[Expired for alsa-driver (Ubuntu) because there has been no activity for
60 days.]
** Changed in: alsa-driver (Ubuntu)
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/827193
Title:
Asus M3A78-EM / Realtek ALC1200 - output selection SNAFU
Status in alsa-driver package in Ubuntu:
Expired
Bug description:
I made the mistake of trying to use headphones about 36 hours ago. ;)
gnome-volume-control is aware of two 'connectors' for the analog
device, "Analog Output" and "Analog Headphones".
It turns out the front headphone output [presumably at Node 0x1b,
"Headphone Playback Switch" per /proc/asound/card0/codec#0] *does*
pass output along with the rear line out (Node 0x14, " [Jack] Line Out
at Ext Rear") when "Analog Output" is selected, but both jacks go
dead when "Analog Headphones" are selected.
(The working headphone output under the "Analog Output" profile can be
hard to notice when speakers are in the rear jack and cranked up!)
Further investigating shows that alsamixer's conception of the "Front"
channel has to be unmuted along with the headphone "switch" (choices
of mute or '00' for 'Headphon' in alsamixer) to receive headphone
output (or any output, since at least the rear green line-out depends
on this as well). Somewhat worse, the "switch" sometimes must be
toggled twice after muting to actually get sound out the jack - or as
I've just noticed, the "Front" channel may also need to be 'jiggled' a
second time before it unmutes or raises its volume level from 00.
passing model=6stack to the snd-hda-intel module changed nothing -
though I do note "model" parameters are device-specific and I'm still
digging around to figure out how much alsa knows about the ALC1200 in
this and future versions.
Now that I've realized the front headphone output *is* working by
default, I see that the rear output at Node 0x14 can be muted with the
alsa "hda-analyzer" and the front headphone output keeps on playing.
I suppose this means this "bug" is mainly with gnome-volume-control's idea of
what the "Analog Headphones" mixer profile is, with the added confusion of the
mixer settings not always 'taking' on the first try in alsamixer (although that
only turned up when I started poking at those channels in alsamixer, never in
normal use of the regular panel volume control).
The behavior with "Analog Output" selected is fine with me (although
one might assume that one is changing levels for the selected
'connector' only, and that this would be the rear connector only under
the "Analog Stereo Duplex" profile), but clearly "Analog Headphones"
should not be _disabling_ output from the front jack!
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: alsa-base 1.0.24+dfsg-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 2.6.38.7
Uname: Linux 2.6.38-10-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: floid 2104 F.... pulseaudio
/dev/snd/pcmC0D0p: floid 2104 F...m pulseaudio
Card0.Amixer.info:
Card hw:0 'SB'/'HDA ATI SB at 0xfbbf4000 irq 16'
Mixer name : 'Realtek ALC1200'
Components : 'HDA:10ec0888,104382fe,00100101'
Controls : 40
Simple ctrls : 22
Card1.Amixer.info:
Card hw:1 'HDMI'/'HDA ATI HDMI at 0xfbde8000 irq 19'
Mixer name : 'ATI RS690/780 HDMI'
Components : 'HDA:1002791a,00791a00,00100000'
Controls : 4
Simple ctrls : 1
Card1.Amixer.values:
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Date: Tue Aug 16 04:17:22 2011
PackageArchitecture: all
ProcEnviron:
LANGUAGE=en_US:en
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:SB successful
Symptom_Card: Internal Audio - HDA ATI SB
Symptom_Jack: Green Headphone Out, Front
Symptom_PulsePlaybackTest: PulseAudio playback test successful
Symptom_Type: Only some of outputs are working
Title: [System Product Name, Realtek ALC1200, Green Headphone Out, Front]
Playback problem
UpgradeStatus: Upgraded to natty on 2011-04-13 (125 days ago)
dmi.bios.date: 10/08/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2701
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: M3A78-EM
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr2701:bd10/08/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM3A78-EM:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
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