to do this?

Thanks
Rafael Diniz
Brazil
=================================================
Conectiva Linux 6.0 (2.2.17)  XFree86-4.0.1
PII 233mhz 96Mb ram
SB16, USR56k, S3 VirgeDX/GX 4Mb, CD creative48X 
HDa 10Gb Quantum  HDb 4.1Gb Fugitsu
MSX2.0 256k MegaRam 256k Mapper 128k Vram
MSX is the future
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Re: PC-speaker control

[Robert Read]

Try this on the console:

setterm -blength 0

no assembly required. :)

robert


On Mon, Jan 01, 2001 at 06:30:37PM -0200, Rafael Diniz wrote:
> Hey, Is there a way to control the PC-speaker with the Linux kernel 2.2?
> I want to disable it.
> I guy told me that with this assembly code I can disable it:
> 	in al , 97
> 	and al,253
> 	out 97,al
> Linux 2.4 will have any syscall to do this?
> 
> Thanks
> Rafael Diniz
> Brazil
> =================================================
> Conectiva Linux 6.0 (2.2.17)  XFree86-4.0.1
> PII 233mhz 96Mb ram
> SB16, USR56k, S3 VirgeDX/GX 4Mb, CD creative48X 
> HDa 10Gb Quantum  HDb 4.1Gb Fugitsu
> MSX2.0 256k MegaRam 256k Mapper 128k Vram
> MSX is the future
> =================================================
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> Please read the FAQ at http://www.tux.org/lkml/
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To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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Re: PC-speaker control

[Daniel Phillips]

Robert Read wrote:
> Try this on the console:
> 
> setterm -blength 0
> 
> no assembly required. :)

Yes, and my xterm still beeps - if I make that go away then something
else will beep.

Somebody posted a patch to do a global disable of the speaker some time
back, and I wish that the patch were generally available.  The result of
not having the global disable is an office full of beeping computers.

How does this look:

  cat 0 >/proc/sys/dev/speaker/beep

--
Daniel
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Re: PC-speaker control

[Daniel Phillips]

Daniel Phillips wrote:
> 
> Robert Read wrote:
> > Try this on the console:
> >
> > setterm -blength 0
> >
> > no assembly required. :)
> 
> Yes, and my xterm still beeps - if I make that go away then something
> else will beep.
> 
> Somebody posted a patch to do a global disable of the speaker some time
> back, and I wish that the patch were generally available.  The result of
> not having the global disable is an office full of beeping computers.
> 
> How does this look:
> 
>   cat 0 >/proc/sys/dev/speaker/beep

eh,

  echo 0 >/proc/sys/dev/speaker/beep

--
Daniel
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Re: PC-speaker control

[Robert Read]

On Tue, Jan 02, 2001 at 01:40:43AM +0100, Daniel Phillips wrote:
> Daniel Phillips wrote:
> > 
> > Robert Read wrote:
> > > Try this on the console:
> > >
> > > setterm -blength 0
> > >
> > > no assembly required. :)
> > 
> > Yes, and my xterm still beeps - if I make that go away then something
> > else will beep.
> > 
> > Somebody posted a patch to do a global disable of the speaker some time
> > back, and I wish that the patch were generally available.  The result of
> > not having the global disable is an office full of beeping
> > computers.

Right, I see what you mean. Disabling the beep is one thing I always
do, and it requires a few differnt steps, like "xset b off" for xterms
and so on.  It would be nice to switch it off in one place and be done
with it.

> > 
> > How does this look:
> > 
>   echo 0 >/proc/sys/dev/speaker/beep
> 

This looks good to me.  As far as I can tell, it looks like the beep
is generated by kd_mksound, which is a function pointer that usually
points to drivers/char/vt.c:_kd_mksound().  Can anyone verify this?

It doesn't look to hard to write a sysctl driver that would change the
function pointer to something quieter.  Is this what patch did?

robert
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