On 02/25/2012 04:54 PM, Rob Kampen wrote:
> Hi List,
> I have an ASUS G73S laptop with our favorite OS installed and all
> up-to-date.
> Sound has always "just worked"
> When I use the Preferences>Sound app I can setup the hardware, input,
> output and was overall very impressed.
> One can check each speaker and the laptop has a front left and right and
> also has a bass speaker which seems to be connected to the left rear.
>
> The various players seem to work fine e.g mplayer, JuK, VLC media player.
>
> Recently I wanted to play a movie off the internet and so out came Firefox.
> Imagine my surprise as I hear only the background music from the rear
> channel - the front left and right appear to have disappeared.
>
> When I plug in some headphones, it seems that the phones only pick up
> right rear and left rear - front left and right are gone (laptop
> speakers are muted due to headphones being plugged in)
>
> So one cannot listen to audio from internet via flash player........
>
> I have the high definition digital audio disabled as I understand this
> is for the HDMI audio system which I have not played with.
>
> I think alsa and pulse audio are installed.
> rpm -qa |grep pulse
> pulseaudio-module-gconf-0.9.21-13.el6.x86_64
> pulseaudio-utils-0.9.21-13.el6.i686
> pulseaudio-module-bluetooth-0.9.21-13.el6.x86_64
> pulseaudio-0.9.21-13.el6.x86_64
> pulseaudio-libs-glib2-0.9.21-13.el6.i686
> pulseaudio-libs-glib2-0.9.21-13.el6.x86_64
> pulseaudio-module-x11-0.9.21-13.el6.x86_64
> kde-settings-pulseaudio-4.3.1-1.el6.centos.noarch
> pulseaudio-gdm-hooks-0.9.21-13.el6.x86_64
> pulseaudio-esound-compat-0.9.21-13.el6.x86_64
> alsa-plugins-pulseaudio-1.0.21-3.el6.i686
> pulseaudio-libs-0.9.21-13.el6.i686
> alsa-plugins-pulseaudio-1.0.21-3.el6.x86_64
> fluxbox-pulseaudio-1.1.1-5.el6.noarch
> pulseaudio-libs-0.9.21-13.el6.x86_64
> pulseaudio-libs-zeroconf-0.9.21-13.el6.x86_64
> pulseaudio-utils-0.9.21-13.el6.x86_64
>
> rpm -qa |grep alsa
> alsa-plugins-oss-1.0.21-3.el6.x86_64
> alsa-utils-1.0.21-3.el6.x86_64
> alsa-plugins-samplerate-1.0.21-3.el6.i686
> alsa-plugins-vdownmix-1.0.21-3.el6.x86_64
> alsa-plugins-speex-1.0.21-3.el6.x86_64
> alsa-plugins-usbstream-1.0.21-3.el6.i686
> alsa-lib-1.0.22-3.el6.i686
> kmod-alsa-1.0.24-1.el6.elrepo.x86_64
> alsamixergui-0.9.0-0.9.rc2.el6.x86_64
> alsa-lib-1.0.22-3.el6.x86_64
> alsa-plugins-upmix-1.0.21-3.el6.x86_64
> alsa-plugins-usbstream-1.0.21-3.el6.x86_64
> alsa-plugins-upmix-1.0.21-3.el6.i686
> alsa-plugins-pulseaudio-1.0.21-3.el6.i686
> alsa-plugins-samplerate-1.0.21-3.el6.x86_64
> alsa-plugins-pulseaudio-1.0.21-3.el6.x86_64
> alsa-plugins-vdownmix-1.0.21-3.el6.i686
> alsa-plugins-speex-1.0.21-3.el6.i686
> alsa-plugins-oss-1.0.21-3.el6.i686
>
>
> Some stats on the machine:
>
> cat /proc/asound/version
> Advanced Linux Sound Architecture Driver Version 1.0.24.
> Compiled on Apr 29 2011 for kernel 2.6.32-71.el6.x86_64 (SMP).
