Public bug reported:
First of all, here's the problem. When playing any sound I only get
good sound from one channel, the other channel plays but emits a loud
high pitched buzzing/squealing sound the entire time the sound card is
being used (and for a few seconds afterwards).
I'm running on an amd64 and started out with edgy amd64 and had the
problem there. I decided I wanted some newer packages (and hoped maybe
the problem had been fixed) so I upgraded and I'm now running Feisty
amd64 yet the problem persisted. Thinking it might be a amd64 related
problem I booted to a livecd of edgy i386 yet had the same problem.
Poking around on google I found someone else who had a similar problem
and their fix seems to be working for me (haven't had any time to test
it extensively) for the moment.
Their solution was to add this line to /etc/modprobe.d/alsa-base
"options snd-hda-intel index=0 model=3stack position_fix=0 single_cmd=0"
I'm not sure which option is fixing it, but now sound plays properly
from both channels and no high pitch squealing sound. As I said, I'm
running Feisty right now with a 2.6.20-9 kernel for x86_64. I don't
know if this fix works for edgy (but I would assume it might).
The relevant info from lspci -vv is
04:01.0 Audio device: VIA Technologies, Inc. VIA High Definition Audio
Controller (rev 10)
Subsystem: Lenovo Unknown device 8668
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, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 17
Region 0: Memory at feafc000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA
PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [60] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0
Enable-
Address: 0000000000000000 Data: 0000
Capabilities: [70] Express Unknown type IRQ 0
Device: Supported: MaxPayload 128 bytes, PhantFunc 0, ExtTag-
Device: Latency L0s <64ns, L1 <1us
Device: Errors: Correctable- Non-Fatal- Fatal- Unsupported-
Device: RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
Device: MaxPayload 128 bytes, MaxReadReq 128 bytes
Link: Supported Speed unknown, Width x0, ASPM unknown, Port 0
Link: Latency L0s <64ns, L1 <1us
Link: ASPM Disabled CommClk- ExtSynch-
Link: Speed unknown, Width x0
From: aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: VT82xx [HDA VIA VT82xx], device 0: AD198x Analog [AD198x Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 0: VT82xx [HDA VIA VT82xx], device 1: AD198x Digital [AD198x Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
The module it's using for sound is snd-hda-intel (I tried the snd-VT82xx
module but that left me with the system not finding my sound card)
If you need any other details please let me know.
** Affects: Ubuntu
Importance: Undecided
Status: Unconfirmed
--
High pitched noise from one channel when playing sounds
https://launchpad.net/bugs/90303
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