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从 14.04 更新至 16.04 后未检测到 HDMI 音频

tag-icon • tag-icon 16.04 sound hdmi
从 14.04 更新至 16.04 后未检测到 HDMI 音频

更新系统后，音频设置中的所有 HDMI 输出都变灰了。我重新安装后alsa-base，HDMI 输出完全消失了。我还尝试重新安装视频驱动程序，安装了一个英特尔的驱动程序。我编辑/etc/default/grub并添加了它，GRUB_CMDLINE_LINUX_DEFAULT="i915.preliminary_hw_support=1但没有效果。我还应该检查什么才能让它再次工作？

 lspci -vnn | grep VGA -A 12
00:02.0 VGA compatible controller [0300]: Intel Corporation Haswell-ULT 
Integrated Graphics Controller [8086:0a16] (rev 09) (prog-if 00 [VGA controller])
    DeviceName:  Onboard IGD
    Subsystem: Gigabyte Technology Co., Ltd Haswell-ULT Integrated Graphics Controller [1458:d000]
    Flags: bus master, fast devsel, latency 0, IRQ 11
    Memory at f7800000 (64-bit, non-prefetchable) [size=4M]
    Memory at e0000000 (64-bit, prefetchable) [size=256M]
    I/O ports at f000 [size=64]
    Expansion ROM at <unassigned> [disabled]
    Capabilities: <access denied>
    Kernel modules: i915


aplay -l
**** List of PLAYBACK Hardware Devices ****
xcb_connection_has_error() returned true
card 0: PCH [HDA Intel PCH], device 0: ALC269VC Analog [ALC269VC Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 1: ALC269VC Digital [ALC269VC Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

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