unlike other dell laptop, the user manual did no mention support of surround 51
but alsa driver seem allow surround40 did pulseaudio allow you to select surround 4.0 ? since there is no "Surround Playback Volume" control 0.037| 0.000) D: [pulseaudio] alsa-mixer.c: Looking at profile output:analog-surround-40 ( 0.037| 0.000) D: [pulseaudio] alsa-mixer.c: Checking for playback on Analog Surround 4.0 (analog-surround-40) ( 0.037| 0.000) D: [pulseaudio] alsa-util.c: Trying surround40:2 with SND_PCM_NO_AUTO_FORMAT ... ( 0.038| 0.000) D: [pulseaudio] alsa-util.c: Managed to open surround40:2 ( 0.038| 0.000) D: [pulseaudio] alsa-util.c: Maximum hw buffer size is 185 ms ( 0.060| 0.022) D: [pulseaudio] alsa-util.c: Set buffer size first (to 3528 samples), period size second (to 441 samples). ( 0.060| 0.000) D: [pulseaudio] alsa-mixer.c: Profile output:analog-surround-40 supported. ( 0.061| 0.000) I: [pulseaudio] (alsa-lib)control.c: Invalid CTL surround40:2 ( 0.061| 0.000) I: [pulseaudio] alsa-util.c: Unable to attach to mixer surround40:2: No such file or directory ( 0.061| 0.000) I: [pulseaudio] alsa-util.c: Successfully attached to mixer 'hw:2' ( 0.061| 0.000) D: [pulseaudio] alsa-mixer.c: Removing path 'analog-output' as it is a subset of 'analog-output-speaker'. ( 0.061| 0.000) D: [pulseaudio] alsa-mixer.c: Available mixer paths (after tidying): ( 0.061| 0.000) D: [pulseaudio] alsa-mixer.c: Path Set 0xe16e20, direction=1 ( 0.061| 0.000) D: [pulseaudio] alsa-mixer.c: Path analog-output-speaker (Speakers), direction=1, priority=100, probed=yes, supported=yes, has_mute=yes, has_volume=yes, has_dB=yes, min_volume=0, max_volume=64, min_dB=-100099, max_dB=0 ( 0.061| 0.000) D: [pulseaudio] alsa-mixer.c: Element Master, direction=1, switch=1, volume=1, volume_limit=-1, enumeration=0, required=0, required_any=0, required_absent=0, mask=0x7ffffffffffff, n_channels=1, override_map=yes ( 0.061| 0.000) D: [pulseaudio] alsa-mixer.c: Element Headphone, direction=1, switch=1, volume=3, volume_limit=-1, enumeration=0, required=0, required_any=0, required_absent=0, mask=0x6, n_channels=2, override_map=no ( 0.061| 0.000) D: [pulseaudio] alsa-mixer.c: Element Speaker, direction=1, switch=1, volume=1, volume_limit=-1, enumeration=0, required=0, required_any=4, required_absent=0, mask=0x3600000000f66, n_channels=2, override_map=yes ( 0.061| 0.000) D: [pulseaudio] alsa-mixer.c: Element PCM, direction=1, switch=0, volume=1, volume_limit=-1, enumeration=0, required=0, required_any=0, required_absent=0, mask=0x3600000000f66, n_channels=2, override_map=yes ( 0.061| 0.000) D: [pulseaudio] alsa-mixer.c: Element IEC958, direction=1, switch=2, volume=0, volume_limit=-1, enumeration=0, required=0, required_any=0, required_absent=0, mask=0x0, n_channels=0, override_map=no ( 0.061| 0.000) D: [pulseaudio] alsa-mixer.c: Jack Headphone, alsa_name='Headphone Jack', detection unavailable ( 0.061| 0.000) D: [pulseaudio] alsa-mixer.c: Jack Front Headphone, alsa_name='Front Headphone Jack', detection unavailable ( 0.080| 0.000) D: [pulseaudio] alsa-mixer.c: Looking at profile output:analog-surround-51 ( 0.080| 0.000) D: [pulseaudio] alsa-mixer.c: Checking for playback on Analog Surround 5.1 (analog-surround-51) ( 0.080| 0.000) D: [pulseaudio] alsa-util.c: Trying surround51:2 with SND_PCM_NO_AUTO_FORMAT ... ( 0.080| 0.000) D: [pulseaudio] alsa-util.c: Managed to open surround51:2 ( 0.081| 0.000) D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(6) failed: Invalid argument -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1075405 Title: Sound Only From Right Speaker after Upgrade Status in “alsa-driver” package in Ubuntu: New Bug description: After upgrading from Ubuntu 12.04 to Ubuntu 12.10, my laptop's sound will only come from its right speaker (despite that the balance is centered). ALSA Info: http://www.alsa-project.org/db/?f=c964bb7dd7d08f5e86818c56533dc519c45291fd To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1075405/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
