我使用的是 Chillblast Fusion Ares X99 台式机，配有 Gigabyte GA-X99-Gaming 5 Intel X99 主板，使用“板载高清音频”。声音在 Windows 7 中没有问题，但在 Ubuntu 15.04 中没有声音（包括登录前的鼓声），无论是扬声器还是耳机。卸载并重新安装 alsa-base 和 pulseaudio 没有任何区别。
alsamixer 没有出现明显问题（即没有静音），pavucontrol 可以识别我播放音乐的时间。我运行了 Ubuntu“系统测试”，它给出了“suspend/audio_before_suspend”的以下输出：
Traceback (most recent call last): File "/tmp/nest-wq0rkm8o.53da2f0d5daa59cf2d6aa81031bd900071c971e89e30e8d5dd45c710404c5805/audio_settings", line 9, in <module> sys.exit(main()) File "/usr/lib/python3/dist-packages/checkbox_support/scripts/audio_settings.py", line 355, in main store_audio_settings(args.file) File "/usr/lib/python3/dist-packages/checkbox_support/scripts/audio_settings.py", line 213, in store_audio_settings default = default_regex.search(pactl_status).group() AttributeError: 'NoneType' object has no attribute 'group'
类似地，“audio/playback_headphones”的输出是：
Traceback (most recent call last): File "/tmp/nest-td8cf36w.643e5ad0812fcf48d57b503acb6e3791032f1d12d63236f936b818ff72d7a276/audio_settings", line 9, in <module> sys.exit(main()) File "/usr/lib/python3/dist-packages/checkbox_support/scripts/audio_settings.py", line 355, in main store_audio_settings(args.file) File "/usr/lib/python3/dist-packages/checkbox_support/scripts/audio_settings.py", line 213, in store_audio_settings default = default_regex.search(pactl_status).group() AttributeError: 'NoneType' object has no attribute 'group' Attempting to initialize Gstreamer pipeline: audiotestsrc wave=sine freq=512 ! audioconvert ! audioresample ! autoaudiosink Pipeline initialized, now starting playback. ERROR:root:Unable to restore settings because settings file is invalid
“audio/playback_auto” 的输出是：
Traceback (most recent call last): File "/tmp/nest-2mdgbmu7.c0275b29d727bcbab35c795ee540f8c7c7387b66c402d24f74b7ebb75fa18270/audio_settings", line 9, in <module> sys.exit(main()) File "/usr/lib/python3/dist-packages/checkbox_support/scripts/audio_settings.py", line 355, in main store_audio_settings(args.file) File "/usr/lib/python3/dist-packages/checkbox_support/scripts/audio_settings.py", line 213, in store_audio_settings default = default_regex.search(pactl_status).group() AttributeError: 'NoneType' object has no attribute 'group' Attempting to initialize Gstreamer pipeline: audiotestsrc wave=sine freq=512 ! audioconvert ! audioresample ! autoaudiosink Pipeline initialized, now starting playback. ERROR:root:Unable to restore settings because settings file is invalid
恐怕我在声卡方面的探索并没有给我带来任何成果，而且我不知道如何最好地解决这个问题。任何提示和建议都将不胜感激。