* [ALSA - driver 0000737]: Background noise in master when no playing sound on Asus A7N8X Deluxe (nforce 2)
@ 2004-12-21 8:28 bugtrack
0 siblings, 0 replies; 4+ messages in thread
From: bugtrack @ 2004-12-21 8:28 UTC (permalink / raw)
To: alsa-devel
The following issue has been SUBMITTED.
======================================================================
<https://bugtrack.alsa-project.org/alsa-bug/view.php?id=737>
======================================================================
Reported By: keymon
Assigned To:
======================================================================
Project: ALSA - driver
Issue ID: 737
Category: PCI - intel8x0
Reproducibility: always
Severity: minor
Priority: normal
Status: new
Distribution: Debian
Kernel Version: 2.6.6
======================================================================
Date Submitted: 12-21-2004 09:28 CET
Last Modified: 12-21-2004 09:28 CET
======================================================================
Summary: Background noise in master when no playing sound on
Asus A7N8X Deluxe (nforce 2)
Description:
Quoting http://www.nvnews.net/vbulletin/printthread.php?t=35148:
Every Asus A7N8X Deluxe Rev 2.0 Board has a problem with a weird "whining"
"whirring" or "buzzing" "static" noise coming out of the speakers AND out
of the motherboard itself.
When speakers are connected and the volume is turned up to normal levels,
the noise is very loud, approx 20% of the signal.
This noise appear when the card is not playing sound and there is low CPU
using. As soon as you play sound, noise stops. If you pause xmms or any
player, noise returns.
Muting all the channels does not stop the noise, but if you exec: "alsactl
power 0 off" &https://bugtrack.alsa-project.org/alsa-bug/view.php?id=161;noise
stops!, but you have to exec "alsactl power 0 on"
to use the card again. The driver could do the same than "alsactl power 0
off" when it isn't playing sound.
If you use the lastest nforce drivers (1.0-0283 or newer) noise stops.
======================================================================
Issue History
Date Modified Username Field Change
======================================================================
12-21-04 09:28 keymon New Issue
12-21-04 09:28 keymon Distribution => Debian
12-21-04 09:28 keymon Kernel Version => 2.6.6
======================================================================
-------------------------------------------------------
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^ permalink raw reply [flat|nested] 4+ messages in thread
* [ALSA - driver 0000737]: Background noise in master when no playing sound on Asus A7N8X Deluxe (nforce 2)
@ 2004-12-21 17:40 bugtrack
0 siblings, 0 replies; 4+ messages in thread
From: bugtrack @ 2004-12-21 17:40 UTC (permalink / raw)
To: alsa-devel
A NOTE has been added to this issue.
======================================================================
<https://bugtrack.alsa-project.org/alsa-bug/view.php?id=737>
======================================================================
Reported By: keymon
Assigned To:
======================================================================
Project: ALSA - driver
Issue ID: 737
Category: PCI - intel8x0
Reproducibility: always
Severity: minor
Priority: normal
Status: new
Distribution: Debian
Kernel Version: 2.6.6
======================================================================
Date Submitted: 12-21-2004 09:28 CET
Last Modified: 12-21-2004 18:40 CET
======================================================================
Summary: Background noise in master when no playing sound on
Asus A7N8X Deluxe (nforce 2)
Description:
Quoting http://www.nvnews.net/vbulletin/printthread.php?t=35148:
Every Asus A7N8X Deluxe Rev 2.0 Board has a problem with a weird "whining"
"whirring" or "buzzing" "static" noise coming out of the speakers AND out
of the motherboard itself.
When speakers are connected and the volume is turned up to normal levels,
the noise is very loud, approx 20% of the signal.
This noise appear when the card is not playing sound and there is low CPU
using. As soon as you play sound, noise stops. If you pause xmms or any
player, noise returns.
Muting all the channels does not stop the noise, but if you exec: "alsactl
power 0 off" &https://bugtrack.alsa-project.org/alsa-bug/view.php?id=161;noise
stops!, but you have to exec "alsactl power 0 on"
to use the card again. The driver could do the same than "alsactl power 0
off" when it isn't playing sound.
