<div dir="ltr"> > > > My problem is that when I set channel output to "Analog output surround > > > 5.1" > > > (or 2.1 or 4.1), I hear no sound in front speakers, but in case of 5.1 or > > > 4.1You need pulseaudio lfe-filter for 2.1 <a href="http://cgit.freedesktop.org/pulseaudio/pulseaudio/log/?qt=grep&q=lfe-filter" target="_blank">http://cgit.freedesktop.org/pulseaudio/pulseaudio/log/?qt=grep&q=lfe-filter</a>do you mean surround21 need 6 channel instead of channels with 5.1 internal /external speaker ? <a href="http://git.alsa-project.org/?p=alsa-lib.git;a=commitdiff;h=48f1b308cc66152eb6db66742dd0d08d888cda8d;hp=5c4cd46810cef8850b037fca9e38ffd43b0bff22" target="_blank">http://git.alsa-project.org/?p=alsa-lib.git;a=commitdiff;h=48f1b308cc66152eb6db66742dd0d08d888cda8d;hp=5c4cd46810cef8850b037fca9e38ffd43b0bff22</a> > > > I can hear sound in rear speakers. I use kernel 3.19.5 and it didn't > > > happen in > > > earlier kernels that is 3.18 and in 3.17 for sure. > > > > > > My configuration is: > > > OS: Fedora 21 64 bit > > > SoundCard: ALC888 > > > Model name: acer-aspire-4930g > > > Laptop: Acer Aspire 5930g > > > Speakers: external 5.1 with 3 jacks > > > Sound channel configuration module is standard configuration module from > > > KDE. > > > > > > Additional info: > > > 1) When channel output is 5.1 and I unplug green jack and leave two others > > > jacks connected then I can hear sound in laptop internal speakers.auto mute only check headphone jack or line out jack but not those retasked mio jacks > > > 2) Earlier (kernel 3.18 and 3.17) I didn't have possibility to choose 2.1 > > > configuration and additionally to 4.1 configuration I could also choose > > > 4.0 > > > configuration. > > > > > > You need to switch "Channel mode" to "6 ch" if you need to use external > > > > 5.1 speakers since you have 5.1 internal speakers > > > > this change pin-ctl of headphone jack, mic jack and line in to OUT > > > > post the output of alsa-info.sh > > I always switched to "6 ch" through alsamixer. It always worked as expected, > but recently I've got problems with it so it regressed somewhere. > > > My alsa-info.sh with "6 ch" set through alsamixer and "Analog output surround > 5.1 + Analog input stereo" set through KDE configuration module. ><a href="http://www.alsa-project.org/db/?f=ff3f5a1f7f3e4662c3fa9bcf0158474a076b4cc4" target="_blank"> http://www.alsa-project.org/db/?f=ff3f5a1f7f3e4662c3fa9bcf0158474a076b4cc4</a> > > With that I hear all channels except front left and front right.autoconfig for ALC888: line_outs=3 (0x14/0x17/0x16/0x0/0x0) type:speaker speaker_outs=0 (0x0/0x0/0x0/0x0/0x0) hp_outs=1 (0x15/0x0/0x0/0x0/0x0) mono: mono_out=0x0 dig-out=0x1e/0x0 inputs: Mic=0x18 Internal Mic=0x12 Line=0x1a ==> Best config: lo_type=2, wired=1, mio=1 multi_outs = 15/0/0/0 : 2/3/4/0 (type HP) out path: depth=3 '02:0c:15' multi_ios(2) = 1a/18 : 3/4 mio path: depth=3 '03:0d:1a' mio path: depth=3 '04:0e:18' spk_outs = 14/17/16/0 : 5/25/4/0 spk path: depth=3 '05:0f:14' spk path: depth=3 '25:26:17' spk path: depth=3 '04:0e:16' Node 0x15 [Pin Complex] wcaps 0x40058f: Stereo Amp-In Amp-Out Control: name="Headphone Playback Switch", index=0, device=0 ControlAmp: chs=3, dir=Out, idx=0, ofs=0 Control: name="Front Headphone Jack", index=0, device=0 Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0 Amp-In vals: [0x00 0x00] Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-Out vals: [0x80 0x80] Pincap 0x0001003e: IN OUT HP EAPD Detect Trigger EAPD 0x2: EAPD Pin Default 0x0221101f: [Jack] HP Out at Ext Front Conn = 1/8, Color = Black DefAssociation = 0x1, Sequence = 0xf Pin-ctls: 0xc0: OUT HP Unsolicited: tag=01, enabled=1 Power states: D0 D1 D2 D3 EPSS Power: setting=D0, actual=D0 Connection: 5 0x0c* 0x0d 0x0e 0x0f 0x26 it is still headphone jack with pin-ctl : 0xc0 OUT HP while mic jack and line in jack 's pin ctl are changed to 0x40 OUTchannel mode only change two mio jacks from IN to OUT May need to use add_out_jack_mode=1 instead of add_jack_modes=1 when there are Mic and line in jacksUse Headphone Jack Mode control to switch HP to Line Out for pin-ctl and EAPD <a href="https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/?id=f811c3cf8fae63ecc8a937ba7376490e2565f8f1" target="_blank">https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/?id=f811c3cf8fae63ecc8a937ba7376490e2565f8f1</a> > To exclude that my speakers are broken or wrong connected: I get sound from > front left and front right if i switch in KDE configuration module to "Analog > duplex stereo", but then I get no sound from rest of my speakers. <a href="http://cgit.freedesktop.org/pulseaudio/pulseaudio/tree/src/modules/alsa/mixer/paths/analog-output-headphones.conf" target="_blank">http://cgit.freedesktop.org/pulseaudio/pulseaudio/tree/src/modules/alsa/mixer/paths/analog-output-headphones.conf</a> pulseaudio mute external center/lfe controls when headphone jack is plugged since pulseaudio not aware that the role of headphone has been changed [Element Center] switch = off volume = off [Element LFE] switch = off volume = off > > > KDE configuration module lets me choose "connector" configuration but only in > stereo mode. > In stereo mode I can choose between "headphones" and "speakers". > If it is set to "headphones" I hear sound in front left and front right > speakers. > If it is set to "speakers" I hear sound in rear left and rear right speakers. >you need to switch "channel mode" to "2 ch" if you want to use your 5.1 internal speaker <a href="https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/?id=786c51f9168cfd2d49250c6e5e60035cbb2fd5a1" target="_blank">https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/?id=786c51f9168cfd2d49250c6e5e60035cbb2fd5a1</a> There are difference between static model and generic parser </div>