通过 ssh 导出音频时出错

Question

我正在尝试通过本地局域网将音频（x11 视频已在运行）从源 PC 转发到客户端 PC。两台机器都运行 ubuntu。我已关注这些说明但我遇到了一些错误。

pax11publish以下是每个工作站上的命令的结果：

[me@source ~] $ pax11publish
Server: {fb...05}unix:/home/me/.pulse/fb...05-runtime/native tcp:client-pc:4713 tcp6:client-pc:4713
Cookie: ac22 ... d0

[me@client ~] $ pax11publish
Server: {fb...05}unix:/home/me/.pulse/fb...05-runtime/native tcp:client-pc:4713 tcp6:client-pc:4713
Cookie: ac22...d0

为了使这些设置正常工作，我paprefs通过勾选以下框在客户端和源上进行了相同的配置：

network access tab > make discoverable pulseaudio network sound devices available locally
network server tab > enable network access to local sound devices
network server tab > allow other machines on the lan to discover local sound devices
simultaneous output tab > add virtual output device for simultaneous output on all local sound cards

我从客户端电脑继续ssh到源电脑：

$ ssh -C -R 24713:localhost:4713 user@source_pc -X

然后在源电脑上：

$ export PULSE_SERVER="tcp:localhost:24713"

请注意，我localhost在这里输入的是逐字逐句的内容 - 并没有将其更改为电脑的名称。我应该这样做吗？

无论如何...当我尝试通过启动 vlc 从远程服务器发送音频时，出现以下错误：

$ vlc
VLC media player 1.0.6 Goldeneye
[0x10dd888] main libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
[0x15f6918] pulse audio output: No. of Audio Channels: 2
[0x15f6918] pulse audio output error: Failed to connect to server: Connection refused
ALSA lib confmisc.c:768:(parse_card) cannot find card '0'
ALSA lib conf.c:4154:(_snd_config_evaluate) function snd_func_card_driver returned error: No such file or directory
ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings
ALSA lib conf.c:4154:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory
ALSA lib confmisc.c:1251:(snd_func_refer) error evaluating name
ALSA lib conf.c:4154:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:4633:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2211:(snd_pcm_open_noupdate) Unknown PCM default
[0x15f6918] oss audio output error: cannot open audio device (/dev/dsp)

帮助！

更新

当我在源终端发出哔声时：

echo -e "\a"

我确实听到了哔声，所以也许这只是 vlc 播放器配置的问题？