If you use the lastest nforce drivers (1.0-0283 or newer) noise stops.
======================================================================
----------------------------------------------------------------------
tiwai - 12-21-04 18:40
----------------------------------------------------------------------
Please show /proc/asound/card0/codec97#0/ac97#0-0* files?
You can try to flip bits of POWER ac97 register (0x26) by writing to
ac97#0-0+regs proc file above such as:
# echo 26 803f > /proc/asound/card0/codec97#0/ac97#0-0+regs
This feature is enabled only when compiled with debug option (e.g.
--with-debug=full). Read the previous value, and change some bits.
Try first to turn bit 15 (0x8000) on. This can be an EAPD control.
Bit 14 (0x4000) is HP power down, Bit 8 and 9 (0x0300) are ADC/DAC power
down. Also, bit 10 is analog mixer (vref). In the power-down code in
ac97_codec.c, all these bits are turned on.
If it's EAPD, you can control via 'External Amplifier' mixer swithc, too.
Other bits are essential, so in general you shouldn't turn off during the
operation.
Issue History
Date Modified Username Field Change
======================================================================
12-21-04 09:28 keymon New Issue
12-21-04 09:28 keymon Distribution => Debian
12-21-04 09:28 keymon Kernel Version => 2.6.6
12-21-04 09:28 keymon Issue Monitored: keymon
12-21-04 18:40 tiwai Note Added: 0002900
======================================================================
-------------------------------------------------------
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^ permalink raw reply [flat|nested] 4+ messages in thread
* [ALSA - driver 0000737]: Background noise in master when no playing sound on Asus A7N8X Deluxe (nforce 2)
@ 2005-04-09 15:26 bugtrack
0 siblings, 0 replies; 4+ messages in thread
From: bugtrack @ 2005-04-09 15:26 UTC (permalink / raw)
To: alsa-devel
The following issue requires your FEEDBACK.
======================================================================
<https://bugtrack.alsa-project.org/alsa-bug/view.php?id=737>
======================================================================
Reported By: keymon
Assigned To:
======================================================================
Project: ALSA - driver
Issue ID: 737
Category: PCI - intel8x0
Reproducibility: always
Severity: minor
Priority: normal
Status: feedback
Distribution: Debian
Kernel Version: 2.6.6
======================================================================
Date Submitted: 12-21-2004 09:28 CET
Last Modified: 04-09-2005 17:26 CEST
======================================================================
Summary: Background noise in master when no playing sound on
Asus A7N8X Deluxe (nforce 2)
Description:
Quoting http://www.nvnews.net/vbulletin/printthread.php?t=35148:
Every Asus A7N8X Deluxe Rev 2.0 Board has a problem with a weird "whining"
"whirring" or "buzzing" "static" noise coming out of the speakers AND out
of the motherboard itself.
When speakers are connected and the volume is turned up to normal levels,
the noise is very loud, approx 20% of the signal.
This noise appear when the card is not playing sound and there is low CPU
using. As soon as you play sound, noise stops. If you pause xmms or any
player, noise returns.
Muting all the channels does not stop the noise, but if you exec: "alsactl
power 0 off" &https://bugtrack.alsa-project.org/alsa-bug/view.php?id=161;noise
stops!, but you have to exec "alsactl power 0 on"
to use the card again. The driver could do the same than "alsactl power 0
off" when it isn't playing sound.
If you use the lastest nforce drivers (1.0-0283 or newer) noise stops.
======================================================================
----------------------------------------------------------------------
tiwai - 12-21-04 18:40
----------------------------------------------------------------------
Please show /proc/asound/card0/codec97#0/ac97#0-0* files?
You can try to flip bits of POWER ac97 register (0x26) by writing to
ac97#0-0+regs proc file above such as:
# echo 26 803f > /proc/asound/card0/codec97#0/ac97#0-0+regs
This feature is enabled only when compiled with debug option (e.g.
--with-debug=full). Read the previous value, and change some bits.
