我无法使用pulseaudioUbuntu 19.04，所以根本没有声音，我的笔记本电脑是 Lambda Tensorbook。谁能帮我解决这个“头痛”问题？提前致谢。
x@x:~$ pulseaudio -vvv\nI: [pulseaudio] main.c: setrlimit(RLIMIT_NICE, (31, 31)) failed: Operation not permitted\nI: [pulseaudio] main.c: setrlimit(RLIMIT_RTPRIO, (9, 9)) failed: Operation not permitted\nD: [pulseaudio] core-rtclock.c: Timer slack is set to 50 us.\nD: [pulseaudio] core-util.c: RealtimeKit worked.\nI: [pulseaudio] core-util.c: Successfully gained nice level -11.\nI: [pulseaudio] main.c: This is PulseAudio 12.0-378-g02fc89\nD: [pulseaudio] main.c: Compilation host: x86_64-pc-linux-gnu\nD: [pulseaudio] main.c: Compilation CFLAGS: -g -O0 -Wall -W -Wextra -pipe -Wno-long-long -Wno-overlength-strings -Wunsafe-loop-optimizations -Wundef -Wformat=2 -Wlogical-op -Wsign-compare -Wformat-security -Wmissing-include-dirs -Wformat-nonliteral -Wpointer-arith …