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While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:

apport-collect 1821936

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
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This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1821936

Title:
  ALC274 unsupported

Status in alsa-driver package in Ubuntu:
  New
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I find this to be an issue with current LTS 18.04's latest 4.19
  kernel.  I tested this on mainline 4.20 and 5.0 kernels as well.

  No audio because ALC274 not properly loaded for use, so no audio
  output.  A related card had a similar bug, which was fixed, and may be
  of use in resolving this one:
  https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1784485

  
  # cat /proc/asound/card0/codec* | grep Codec
  Codec: Realtek ALC274
  Codec: Intel Kabylake HDMI

  # cat /proc/asound/card0/pcm0c/info
  card: 0
  device: 0
  subdevice: 0
  stream: CAPTURE
  id: ALC274 Analog
  name: ALC274 Analog
  subname: subdevice #0
  class: 0
  subclass: 0
  subdevices_count: 1
  subdevices_avail: 0

  aplay -l
  **** List of PLAYBACK Hardware Devices ****
  card 0: PCH [HDA Intel PCH], device 0: ALC274 Analog [ALC274 Analog]
    Subdevices: 1/1
    Subdevice #0: subdevice #0
  card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
    Subdevices: 1/1
    Subdevice #0: subdevice #0
  card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1]
    Subdevices: 1/1
    Subdevice #0: subdevice #0
  card 0: PCH [HDA Intel PCH], device 8: HDMI 2 [HDMI 2]
    Subdevices: 1/1
    Subdevice #0: subdevice #0
  card 0: PCH [HDA Intel PCH], device 9: HDMI 3 [HDMI 3]
    Subdevices: 1/1
    Subdevice #0: subdevice #0
  card 0: PCH [HDA Intel PCH], device 10: HDMI 4 [HDMI 4]
    Subdevices: 1/1
    Subdevice #0: subdevice #0

  d# hwinfo --sound
  21: PCI 1f.3: 0403 Audio device                                 
    [Created at pci.378]
    Unique ID: nS1_.WnojYJLVCm0
    SysFS ID: /devices/pci0000:00/0000:00:1f.3
    SysFS BusID: 0000:00:1f.3
    Hardware Class: sound
    Model: "Intel Audio device"
    Vendor: pci 0x8086 "Intel Corporation"
    Device: pci 0xa348 
    SubVendor: pci 0x1043 "ASUSTeK Computer Inc."
    SubDevice: pci 0x31d0 
    Revision: 0x10
    Driver: "snd_hda_intel"
    Driver Modules: "snd_hda_intel"
    Memory Range: 0xdd398000-0xdd39bfff (rw,non-prefetchable)
    Memory Range: 0xdd100000-0xdd1fffff (rw,non-prefetchable)
    IRQ: 145 (663 events)
    Module Alias: "pci:v00008086d0000A348sv00001043sd000031D0bc04sc03i80"
    Driver Info #0:
      Driver Status: snd_hda_intel is active
      Driver Activation Cmd: "modprobe snd_hda_intel"
    Config Status: cfg=new, avail=yes, need=no, active=unknown

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