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[SDW] Bus clash on rt722

Open bardliao opened this issue 8 months ago • 0 comments

Bus clash will happen in the following steps

  1. Open the headset capture device arecord -Dhw:0,1 -fDAT /dev/null &
  2. Open the SoundWire DMIC deive arecord -Dhw:0,4 -fDAT /dev/null &
  3. Run playback on headphone aplay -Dhw:0,0 -fDAT /dev/zero &
  4. Run playback on speaker aplay -Dhw:0,2 -fDAT /dev/zero &
  5. Turn off headphone playback

Bus clash will happen after step 5. If not, switch the playback devices repeatedly. I.e. Open the speaker playback than close the headphone playback. Then open the headphone playback and close the speaker playback.

dmesg_rt722_bus_clash.txt

bardliao avatar Apr 29 '25 09:04 bardliao