** Summary changed:

- Some ThinkPad systems no HDMI sound when using the nvidia GPU
+ ThinkPad systems have no HDMI sound when using the nvidia GPU

** Tags added: originate-from-1756020 sutton

** Description changed:

- Some ThinkPad systems have a power-saving feature that turns off HDMI audio 
device in Windows, but NVidia Linux driver does not support this feature. As a 
result, HDMI audio will not work on Linux.
-     
- A BIOS workaround is added with an OEM_OSI string 
"Linux-Lenovo-NV-HDMI-Audio" which needs enabling in Linux kernel too.
+ Some ThinkPad systems have a power-saving feature that turns off Nvidia
+ HDMI audio device in Windows, but NVidia Linux driver does not support
+ this feature. As a result, HDMI audio will not work on Linux.
+ 
+ A BIOS workaround is added with an OEM_OSI string "Linux-Lenovo-NV-HDMI-
+ Audio" which needs enabling in Linux kernel too.

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https://bugs.launchpad.net/bugs/1787058

Title:
  ThinkPad systems have no HDMI sound when using the nvidia GPU

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  In Progress

Bug description:
  Some ThinkPad systems have a power-saving feature that turns off
  Nvidia HDMI audio device in Windows, but NVidia Linux driver does not
  support this feature. As a result, HDMI audio will not work on Linux.

  A BIOS workaround is added with an OEM_OSI string "Linux-Lenovo-NV-
  HDMI-Audio" which needs enabling in Linux kernel too.

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