Re: [gentoo-user] mpv: no sound anymore...?

[Mick]

On Saturday, 20 January 2018 07:11:52 GMT tuxic@××××××.de wrote:
> Hi,
>
> either by one of the last updates or by me while un-pulseaudio-fy
> firefox (and removing pulseaudio afterwards) mpv is no longer willing
> to play any sound.
>
>
> Some informations:
>
> [I] media-video/mpv
>      Available versions:  0.18.0-r1 0.25.0-r2 (~)0.26.0 (~)0.27.0-r1
> [M](~)0.28.0 **9999 {+X +alsa aqua archive bluray cdda +cli coreaudio
> cplugins cuda doc drm dvb dvd +egl +enca encode gbm +iconv jack javascript
> jpeg lcms +libass libav libcaca libguess libmpv (+)lua luajit openal
> +opengl oss pulseaudio raspberry-pi rubberband samba sdl selinux test tools
> (+)uchardet v4l vaapi vdpau vf-dlopen wayland xinerama +xscreensaver +xv
> zlib zsh-completion CPU_FLAGS_X86="sse4_1" PYTHON_TARGETS="python2_7
> python3_4 python3_5 python3_6"} Installed versions:  0.27.0-r1(06:53:23 AM
> 01/04/2018)(X alsa archive cdda cli cplugins cuda doc drm dvb dvd egl
> encode iconv jack jpeg libass lua luajit opengl tools uchardet v4l vdpau xv
> zlib zsh-completion -aqua -bluray -coreaudio -gbm -javascript -lcms -libav
> -libcaca -libmpv -openal -oss -pulseaudio -raspberry-pi -rubberband -samba
> -sdl -selinux -test -vaapi -wayland PYTHON_TARGETS="python2_7 python3_5
> python3_6 -python3_4") Homepage:            https://mpv.io/
>      Description:         Media player based on MPlayer and mplayer2
>
>
> Output on the console while playing a video:
> mpv the_best_GPU_for_Blender-720p.mp4
> Playing: the_best_GPU_for_Blender-720p.mp4
>  (+) Video --vid=1 (*) (h264 1280x720 29.970fps)
>  (+) Audio --aid=1 --alang=und (*) (aac 2ch 44100Hz)
> ALSA lib
> /var/tmp/portage/media-libs/alsa-lib-1.1.5/work/alsa-lib-1.1.5/src/pcm/pcm_
> dmix.c:1099:(snd_pcm_dmix_open) unable to open slave [ao/alsa] Playback open
> error: Device or resource busy
> [ao] Failed to initialize audio driver 'alsa'
> Could not open/initialize audio device -> no sound.
> Audio: no audio
> VO: [opengl] 1280x720 yuv420p
> V: 00:00:01 / 00:12:38 (0%)
>
>
> Exiting... (Quit)
>
>
> Or with jack:
>
> (replaced my username by 'user')
>
> ps -ef | grep jack
> user  4299     1  0 02:47 ?        00:01:34 jackd -t5000 -dalsa -dhw:0
> -r48000 -p1024 -n2 -H -M -Xseq user 24837 24766  0 08:05 pts/3    00:00:00
> grep -E --color jack
>
> id
> uid=1001(user) gid=100(users)
> groups=100(users),10(wheel),12(mail),14(uucp),18(audio),19(cdrom),27(video)
> ,35(games),80(cdrw),85(usb),103(docker),237(wireshark),244(vboxusers),245(vl
> ock),246(realtime)
>
> [I] media-sound/jack-audio-connection-kit
>      Available versions:  0.121.3-r1 (~)0.124.1-r1 (~)0.125.0 {alsa altivec
> coreaudio cpudetection debug doc examples oss pam ABI_MIPS="n32 n64 o32"
> ABI_PPC="32 64" ABI_S390="32 64" ABI_X86="32 64 x32" CPU_FLAGS_X86="3dnow
> mmx sse"} Installed versions:  0.125.0(07:33:45 AM 12/05/2017)(alsa pam
> -altivec -coreaudio -debug -doc -examples -oss ABI_MIPS="-n32 -n64 -o32"
> ABI_PPC="-32 -64" ABI_S390="-32 -64" ABI_X86="64 -32 -x32"
> CPU_FLAGS_X86="3dnow sse") Homepage:            http://www.jackaudio.org
>      Description:         A low-latency audio server
>
> (using zsh):
>     l /dev/**/*jack*
>     srwxr-xr-x 1 user users  0 2018-01-20 02:47
> /dev/shm/jack-1001/default/jack_0 srwxr-xr-x 1 user users  0 2018-01-20
> 02:47 /dev/shm/jack-1001/default/jack_ack_0 prw-r--r-- 1 user users  0
> 2018-01-20 08:07 /dev/shm/jack-1001/default/jack-ack-fifo-4299-0 prw-r--r--
> 1 user users  0 2018-01-20 08:07
> /dev/shm/jack-1001/default/jack-ack-fifo-4299-1 prw-r--r-- 1 user users  0
> 2018-01-20 02:47 /dev/shm/jack-1001/default/jack-ack-fifo-4299-2 prw-r--r--
> 1 user users  0 2018-01-20 02:49
> /dev/shm/jack-1001/default/jack-ack-fifo-4299-3
>
> /dev/shm/jack-1001:
> total 0
>
> mpv --audio-device=jack the_best_GPU_for_Blender-720p.mp4
> Playing: the_best_GPU_for_Blender-720p.mp4
>  (+) Video --vid=1 (*) (h264 1280x720 29.970fps)
>  (+) Audio --aid=1 --alang=und (*) (aac 2ch 44100Hz)
> ALSA lib
> /var/tmp/portage/media-libs/alsa-lib-1.1.5/work/alsa-lib-1.1.5/src/pcm/pcm_
> dmix.c:1099:(snd_pcm_dmix_open) unable to open slave [ao/alsa] Playback open
> error: Device or resource busy
> [ao] Failed to initialize audio driver 'alsa'
> Could not open/initialize audio device -> no sound.
> Audio: no audio
> VO: [opengl] 1280x720 yuv420p
> V: 00:00:01 / 00:12:38 (0%)
>
> (why it is accessing alsa here???)
>
>
> Using for example zynaddsubfx (softsynth) via qjackctrl/jack I can
> play sound.
> Mpv does not show up in qjackctrl....
>
> The situation does not change if doing anything of the above as root.
>
> Mplayer plays sound...but fails to play the video instead.
>
> Currently I dont know what the problem here.
>
> If anyone has any idea...heartly welcome... :)
>
> Cheers
> Meino

I'd start by running 'alsactl init' to (re)initialise alsa and see if it 
reports any errors.

-- 
Regards,
Mick