I've had this happen on at least one other installation. This is with a fresh
minimal Stretch installation followed by installing 14.0.5 tdm-trinity and
tdebase-trinity. When I boot multi-user.target, aplay works. Then I startx into
TDE, an error sound briefly occurs, followed by the nosound indication from
kmix, and no more sounds. I log off TDE, and aplay no longer works, until I do
alsactl init again, after which aplay works only until another TDE session is
started. Any ideas what's going on that TDE kills sound?
Attached are listed some installed packages plus snd modules:
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snd 86016 13 snd_hda_intel,snd_hwdep,snd_seq,snd_hda_codec,snd_hda_codec_analog,snd_timer,snd_hda_codec_generic,snd_seq_device,snd_pcm
snd_hda_codec 135168 3 snd_hda_intel,snd_hda_codec_analog,snd_hda_codec_generic
snd_hda_codec_analog 16384 1
snd_hda_codec_generic 69632 1 snd_hda_codec_analog
snd_hda_core 81920 4 snd_hda_intel,snd_hda_codec,snd_hda_codec_analog,snd_hda_codec_generic
snd_hda_intel 36864 2
snd_hwdep 16384 1 snd_hda_codec
snd_pcm 110592 3 snd_hda_intel,snd_hda_codec,snd_hda_core
snd_seq 65536 1 snd_seq_dummy
snd_seq_device 16384 1 snd_seq
snd_seq_dummy 16384 0
snd_timer 32768 2 snd_seq,snd_pcm
soundcore 16384 1 snd
ii alsa-tools 1.1.3-1 amd64 Console based ALSA utilities for specific hardware
ii alsa-utils 1.1.3-1 amd64 Utilities for configuring and using ALSA
ii artsbuilder-trinity 4:14.0.5~pre8-0debian9.0.0+2~a amd64 synthesizer designer for aRts
ii arts-trinity 4:14.0.5~pre8-0debian9.0.0+0~a all sound system from the official TDE release
ii kmix-trinity 4:14.0.5~pre8-0debian9.0.0+2~a amd64 sound mixer applet for Trinity
ii libarts1-akode-trinity 4:14.0.5~pre8-0debian9.0.0+2~a amd64 akode plugin for aRts
ii libarts1-audiofile-trinity 4:14.0.5~pre8-0debian9.0.0+2~a amd64 audiofile plugin for aRts
ii libarts1c2a-trinity:amd64 4:14.0.5~pre8-0debian9.0.0+0~a amd64 aRts sound system core components
ii libarts1-mpeglib-trinity 4:14.0.5~pre8-0debian9.0.0+2~a amd64 mpeglib plugin for aRts, supporting mp3 and mpeg audio/video
ii libartsc0-trinity:amd64 4:14.0.5~pre8-0debian9.0.0+0~a amd64 aRts sound system C support library
ii libasound2:amd64 1.1.3-5 amd64 shared library for ALSA applications
ii libasound2-data 1.1.3-5 all Configuration files and profiles for ALSA drivers
ii libpulse0:amd64 10.0-1 amd64 PulseAudio client libraries
ii tdebase-tdeio-plugins-trinity 4:14.0.5~pre16-0debian9.0.0+3~a amd64 core I/O slaves for TDE
ii tdeio-umountwrapper-trinity 4:14.0.4-0debian9.0.0+0~a amd64 progress dialog for safely removing devices in Trinity.
ii tdm-trinity 4:14.0.5~pre16-0debian9.0.0+3~a amd64 X display manager for TDE