As your codec support impedance sense, you may need to file upstream bug report at bugzilla.kernel.org
Sound alsa Table 2: Impedance Sense Bins 000b Return Hex Code 0064h Impedance Level (Ohms) Impedance < 300 General Device Detected Passive Speakers, Headset Speakers 001b 010b 011b 100b 101b 110b 111b 3.2. SPDIF Input 012Ch 028Ah 03E8h 07D0h 0BB8h 2710h 2710h Impedance = 300 +/- 25% 300 > Impedance < 1275 Impedance = 1275 +/- 25% 1275 > Impedance < 2000 Impedance = 2000 +/- 25% > 2000 > 2000 Some Headset Speakers Some Microphones Microphones Microphones Amplified Speakers Amplified Speakers, Line In Amplified Speakers, Line In -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1540372 Title: [Intel DP35DP, SigmaTel STAC9271D, Green Speaker, Rear] Underruns, dropouts or crackling sound To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1540372/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
