( 0.030| 0.013) D: [pulseaudio] alsa-mixer.c: Looking at profile output:analog-mono ( 0.030| 0.000) D: [pulseaudio] alsa-mixer.c: Checking for playback on Analog Mono (analog-mono) ( 0.030| 0.000) D: [pulseaudio] alsa-util.c: Trying hw:0 with SND_PCM_NO_AUTO_FORMAT ... ( 0.041| 0.011) D: [pulseaudio] alsa-util.c: Managed to open hw:0 ( 0.042| 0.000) D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(1) failed: Invalid argument ( 0.042| 0.000) D: [pulseaudio] alsa-util.c: Trying hw:0 without SND_PCM_NO_AUTO_FORMAT ... ( 0.043| 0.000) D: [pulseaudio] alsa-util.c: Managed to open hw:0 ( 0.043| 0.000) D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(1) failed: Invalid argument ( 0.043| 0.000) D: [pulseaudio] alsa-util.c: Trying plug:hw:0 with SND_PCM_NO_AUTO_FORMAT ... ( 0.044| 0.001) D: [pulseaudio] alsa-util.c: Managed to open plug:hw:0 ( 0.045| 0.000) D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(1) failed: Invalid argument ( 0.045| 0.000) D: [pulseaudio] alsa-util.c: Trying plug:hw:0 without SND_PCM_NO_AUTO_FORMAT ... ( 0.046| 0.001) D: [pulseaudio] alsa-util.c: Managed to open plug:hw:0 ( 0.050| 0.003) D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(1) failed: Invalid argument ( 0.050| 0.000) I: [pulseaudio] alsa-util.c: Failed to set hardware parameters on plug:hw:0: Invalid argument ( 0.050| 0.000) D: [pulseaudio] alsa-mixer.c: Looking at profile output:analog-mono+input:analog-mono ( 0.050| 0.000) D: [pulseaudio] alsa-mixer.c: Checking for playback on Analog Mono (analog-mono) ( 0.050| 0.000) D: [pulseaudio] alsa-util.c: Trying hw:0 with SND_PCM_NO_AUTO_FORMAT ... ( 0.051| 0.001) D: [pulseaudio] alsa-util.c: Managed to open hw:0 ( 0.052| 0.000) D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(1) failed: Invalid argument ( 0.052| 0.000) D: [pulseaudio] alsa-util.c: Trying hw:0 without SND_PCM_NO_AUTO_FORMAT ... ( 0.053| 0.000) D: [pulseaudio] alsa-util.c: Managed to open hw:0 ( 0.053| 0.000) D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(1) failed: Invalid argument ( 0.053| 0.000) D: [pulseaudio] alsa-util.c: Trying plug:hw:0 with SND_PCM_NO_AUTO_FORMAT ... ( 0.054| 0.001) D: [pulseaudio] alsa-util.c: Managed to open plug:hw:0 ( 0.055| 0.000) D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(1) failed: Invalid argument ( 0.055| 0.000) D: [pulseaudio] alsa-util.c: Trying plug:hw:0 without SND_PCM_NO_AUTO_FORMAT ... ( 0.056| 0.001) D: [pulseaudio] alsa-util.c: Managed to open plug:hw:0 ( 0.059| 0.003) D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(1) failed: Invalid argument ( 0.060| 0.000) I: [pulseaudio] alsa-util.c: Failed to set hardware parameters on plug:hw:0: Invalid argument ( 0.060| 0.000) D: [pulseaudio] alsa-mixer.c: Looking at profile output:analog-mono+input:analog-stereo ( 0.060| 0.000) D: [pulseaudio] alsa-mixer.c: Checking for playback on Analog Mono (analog-mono) ( 0.060| 0.000) D: [pulseaudio] alsa-util.c: Trying hw:0 with SND_PCM_NO_AUTO_FORMAT ... ( 0.061| 0.000) D: [pulseaudio] alsa-util.c: Managed to open hw:0 ( 0.061| 0.000) D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(1) failed: Invalid argument ( 0.061| 0.000) D: [pulseaudio] alsa-util.c: Trying hw:0 without SND_PCM_NO_AUTO_FORMAT ... ( 0.062| 0.000) D: [pulseaudio] alsa-util.c: Managed to open hw:0 ( 0.062| 0.000) D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(1) failed: Invalid argument ( 0.063| 0.000) D: [pulseaudio] alsa-util.c: Trying plug:hw:0 with SND_PCM_NO_AUTO_FORMAT ... ( 0.064| 0.001) D: [pulseaudio] alsa-util.c: Managed to open plug:hw:0 ( 0.064| 0.000) D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(1) failed: Invalid argument ( 0.064| 0.000) D: [pulseaudio] alsa-util.c: Trying plug:hw:0 without SND_PCM_NO_AUTO_FORMAT ... ( 0.066| 0.001) D: [pulseaudio] alsa-util.c: Managed to open plug:hw:0 ( 0.069| 0.003) D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(1) failed: Invalid argument ( 0.069| 0.000) I: [pulseaudio] alsa-util.c: Failed to set hardware parameters on plug:hw:0: Invalid argument
