我试图让我的 Jabra BIZ 2400 USB 耳机在我的 Debian Jessie 安装上正常工作，但我从耳机中没有得到任何结果。
我已经安装了 Audacity 来进行测试，它会录制音频，但随后会以 400% 的速度播放（吱吱作响且速度很快），尽管它持续了我所说的“测试 1、2、3，测试”的三秒。
从XTronics Wiki 上的 Debian Sound它建议执行以下操作来安装：
apt-get install alsa-base alsamixergui alsa-oss alsaplayer-alsa alsaplayer-common
alsaplayer-gtk alsaplayer-oss alsa-tools alsa-tools-gui alsa-utils bluez-alsa
gstreamer0.10-alsa libsox-fmt-alsa jackd jackd2 jackeq jack-rack jack-stdio
jack-tools pulseaudio-module-jack qjackctl qjackrcd slv2-jack vlc-plugin-jack
pulseaudio pulseaudio-esound-compat pulseaudio-module-gconf
pulseaudio-module-jack pulseaudio-module-x11 pulseaudio-module-zeroconf
pulseaudio-utils vlc-plugin-pulse pavucontrol
这将删除音频/视频设置中的所有“首选设备”选择，将其替换为 PulseAudio 声音服务器，以及附加选项卡“音频硬件设置”，在硬件中选择 Jabra BIZ 2400 USB 以及数字立体声输出/模拟单声道输入和播放（Jabra BIZ 2400 USB 数字立体声/数字输出 (S/PDIF)）。
但测试按钮（左前/右前）没有任何作用。
有任何想法吗。
编辑：不知道它是否相关，但是在寻找音频相关程序来检查我的机器时，我发现[Jack Audio Connection Kit]，它在启动时抛出错误，并带有以下注释：
22:51:00.459 Patchbay deactivated.
22:51:00.463 Statistics reset.
22:51:00.485 ALSA connection change.
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
22:51:00.492 ALSA connection graph change.
22:51:03.153 JACK is starting...
22:51:03.153 /usr/bin/jackd -dalsa -dhw:0 -r48000 -p1024 -n2
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
22:51:03.158 JACK was started with PID=7171.
no message buffer overruns
no message buffer overruns
no message buffer overruns
jackdmp 1.9.10
Copyright 2001-2005 Paul Davis and others.
Copyright 2004-2014 Grame.
jackdmp comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details
JACK server starting in realtime mode with priority 10
self-connect-mode is "Don't restrict self connect requests"
audio_reservation_init
Acquire audio card Audio0
creating alsa driver ... hw:0|hw:0|1024|2|48000|0|0|nomon|swmeter|-|32bit
ALSA: Cannot open PCM device alsa_pcm for playback. Falling back to capture-only mode
Cannot initialize driver
JackServer::Open failed with -1
Failed to open server
22:51:03.261 JACK was stopped
22:51:05.139 JACK is starting...
22:51:05.140 /usr/bin/jackd -dalsa -dhw:0 -r48000 -p1024 -n2
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
22:51:05.143 JACK was started with PID=7178.
no message buffer overruns
no message buffer overruns
no message buffer overruns
jackdmp 1.9.10
Copyright 2001-2005 Paul Davis and others.
Copyright 2004-2014 Grame.
jackdmp comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details
JACK server starting in realtime mode with priority 10
self-connect-mode is "Don't restrict self connect requests"
audio_reservation_init
Acquire audio card Audio0
creating alsa driver ... hw:0|hw:0|1024|2|48000|0|0|nomon|swmeter|-|32bit
ALSA: Cannot open PCM device alsa_pcm for playback. Falling back to capture-only mode
Cannot initialize driver
JackServer::Open failed with -1
Failed to open server
22:51:05.226 JACK was stopped
22:51:07.298 Could not connect to JACK server as client. - Overall operation failed. - Unable to connect to server. Please check the messages window for more info.
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
23:00:37.347 JACK is starting...
23:00:37.348 /usr/bin/jackd -dalsa -dhw:0 -r48000 -p1024 -n2
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
23:00:37.354 JACK was started with PID=7903.
no message buffer overruns
no message buffer overruns
no message buffer overruns
jackdmp 1.9.10
Copyright 2001-2005 Paul Davis and others.
Copyright 2004-2014 Grame.
jackdmp comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details
JACK server starting in realtime mode with priority 10
self-connect-mode is "Don't restrict self connect requests"
audio_reservation_init
Acquire audio card Audio0
creating alsa driver ... hw:0|hw:0|1024|2|48000|0|0|nomon|swmeter|-|32bit
ALSA: Cannot open PCM device alsa_pcm for playback. Falling back to capture-only mode
Cannot initialize driver
JackServer::Open failed with -1
Failed to open server
23:00:37.444 JACK was stopped
23:00:39.458 Could not connect to JACK server as client. - Overall operation failed. - Unable to connect to server. Please check the messages window for more info.
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
Object::connect: No such signal org::freedesktop::UPower::DeviceAdded(QString)
Object::connect: No such signal org::freedesktop::UPower::DeviceRemoved(QString)