Audio
This page lists available options to get sound input and output on the UP/UP^2 board.
Audio output through HDMI and DP works on both Windows and Linux, specifically Ubuntu 16.04 and 18.04.
If you switch from Linux to Windows or vice versa and you need audio over the HDMI you will also need to change the audio setting in BIOS, to do this:
- Press DEL during boot.
- It will ask for a bios password but you can leave this blank and press enter.
For audio in Windows:
- Navigate to the “Chipset” Tab
- Choose “South Bridge”
- Choose “HD-Audio Configuration”
- Set HD-Audio DSP to “[Disable]”
For audio in Linux:
- Navigate to the “Chipset” Tab
- Choose “South Bridge”
- Choose “HD-Audio Configuration”
- Set HD-Audio DSP to “[Enable]”
For audio in Linux on UP Board:
- CRB Setup
- CRB Chipset
- South Bridge
- Audio Configuration
- Set LPE Audio Support to “[Disabled]”
The 40-pin GPIO header has pins connected to I2S for audio. Support is planned, but currently unavailable on official releases.
Analog audio USB adapters should work out of the box. If a detected adapter is not producing any sound, check that the audio levels are correct and that the right card is selected from your system mixer panel or audio application settings.
- Texas Instruments PCM2912A
- CSL Computer GmbH Mod-Nr.: 20613
Audio output through HDMI and display port works on both Windows and Linux.
The 40-pin GPIO header and the exHAT have pins connected to I2S for audio. Support is planned, but currently unavailable on official releases.
The I²S support is available from 5.10 mainline Kernel only for Whiskey Lake-U, Apollo Lake and Cherry Trail platform on Linux, but it has not been tested/validated internally (latest available validated kernel are 4.19/5.0).
