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.