我的内置扬声器上的 Skype 音量一段时间内都很好，但突然变得非常低。它仍然可以使用，但只能在安静的房间中使用。
唯一的内部 Skype 声音设置是“声音设备”，我可以在里面播放测试声音（声音非常低）。此外，“允许 Skype 调整我的混音器级别”也没什么区别。Ubuntu 的声音测试音量是最大。
我不确定发生了什么变化。工具栏中的典型“输出音量”可以移动到 100% 以上，并且不会失真。音量alsamixer已最大化。我在alsamixer声音设备下找到了一些频道1 HDA Intel PCH。没有需要调整的额外频道，我全部尝试过了。
aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: HDMI [HDA Intel HDMI], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: HDMI [HDA Intel HDMI], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: HDMI [HDA Intel HDMI], device 8: HDMI 2 [HDMI 2]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: PCH [HDA Intel PCH], device 0: ALC255 Analog [ALC255 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
lspci
00:03.0 Audio device: Intel Corporation Broadwell-U Audio Controller (rev 09)
00:14.0 USB controller: Intel Corporation Wildcat Point-LP USB xHCI Controller (rev 03)
00:16.0 Communication controller: Intel Corporation Wildcat Point-LP MEI Controller #1 (rev 03)
00:1b.0 Audio device: Intel Corporation Wildcat Point-LP High Definition Audio Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #1 (rev e3)
00:1c.3 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #4 (rev e3)
00:1c.4 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #5 (rev e3)
00:1d.0 USB controller: Intel Corporation Wildcat Point-LP USB EHCI Controller (rev 03)
00:1f.0 ISA bridge: Intel Corporation Wildcat Point-LP LPC Controller (rev 03)
00:1f.2 SATA controller: Intel Corporation Wildcat Point-LP SATA Controller [AHCI Mode] (rev 03)
00:1f.3 SMBus: Intel Corporation Wildcat Point-LP SMBus Controller (rev 03)
07:00.0 Network controller: Intel Corporation Wireless 7265 (rev 48)
08:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Opal XT [Radeon R7 M265] (rev ff)
lsusb
Bus 001 Device 002: ID 8087:8001 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 006: ID 8087:0a2a Intel Corp.
Bus 002 Device 005: ID 04f3:2098 Elan Microelectronics Corp.
Bus 002 Device 004: ID 0bda:5754 Realtek Semiconductor Corp.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
uname -a
Linux jcalfee-Inspiron-7548 3.13.0-57-generic #95-Ubuntu SMP Fri Jun 19 09:28:15 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
答案1
拨打 Skype
Echo / Sound test service（callto://echo123）进入右上角的系统菜单：
点击System Settings然后Sound
点击Applications选项卡
当您仍在使用 Skype 通话时，您将看到 Skype 音量。
根据您的需求进行调整（包括 >100%）