[ALSA - driver 0001678]: nForce (10de:026c) left channel squeals, right channel mostly okay

bugtrack
2006-01-06T17:14:40Z

Last Modified: 01-06-2006 18:14 CET
======================================================================
Summary: nForce (10de:026c) left channel squeals, right
channel mostly okay
Description:
This is an integrated chipset on an ASUS A8N-VM-UAYGZ mobo. Marketing info
is this is an "nForce410" board, with "6-channel HD audio".

Both the ALSA in 2.6.15-rc6-git4 and the 1.0.11rc1 ALSA driver for
snd-hda-intel load fine, but during playback, the left channel squeals,
while the right seems to play things okay.

I'm happy to dig around and try whatever needs trying to get this fixed.
Thanks!
======================================================================

----------------------------------------------------------------------
kees - 01-04-06 17:56
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Tried 1.0.11rc2. No changes in any of the behavior. However, I did notice
a behavior I didn't report before that exists in mainline, 1.0.11rc1, and
1.0.11rc2: after module startup, the left channel of the "front" line is
muted. All other settings are okay, though.

----------------------------------------------------------------------
adel - 01-06-06 18:14
----------------------------------------------------------------------
Hi,

I would like to confirm this bug on my ASUS A7N-VM CSM
with SoundMax ADI AD1986A 5.1 integrated with the motherboard.
I'm using Ubuntu Breezu, with kernel 2.6.14 .

The system make a horrible noise (trying to play de gdm "welcome" sound)
and after the sound driver seems to crash. However there is no messages in
/var/log/messages or dmesg. But the modules are still loaded :

snd_hda_intel snd_hda_codec snd_pcm_oss snd_mixer_oss, snd_pcm and
snd_timer

I applied successfully the patch :
http://www.nabble.com/Intel-HDA-AD1986A-without-surround-t595968.html
on alsa-driver-1.0.10.

Now the sound seems stable with some litte strange noise (perhaps my
speakers).

this is the lspci -nvv :
0000:00:10.1 0403: 10de:026c (rev a2)
Subsystem: 10de:cb84
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 0 (500ns min, 1250ns max)
Interrupt: pin B routed to IRQ 5
Region 0: Memory at febd8000 (32-bit, non-prefetchable)
[size=16K]
Capabilities: [44] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0
Enable-
Address: 0000000000000000 Data: 0000
Capabilities: [6c] #08 [a802]

Issue History
Date Modified Username Field Change
======================================================================
12-25-05 02:29 kees New Issue
12-25-05 02:29 kees Distribution => Ubuntu Breezy
12-25-05 02:29 kees Kernel Version => 2.6.15-rc6-git4
12-26-05 11:02 kees Note Added: 0007149
12-30-05 23:43 morgoth666 Issue Monitored: morgoth666
12-30-05 23:43 morgoth666 Issue End Monitor: morgoth666
12-30-05 23:44 morgoth666 Issue Monitored: morgoth666
12-30-05 23:50 morgoth666 Note Added: 0007300
12-31-05 05:47 Dr Hotdog Issue Monitored: Dr Hotdog
12-31-05 10:16 kees Note Added: 0007355
12-31-05 17:12 Dr Hotdog Note Added: 0007357
12-31-05 17:30 Dr Hotdog Note Edited: 0007357
01-04-06 17:40 tiwai Note Added: 0007446
01-04-06 17:56 kees Note Added: 0007449
01-06-06 18:14 adel Note Added: 0007490