因此，我尝试使用我的笔记本电脑（Asus GU501）通过 HDMI 电缆在电视上观看电影，但 Ubuntu 16.04 在启动时出现了错误（与图形配置有关；带有黑屏的对话框）。
我重启了系统（按住电源按钮 10 秒）。当我再次打开它时，扬声器不再工作；即使在 Windows 10 或 Arch 中也不工作。笔记本电脑启动时的 Post Logo Animation（ROG 徽标）不会像往常一样重现任何音效。
Alsa 一直显示内置扬声器作为输出选项，我可以使用 P2 输出，lscpci -v 显示该设备。
Ubuntu 有没有可能关闭了扬声器？或者发生了与安全启动相关的问题？
请帮忙 :<
0:00.0 Host bridge: Intel Corporation Device 3ec4 (rev 07)
Subsystem: ASUSTeK Computer Inc. Device 1fd0
Flags: bus master, fast devsel, latency 0
Capabilities: <access denied>
00:01.0 PCI bridge: Intel Corporation Sky Lake PCIe Controller (x16) (rev 07) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0, IRQ 122
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 00004000-00004fff
Memory behind bridge: dc000000-dd0fffff
Prefetchable memory behind bridge: 00000000b0000000-00000000c1ffffff
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp
00:02.0 VGA compatible controller: Intel Corporation Device 3e9b (prog-if 00 [VGA controller])
DeviceName: Second VGA
Subsystem: ASUSTeK Computer Inc. Device 1fd0
Flags: bus master, fast devsel, latency 0, IRQ 129
Memory at db000000 (64-bit, non-prefetchable) [size=16M]
Memory at 70000000 (64-bit, prefetchable) [size=256M]
I/O ports at 5000 [size=64]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: i915
Kernel modules: i915
00:04.0 Signal processing controller: Intel Corporation Skylake Processor Thermal Subsystem (rev 07)
Subsystem: ASUSTeK Computer Inc. Skylake Processor Thermal Subsystem
Flags: fast devsel, IRQ 16
Memory at dd310000 (64-bit, non-prefetchable) [size=32K]
Capabilities: <access denied>
Kernel driver in use: proc_thermal
Kernel modules: processor_thermal_device
00:08.0 System peripheral: Intel Corporation Sky Lake Gaussian Mixture Model
Subsystem: ASUSTeK Computer Inc. Skylake Gaussian Mixture Model
Flags: fast devsel, IRQ 255
Memory at dd32c000 (64-bit, non-prefetchable) [disabled] [size=4K]
Capabilities: <access denied>
00:12.0 Signal processing controller: Intel Corporation Device a379 (rev 10)
Subsystem: ASUSTeK Computer Inc. Device 1fd0
Flags: fast devsel, IRQ 16
Memory at dd32b000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: intel_pch_thermal
Kernel modules: intel_pch_thermal
00:14.0 USB controller: Intel Corporation Device a36d (rev 10) (prog-if 30 [XHCI])
Subsystem: ASUSTeK Computer Inc. Device 201f
Flags: bus master, medium devsel, latency 0, IRQ 126
Memory at dd300000 (64-bit, non-prefetchable) [size=64K]
Capabilities: <access denied>
Kernel driver in use: xhci_hcd
00:14.2 RAM memory: Intel Corporation Device a36f (rev 10)
Subsystem: Intel Corporation Device 7270
Flags: fast devsel
Memory at dd322000 (64-bit, non-prefetchable) [disabled] [size=8K]
Memory at dd32a000 (64-bit, non-prefetchable) [disabled] [size=4K]
Capabilities: <access denied>
00:14.3 Network controller: Intel Corporation Device a370 (rev 10)
DeviceName: WLAN
Subsystem: Intel Corporation Device 0034
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at dd31c000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi
00:15.0 Serial bus controller [0c80]: Intel Corporation Device a368 (rev 10)
Subsystem: ASUSTeK Computer Inc. Device 1fd0
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at a2400000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: intel-lpss
Kernel modules: intel_lpss_pci
00:15.1 Serial bus controller [0c80]: Intel Corporation Device a369 (rev 10)
Subsystem: ASUSTeK Computer Inc. Device 1fd0
Flags: bus master, fast devsel, latency 0, IRQ 17
Memory at a2401000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: intel-lpss
Kernel modules: intel_lpss_pci
00:16.0 Communication controller: Intel Corporation Device a360 (rev 10)
