<div dir="ltr">Hi all,<div>I'm struggling to get pulseaudio working on a machine with Q77 chipset (<a href="http://device.product.name">device.product.name</a> = "7 Series/C210 Series Chipset Family High Definition Audio Controller",alsa.mixer_name = "Realtek ALC887-VD") but so far I had no success in getting pulseaudio working with 5.1 setup. </div> <div>Basically, my motherboard supports 2/4/6/8 channels configuration but pulseaudio activates only 2ch config.</div><div>I'm using KDE and phonon shows only (using default configurations) left/right channels, (internal stereo audio)</div> <div>If I force pulseaudio to use all 5.1 channles, adding the following lines </div><div><div><br></div><div>enable-lfe-remixing = yes</div><div>default-sample-channels=6</div><div>default-channel-map = front-left,front-right,rear-left,rear-right,front-center,lfe</div> </div><div><br></div><div>in /etc/pulse/daemon.conf<br></div><div><br></div><div style>pulseaudio shows 5.1 channels (even in kde phonon), but front channels (l,r,c) works fine; lfe no sound and rl and rr are not working, anly a very low volume comes out from front speakers.</div> <div style><br></div><div style>I've tried all suggestions from google, mailing lists and forums as well but no joy so far.</div><div style><br></div><div style>===============</div><div style>Linux 3.9.3</div><div style> <br></div><div style>$ aplay -L</div><div style><br></div><div>sysdefault:CARD=PCH</div><div> HDA Intel PCH, ALC887-VD Analog</div><div> Default Audio Device</div><div>front:CARD=PCH,DEV=0</div><div> HDA Intel PCH, ALC887-VD Analog</div> <div> Front speakers</div><div>surround40:CARD=PCH,DEV=0</div><div> HDA Intel PCH, ALC887-VD Analog</div><div> 4.0 Surround output to Front and Rear speakers</div><div>surround41:CARD=PCH,DEV=0</div><div> HDA Intel PCH, ALC887-VD Analog</div> <div> 4.1 Surround output to Front, Rear and Subwoofer speakers</div><div>surround50:CARD=PCH,DEV=0</div><div> HDA Intel PCH, ALC887-VD Analog</div><div> 5.0 Surround output to Front, Center and Rear speakers</div> <div>surround51:CARD=PCH,DEV=0</div><div> HDA Intel PCH, ALC887-VD Analog</div><div> 5.1 Surround output to Front, Center, Rear and Subwoofer speakers</div><div>surround71:CARD=PCH,DEV=0</div><div> HDA Intel PCH, ALC887-VD Analog</div> <div> 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers</div><div><br></div><div>==========</div><div><br></div><div style>pulseaudio -vvvvv tells a different story, here an excerpt from output; I can provide full output, I didn't posted here to avoid unnecessary cluttering </div> <div style><div>[...]</div><div>D: [pulseaudio] alsa-mixer.c: Looking at profile output:analog-surround-51</div><div>D: [pulseaudio] alsa-mixer.c: Checking for playback on Analog Surround 5.1 (analog-surround-51)</div><div> D: [pulseaudio] alsa-util.c: Trying surround51:0 with SND_PCM_NO_AUTO_FORMAT ...</div><div>D: [pulseaudio] alsa-util.c: Managed to open surround51:0</div><div>D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(6) failed: Invalid argument</div> <div>D: [pulseaudio] alsa-util.c: Trying surround51:0 without SND_PCM_NO_AUTO_FORMAT ...</div><div>D: [pulseaudio] alsa-util.c: Managed to open surround51:0</div><div>D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(6) failed: Invalid argument</div> <div>D: [pulseaudio] alsa-util.c: Trying plug:surround51:0 with SND_PCM_NO_AUTO_FORMAT ...</div><div>D: [pulseaudio] alsa-util.c: Managed to open plug:surround51:0</div><div>D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(6) failed: Invalid argument</div> <div>D: [pulseaudio] alsa-util.c: Trying plug:surround51:0 without SND_PCM_NO_AUTO_FORMAT ...</div><div>D: [pulseaudio] alsa-util.c: Managed to open plug:surround51:0</div><div>D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(6) failed: Invalid argument</div> <div>I: [pulseaudio] alsa-util.c: Failed to set hardware parameters on plug:surround51:0: Invalid argument</div><div>D: [pulseaudio] alsa-mixer.c: Caching failure to open output:analog-surround-51</div><div>D: [pulseaudio] alsa-mixer.c: Skipping profile output:analog-surround-51+input:analog-mono - will not be able to open output:analog-surround-51</div> <div>D: [pulseaudio] alsa-mixer.c: Skipping profile output:analog-surround-51+input:analog-stereo - will not be able to open output:analog-surround-51</div><div>D: [pulseaudio] alsa-mixer.c: Skipping profile output:analog-surround-51+input:iec958-stereo - will not be able to open output:analog-surround-51</div> <div>[...]</div></div><div style><br></div><div style>Can someone give me an hint about how to sort this issue out? I'm pretty sure that I'm doing something wrong, but I'm not able to find what.</div><div style> <br></div><div style><br></div><div style><br></div><div style> </div><div><div><br></div>-- <br>Fabio </div></div>