ihatemundays

You are correct. I had an unfortunate ground loop because my power supply was feeding both the audio amplifier and the Tinker Board. I fed the audio amplifier's power by the 2 and 6 pins on the GPIO of the Tinker Board, and no more groundloop. But then I had an issue where I couldn't get it to recognize the hw:0,2 device properly. But I figured that out too! Hopefully this will help someone. Instead of adding hw:0,2 to default.pa (it was already defined as OnBoard_D2), I added it to /etc/asound.conf. Adding this configuration will add it as the default on startup, handle multi channels, etc. pcm.!default { type plug slave.pcm "OnBoard_D2" } ctl.!default { type hw card OnBoard device 2 } Regards!

I'm having a little difficulty getting audio to work through my audio jack on an original Tinker Board (Rev 1.2). It produces a hissing sound either through two separate devices, both that work fine on my other PCs. I get sound through HDMI or USB fine, just not the audio jack. Based on the specifications, I believe the Realtek chip uses an ALC4040 codec for audio, but can't find the appropriate drivers. I saw an issue using the Realtek ALC4030U utility tool, but testing it didn't seem to recognize my audio chipset and wouldn't let me download ALC4040.rfw nor install it. It seems similar to this issue: https://tinker-board.asus.com/forum/index.php?/topic/15304-tinker-board-r20-audio-problem-hissing-noise/ But again, those steps only work for Tinker Board R2.0, not the original Tinker Board. Any help to fix my issues? Thanks!