>
> cat /proc/asound/cards
> 0 [PCH ]: HDA-Intel - HDA Intel PCH
> HDA Intel PCH at 0xf6a00000 irq 35
> 1 [NVidia ]: HDA-Intel - HDA NVidia
> HDA NVidia at 0xf4080000 irq 17
>
> cat /proc/asound/devices
> 1: : sequencer
> 2: [ 0- 1]: digital audio playback
> 3: [ 0- 0]: digital audio playback
> 4: [ 0- 0]: digital audio capture
> 5: [ 0- 0]: hardware dependent
> 6: [ 0] : control
> 7: [ 1- 9]: digital audio playback
> 8: [ 1- 8]: digital audio playback
> 9: [ 1- 7]: digital audio playback
> 10: [ 1- 3]: digital audio playback
> 11: [ 1- 3]: hardware dependent
> 12: [ 1- 2]: hardware dependent
> 13: [ 1- 1]: hardware dependent
> 14: [ 1- 0]: hardware dependent
> 15: [ 1] : control
> 33: : timer
>
> cat /proc/asound/pcm
> 00-00: ALC269VB Analog : ALC269VB Analog : playback 1 : capture 1
> 00-01: ALC269VB Digital : ALC269VB Digital : playback 1
> 01-03: HDMI 0 : HDMI 0 : playback 1
> 01-07: HDMI 0 : HDMI 0 : playback 1
> 01-08: HDMI 0 : HDMI 0 : playback 1
> 01-09: HDMI 0 : HDMI 0 : playback 1
>
> lsmod |grep snd
> snd_seq_dummy 1846 0
> snd_hda_codec_hdmi 24897 4
> snd_hda_codec_realtek 324530 1
> snd_hda_intel 25565 2
> snd_hda_codec 96476 3
> snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel
> snd_hwdep 6874 1 snd_hda_codec
> snd_seq 57357 1 snd_seq_dummy
> snd_seq_device 6882 2 snd_seq_dummy,snd_seq
> snd_pcm 88945 3
> snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
> snd_timer 23087 2 snd_seq,snd_pcm
> snd 73879 14
> snd_seq_dummy,snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_seq,snd_seq_device,snd_pcm,snd_timer
> soundcore 8086 1 snd
> snd_page_alloc 8692 2 snd_hda_intel,snd_pcm
>
> sudo lspci -vvv
> 00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset
> Family High Definition Audio Controller (rev 05)
> Subsystem: ASUSTeK Computer Inc. Device 1a13
> Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
> Stepping- SERR- FastB2B- DisINTx+
> Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast>TAbort-
> <TAbort-<MAbort->SERR-<PERR- INTx-
> Latency: 0, Cache Line Size: 64 bytes
> Interrupt: pin A routed to IRQ 35
> Region 0: Memory at f6a00000 (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 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
> Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
> Address: 00000000fee04000 Data: 4064
> Capabilities: [70] Express (v1) Root Complex Integrated Endpoint,
> MSI 00
> DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s
> <64ns, L1<1us
> ExtTag- RBE- FLReset+
> DevCtl: Report errors: Correctable- Non-Fatal- Fatal-
> Unsupported-
> RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
> MaxPayload 128 bytes, MaxReadReq 128 bytes
> DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+
> TransPend-
> LnkCap: Port #0, Speed unknown, Width x0, ASPM unknown,
> Latency L0<64ns, L1<1us
> ClockPM- Surprise- LLActRep- BwNot-
> LnkCtl: ASPM Disabled; Disabled- Retrain- CommClk-
> ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
> LnkSta: Speed unknown, Width x0, TrErr- Train- SlotClk-
> DLActive- BWMgmt- ABWMgmt-
> Capabilities: [100] Virtual Channel<?>
> Capabilities: [130] Root Complex Link<?>
> Kernel driver in use: HDA Intel
> Kernel modules: snd-hda-intel
>
> 01:00.1 Audio device: nVidia Corporation GF106 High Definition Audio
> Controller (rev a1)
> Subsystem: ASUSTeK Computer Inc. Device 2048
> Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
> Stepping- SERR- FastB2B- DisINTx-
> Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast>TAbort-
> <TAbort-<MAbort->SERR-<PERR- INTx-
> Latency: 0, Cache Line Size: 64 bytes
> Interrupt: pin B routed to IRQ 17
> Region 0: Memory at f4080000 (32-bit, non-prefetchable) [size=16K]
> Capabilities: [60] Power Management version 3
> Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
> PME(D0-,D1-,D2-,D3hot-,D3cold-)
> Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
> Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
> Address: 0000000000000000 Data: 0000
> Capabilities: [78] Express (v2) Endpoint, MSI 00
> DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s<4us,
> L1<64us
> ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
> DevCtl: Report errors: Correctable- Non-Fatal- Fatal-
> Unsupported-
> RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
> MaxPayload 128 bytes, MaxReadReq 512 bytes
> DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq- AuxPwr-
> TransPend-
> LnkCap: Port #0, Speed 2.5GT/s, Width x16, ASPM L0s L1,
> Latency L0<256ns, L1<4us
> ClockPM+ Surprise- LLActRep- BwNot-
> LnkCtl: ASPM Disabled; RCB 128 bytes Disabled- Retrain- CommClk-
> ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
> LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+
> DLActive- BWMgmt- ABWMgmt-
> DevCap2: Completion Timeout: Not Supported, TimeoutDis+
> DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
> LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance-
> SpeedDis-, Selectable De-emphasis: -6dB
> Transmit Margin: Normal Operating Range,
> EnterModifiedCompliance- ComplianceSOS-
> Compliance De-emphasis: -6dB
> LnkSta2: Current De-emphasis Level: -6dB
> Kernel driver in use: HDA Intel
> Kernel modules: snd-hda-intel
>
> Not sure what other info can be of help.
> Anyone else have this front / back swap issue?
> Anyone have any ideas why no front channel audio output on flash/firefox??
> What if anything allows these various audio channels to connect / cross
> connect?
>
> TIA for any suggested reading - my google foo has failed to locate
> anything recent that might relate to CentOS 6.
>
Finally found it - the gnome-volume-control app actually spawns the
Preferences>Sound dialog and under the Applications tab the various
running sound apps are shown. The firefox/flash plugin shows as ALSA
plug-in [npviewer.bin] and was muted - simply unmute and all is well.
>
>
>
>
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