Try first to turn bit 15 (0x8000) on. This can be an EAPD control.
Bit 14 (0x4000) is HP power down, Bit 8 and 9 (0x0300) are ADC/DAC power
down. Also, bit 10 is analog mixer (vref). In the power-down code in
ac97_codec.c, all these bits are turned on.
If it's EAPD, you can control via 'External Amplifier' mixer swithc, too.
Other bits are essential, so in general you shouldn't turn off during the
operation.
----------------------------------------------------------------------
jdthood - 04-09-05 17:26
----------------------------------------------------------------------
Submitter: You were asked to provide additional information.
Can you please provide it?
Issue History
Date Modified Username Field Change
======================================================================
12-21-04 09:28 keymon New Issue
12-21-04 09:28 keymon Distribution => Debian
12-21-04 09:28 keymon Kernel Version => 2.6.6
12-21-04 09:28 keymon Issue Monitored: keymon
12-21-04 18:40 tiwai Note Added: 0002900
04-09-05 17:26 jdthood Note Added: 0004423
04-09-05 17:26 jdthood Status new => feedback
======================================================================
-------------------------------------------------------
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^ permalink raw reply [flat|nested] 4+ messages in thread
* [ALSA - driver 0000737]: Background noise in master when no playing sound on Asus A7N8X Deluxe (nforce 2)
@ 2006-01-02 19:26 bugtrack
0 siblings, 0 replies; 4+ messages in thread
From: bugtrack @ 2006-01-02 19:26 UTC (permalink / raw)
To: alsa-devel
The following issue has been CLOSED
======================================================================
<https://bugtrack.alsa-project.org/alsa-bug/view.php?id=737>
======================================================================
Reported By: keymon
Assigned To:
======================================================================
Project: ALSA - driver
Issue ID: 737
Category: PCI - intel8x0
Reproducibility: always
Severity: minor
Priority: normal
Status: closed
Distribution: Debian
Kernel Version: 2.6.6
Resolution: open
Fixed in Version:
======================================================================
Date Submitted: 12-21-2004 09:28 CET
Last Modified: 01-02-2006 20:26 CET
======================================================================
Summary: Background noise in master when no playing sound on
Asus A7N8X Deluxe (nforce 2)
Description:
Quoting http://www.nvnews.net/vbulletin/printthread.php?t=35148:
Every Asus A7N8X Deluxe Rev 2.0 Board has a problem with a weird "whining"
"whirring" or "buzzing" "static" noise coming out of the speakers AND out
of the motherboard itself.
When speakers are connected and the volume is turned up to normal levels,
the noise is very loud, approx 20% of the signal.
This noise appear when the card is not playing sound and there is low CPU
using. As soon as you play sound, noise stops. If you pause xmms or any
player, noise returns.
Muting all the channels does not stop the noise, but if you exec: "alsactl
power 0 off" ¡noise stops!, but you have to exec "alsactl power 0 on"
to use the card again. The driver could do the same than "alsactl power 0
off" when it isn't playing sound.
If you use the lastest nforce drivers (1.0-0283 or newer) noise stops.
======================================================================
----------------------------------------------------------------------
jdthood - 04-09-05 17:26
----------------------------------------------------------------------
Submitter: You were asked to provide additional information.
Can you please provide it?
----------------------------------------------------------------------
rlrevell - 01-02-06 20:26
----------------------------------------------------------------------
No response
Issue History
Date Modified Username Field Change
======================================================================
12-21-04 09:28 keymon New Issue
12-21-04 09:28 keymon Distribution => Debian
12-21-04 09:28 keymon Kernel Version => 2.6.6
12-21-04 09:28 keymon Issue Monitored: keymon
12-21-04 18:40 tiwai Note Added: 0002900
04-09-05 17:26 jdthood Note Added: 0004423
04-09-05 17:26 jdthood Status new => feedback
01-02-06 20:26 rlrevell Status feedback => closed
01-02-06 20:26 rlrevell Note Added: 0007382
======================================================================
-------------------------------------------------------
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^ permalink raw reply [flat|nested] 4+ messages in thread
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