Hi,

I’m experiencing problems with my audio output, maybe someone here can help me?

Problem
I can hear sound through the speakers of my Notebook, but if I put it in my docking station, I get no sound through HDMI and no sound through the Headphone-Output on the docking station.

Setup

  • Thinkpad T460p
  • Thinkpad Ultra Dock
  • Samsung SyncMaster external Monitor with HDMI
  • Updated Antergos, Linux Mainline (because I have freezing issues with the default arch kernel)

$ lspci -nn

00:00.0 Host bridge [0600]: Intel Corporation Skylake Host Bridge/DRAM Registers [8086:1910] (rev 07)
00:02.0 VGA compatible controller [0300]: Intel Corporation Skylake Integrated Graphics [8086:191b] (rev 06)
00:14.0 USB controller [0c03]: Intel Corporation Sunrise Point-H USB 3.0 xHCI Controller [8086:a12f] (rev 31)
00:14.2 Signal processing controller [1180]: Intel Corporation Sunrise Point-H Thermal subsystem [8086:a131] (rev 31)
00:16.0 Communication controller [0780]: Intel Corporation Sunrise Point-H CSME HECI #1 [8086:a13a] (rev 31)
00:16.3 Serial controller [0700]: Intel Corporation Sunrise Point-H KT Redirection [8086:a13d] (rev 31)
00:17.0 SATA controller [0106]: Intel Corporation Sunrise Point-H SATA Controller [AHCI mode] [8086:a103] (rev 31)
00:1c.0 PCI bridge [0604]: Intel Corporation Sunrise Point-H PCI Express Root Port #1 [8086:a110] (rev f1)
00:1c.4 PCI bridge [0604]: Intel Corporation Sunrise Point-H PCI Express Root Port #5 [8086:a114] (rev f1)
00:1f.0 ISA bridge [0601]: Intel Corporation Sunrise Point-H LPC Controller [8086:a14d] (rev 31)
00:1f.2 Memory controller [0580]: Intel Corporation Sunrise Point-H PMC [8086:a121] (rev 31)
00:1f.3 Audio device [0403]: Intel Corporation Sunrise Point-H HD Audio [8086:a170] (rev 31)
00:1f.4 SMBus [0c05]: Intel Corporation Sunrise Point-H SMBus [8086:a123] (rev 31)
00:1f.6 Ethernet controller [0200]: Intel Corporation Ethernet Connection (2) I219-LM [8086:15b7] (rev 31)
03:00.0 Network controller [0280]: Intel Corporation Wireless 8260 [8086:24f3] (rev 3a)
04:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS522A PCI Express Card Reader [10ec:522a] (rev 01)

cat /proc/asound/modules

 0 snd_hda_intel

aplay -l

**** Liste der Hardware-Geräte (PLAYBACK) ****
Karte 0: PCH [HDA Intel PCH], Gerät 0: ALC293 Analog [ALC293 Analog]
  Sub-Geräte: 0/1
  Sub-Gerät #0: subdevice #0
Karte 0: PCH [HDA Intel PCH], Gerät 3: HDMI 0 [HDMI 0]
  Sub-Geräte: 1/1
  Sub-Gerät #0: subdevice #0
Karte 0: PCH [HDA Intel PCH], Gerät 7: HDMI 1 [HDMI 1]
  Sub-Geräte: 1/1
  Sub-Gerät #0: subdevice #0
Karte 0: PCH [HDA Intel PCH], Gerät 8: HDMI 2 [HDMI 2]
  Sub-Geräte: 1/1
  Sub-Gerät #0: subdevice #0