Depois de instalar o Fedora 28 XFCE, eu tinha som (tudo funcionou). Eu corro atualização dnf e depois de reiniciar eu perdi o som.
O plugin PulseAudio para o painel diz na dica de ferramenta "Não conectado ao servidor PulseAudio".
Depois de clicar nele, vejo "Estabelecer conexão com o PulseAudio. Aguarde ...". Esperar não faz nada.
Algum outro plug-in de painel para controle de som (mais simples que o anterior) diz apenas na dica de ferramenta "Nenhum dispositivo e / ou elemento válido".
Executando o VLC, "Falha na saída de áudio: o dispositivo de áudio" default "não pôde ser usado: Conexão recusada.".
Rodando
ps aux | grep pulse
retorna.
Rodando
/usr/lib64/xfce4/panel/wrapper-2.0 /usr/lib64/xfce4/panel/plugins/libpulseaudio-plugin.so 36 14680107 pulseaudio PulseAudio Plugin Adjust the audio volume of the PulseAudio sound system
alsamixer
retorna
ALSA lib pulse.c:243:(pulse_connect) PulseAudio: Unable to connect: Connection refused
cannot open mixer: Connection refused
Rodando
cat /proc/asound/version
retorna
Advanced Linux Sound Architecture Driver Version k4.17.2-200.fc28.x86_64.
Rodando
cat /dev/sndstat
retorna
cat: /dev/sndstat: No such file or directory
Rodando
sudo pulseaudio
retorna
W: [pulseaudio] main.c: This program is not intended to be run as root (unless --system is specified).
E: [pulseaudio] backend-ofono.c: Failed to register as a handsfree audio agent with ofono: org.freedesktop.DBus.Error.ServiceUnknown: The name org.ofono was not provided by any .service files
Rodando
lsusb
retorna
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 010: ID 8087:07dc Intel Corp.
Bus 001 Device 008: ID 0b97:7772 O2 Micro, Inc. OZ776 CCID Smartcard Reader
Bus 001 Device 007: ID 0b97:7761 O2 Micro, Inc. Oz776 1.1 Hub
Bus 001 Device 006: ID 04f3:0398 Elan Microelectronics Corp.
Bus 001 Device 005: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 001 Device 029: ID 1017:2010 Speedy Industrial Supplies, Pte., Ltd
Bus 001 Device 009: ID 1199:9063 Sierra Wireless, Inc.
Bus 001 Device 028: ID 09da:f613 A4Tech Co., Ltd.
Bus 001 Device 031: ID 0fce:51ba Sony Ericsson Mobile Communications AB
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub