On Mon, 2013-05-20 at 15:41 +0200, Fabio Coatti wrote: > Hi all, > I'm struggling to get pulseaudio working on a machine with Q77 chipset ( > device.product.name = "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. > Basically, my motherboard supports 2/4/6/8 channels configuration but > pulseaudio activates only 2ch config. > I'm using KDE and phonon shows only (using default configurations) > left/right channels, (internal stereo audio) > If I force pulseaudio to use all 5.1 channles, adding the following lines > > enable-lfe-remixing = yes > default-sample-channels=6 > default-channel-map = > front-left,front-right,rear-left,rear-right,front-center,lfe > > in /etc/pulse/daemon.conf > > 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. > > I've tried all suggestions from google, mailing lists and forums as well > but no joy so far. > > =============== > Linux 3.9.3 > > $ aplay -L > > sysdefault:CARD=PCH > HDA Intel PCH, ALC887-VD Analog > Default Audio Device > front:CARD=PCH,DEV=0 > HDA Intel PCH, ALC887-VD Analog > Front speakers > surround40:CARD=PCH,DEV=0 > HDA Intel PCH, ALC887-VD Analog > 4.0 Surround output to Front and Rear speakers > surround41:CARD=PCH,DEV=0 > HDA Intel PCH, ALC887-VD Analog > 4.1 Surround output to Front, Rear and Subwoofer speakers > surround50:CARD=PCH,DEV=0 > HDA Intel PCH, ALC887-VD Analog > 5.0 Surround output to Front, Center and Rear speakers > surround51:CARD=PCH,DEV=0 > HDA Intel PCH, ALC887-VD Analog > 5.1 Surround output to Front, Center, Rear and Subwoofer speakers > surround71:CARD=PCH,DEV=0 > HDA Intel PCH, ALC887-VD Analog > 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers > > ========== > > 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 > [...] > D: [pulseaudio] alsa-mixer.c: Looking at profile output:analog-surround-51 > D: [pulseaudio] alsa-mixer.c: Checking for playback on Analog Surround 5.1 > (analog-surround-51) > D: [pulseaudio] alsa-util.c: Trying surround51:0 with > SND_PCM_NO_AUTO_FORMAT ... > D: [pulseaudio] alsa-util.c: Managed to open surround51:0 > D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(6) failed: > Invalid argument > D: [pulseaudio] alsa-util.c: Trying surround51:0 without > SND_PCM_NO_AUTO_FORMAT ... > D: [pulseaudio] alsa-util.c: Managed to open surround51:0 > D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(6) failed: > Invalid argument > D: [pulseaudio] alsa-util.c: Trying plug:surround51:0 with > SND_PCM_NO_AUTO_FORMAT ... > D: [pulseaudio] alsa-util.c: Managed to open plug:surround51:0 > D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(6) failed: > Invalid argument > D: [pulseaudio] alsa-util.c: Trying plug:surround51:0 without > SND_PCM_NO_AUTO_FORMAT ... > D: [pulseaudio] alsa-util.c: Managed to open plug:surround51:0 > D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(6) failed: > Invalid argument > I: [pulseaudio] alsa-util.c: Failed to set hardware parameters on > plug:surround51:0: Invalid argument > D: [pulseaudio] alsa-mixer.c: Caching failure to open > output:analog-surround-51 > D: [pulseaudio] alsa-mixer.c: Skipping profile > output:analog-surround-51+input:analog-mono - will not be able to open > output:analog-surround-51 > D: [pulseaudio] alsa-mixer.c: Skipping profile > output:analog-surround-51+input:analog-stereo - will not be able to open > output:analog-surround-51 > D: [pulseaudio] alsa-mixer.c: Skipping profile > output:analog-surround-51+input:iec958-stereo - will not be able to open > output:analog-surround-51 > [...] > > 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. It looks like the "surround51" alsa device doesn't work. If you kill pulseaudio, does "speaker-test -Dsurround51 --channels=6" work? If not, it's an alsa bug. Doing the changes you did in daemon.conf shouldn't help with this issue, though, so I wonder how you're seeing a 6-channel output in phonon. "pactl list" output would be interesting. -- Tanu
