Answers:
问题出在system.pa。我在手册中发现,在系统范围内的守护程序配置中不应使用自动检测。
从pulseaudio手册页:
--disallow-module-loading[=BOOL]
Disallow module loading after startup. This is a security feature since it disallows additional module loading during runtime and on user request. It is highly recommended when --system is used (see above). Note however, that this breaks certain fea‐
tures like automatic module loading on hot plug.
所以我禁用了来自system.pa的(注释)行
### Automatically load driver modules depending on the hardware available
#.ifexists module-udev-detect.so
#load-module module-udev-detect
#.else
#### Use the static hardware detection module (for systems that lack udev/hal support)
#load-module module-detect
#.endif
现在可以了。
ps ps -ef | grep pulse
是否真的不运行。