Neither cs5536 nor intel8x0 support mono, only a few ac97 controllers (e.g. emu10k1, ymfpci au88x0) have a DSP which can convert mono digital data to stereo digital data (panning) before sending them to ac97 codec through ac97 link it is the analog mixer inside ac97 codec which provide a mono output from the stereo signal. it is rare to use this mono pin on the desktop motherboard because comprehensive color coding scheme for ports and connectors in PC 99 specification http://en.wikipedia.org/wiki/PC_System_Design_Guide only some notebook/tablet use it for the mono speaker of subwoofer ( 0.069| 0.000) D: [pulseaudio] alsa-mixer.c: Looking at profile output:analog-mono+input:iec958-stereo ( 0.069| 0.000) D: [pulseaudio] alsa-mixer.c: Checking for playback on Analog Mono (analog-mono) ( 0.069| 0.000) D: [pulseaudio] alsa-util.c: Trying hw:0 with SND_PCM_NO_AUTO_FORMAT ... ( 0.070| 0.000) D: [pulseaudio] alsa-util.c: Managed to open hw:0 ( 0.071| 0.000) D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(1) failed: Invalid argument ( 0.071| 0.000) D: [pulseaudio] alsa-util.c: Trying hw:0 without SND_PCM_NO_AUTO_FORMAT ... ( 0.072| 0.001) D: [pulseaudio] alsa-util.c: Managed to open hw:0 ( 0.072| 0.000) D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(1) failed: Invalid argument ( 0.072| 0.000) D: [pulseaudio] alsa-util.c: Trying plug:hw:0 with SND_PCM_NO_AUTO_FORMAT ... ( 0.073| 0.001) D: [pulseaudio] alsa-util.c: Managed to open plug:hw:0 ( 0.074| 0.000) D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(1) failed: Invalid argument ( 0.074| 0.000) D: [pulseaudio] alsa-util.c: Trying plug:hw:0 without SND_PCM_NO_AUTO_FORMAT ... ( 0.075| 0.001) D: [pulseaudio] alsa-util.c: Managed to open plug:hw:0 ( 0.079| 0.003) D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(1) failed: Invalid argument ( 0.079| 0.000) I: [pulseaudio] alsa-util.c: Failed to set hardware parameters on plug:hw:0: Invalid argument ( 0.079| 0.000) D: [pulseaudio] alsa-mixer.c: Looking at profile output:analog-stereo ( 0.079| 0.000) D: [pulseaudio] alsa-mixer.c: Checking for playback on Analog Stereo (analog-stereo) ( 0.079| 0.000) D: [pulseaudio] alsa-util.c: Trying front:0 with SND_PCM_NO_AUTO_FORMAT ... ( 0.086| 0.007) I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 0 ( 0.086| 0.000) I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM front:0 ( 0.087| 0.000) I: [pulseaudio] alsa-util.c: Error opening PCM device front:0: Invalid argument ( 0.087| 0.000) D: [pulseaudio] alsa-util.c: Trying hw:0 with SND_PCM_NO_AUTO_FORMAT ... ( 0.088| 0.001) D: [pulseaudio] alsa-util.c: Managed to open hw:0 ( 0.088| 0.000) D: [pulseaudio] alsa-util.c: Maximum hw buffer size is 371 ms ( 0.088| 0.000) D: [pulseaudio] alsa-util.c: Set buffer size first (to 3528 samples), period size second (to 441 samples). ( 0.089| 0.000) D: [pulseaudio] alsa-mixer.c: Profile output:analog-stereo supported. ( 0.101| 0.012) I: [pulseaudio] alsa-util.c: Successfully attached to mixer 'hw:0' ( 0.102| 0.000) D: [pulseaudio] alsa-mixer.c: Probing path 'analog-output' as there is no "front" device, it just fallback to "hw" -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922656 Title: Analog-output-lfe-on-mono is only output option To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/922656/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