Subsystem: ASUSTeK Computer Inc. Device 1fd0
Flags: bus master, fast devsel, latency 0, IRQ 137
Memory at dd327000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: mei_me
Kernel modules: mei_me
00:17.0 SATA controller: Intel Corporation Device a353 (rev 10) (prog-if 01 [AHCI 1.0])
Subsystem: ASUSTeK Computer Inc. Device 1fd0
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 127
Memory at dd320000 (32-bit, non-prefetchable) [size=8K]
Memory at dd326000 (32-bit, non-prefetchable) [size=256]
I/O ports at 5090 [size=8]
I/O ports at 5080 [size=4]
I/O ports at 5060 [size=32]
Memory at dd325000 (32-bit, non-prefetchable) [size=2K]
Capabilities: <access denied>
Kernel driver in use: ahci
Kernel modules: ahci
00:1b.0 PCI bridge: Intel Corporation Device a340 (rev f0) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0, IRQ 123
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
I/O behind bridge: 00006000-00006fff
Memory behind bridge: a2000000-a21fffff
Prefetchable memory behind bridge: 00000000a2200000-00000000a23fffff
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1b.4 PCI bridge: Intel Corporation Device a32c (rev f0) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0, IRQ 124
Bus: primary=00, secondary=03, subordinate=3b, sec-latency=0
I/O behind bridge: 00007000-00007fff
Memory behind bridge: c4000000-da0fffff
Prefetchable memory behind bridge: 0000000080000000-00000000a1ffffff
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1d.0 PCI bridge: Intel Corporation Device a330 (rev f0) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0, IRQ 125
Bus: primary=00, secondary=3c, subordinate=3c, sec-latency=0
I/O behind bridge: 00003000-00003fff
Memory behind bridge: dd200000-dd2fffff
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1f.0 ISA bridge: Intel Corporation Device a30d (rev 10)
Subsystem: ASUSTeK Computer Inc. Device 1fd0
Flags: bus master, medium devsel, latency 0
00:1f.3 Audio device: Intel Corporation Device a348 (rev 10)
Subsystem: ASUSTeK Computer Inc. Device 15be
Flags: bus master, fast devsel, latency 32, IRQ 153
Memory at dd318000 (64-bit, non-prefetchable) [size=16K]
Memory at dd100000 (64-bit, non-prefetchable) [size=1M]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
00:1f.4 SMBus: Intel Corporation Device a323 (rev 10)
Subsystem: ASUSTeK Computer Inc. Device 1fd0
Flags: medium devsel, IRQ 255
Memory at dd324000 (64-bit, non-prefetchable) [size=256]
I/O ports at efa0 [size=32]
Kernel modules: i2c_i801
00:1f.5 Serial bus controller [0c80]: Intel Corporation Device a324 (rev 10)
Subsystem: Intel Corporation Device 7270
Flags: fast devsel
Memory at fe010000 (32-bit, non-prefetchable) [size=4K]
01:00.0 VGA compatible controller: NVIDIA Corporation Device 1c20 (rev a1) (prog-if 00 [VGA controller])
DeviceName: VGA
Subsystem: ASUSTeK Computer Inc. Device 185e
Flags: bus master, fast devsel, latency 0, IRQ 255
Memory at dc000000 (32-bit, non-prefetchable) [size=16M]
Memory at b0000000 (64-bit, prefetchable) [size=256M]
Memory at c0000000 (64-bit, prefetchable) [size=32M]
I/O ports at 4000 [disabled] [size=128]
Expansion ROM at dd000000 [disabled] [size=512K]
Capabilities: <access denied>
Kernel modules: nvidiafb, nouveau, nvidia_390, nvidia_390_drm
3c:00.0 Non-Volatile memory controller: Kingston Technologies Device 5008 (rev 01) (prog-if 02 [NVM Express])
Subsystem: Kingston Technologies Device 5008
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at dd200000 (64-bit, non-prefetchable) [size=16K]
I/O ports at 3000 [size=8]
Capabilities: <access denied>
Kernel driver in use: nvme
Kernel modules: nvme