I'm on a HP dv4 laptop and have the same problem after beta update. Iǘe been looking up the issue in some forums and it looks like it affects quite a few people. The sad thing is that I could not for the life of me make my sound work correctly in jaunty, and it worked out of the box all the way back in karmic alpha 3... Now it's broke again....
The buzzing sound is really annoying and the internal mic stopped working. lspci | grep audio 00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA) 01:05.1 Audio device: ATI Technologies Inc RS780 Azalia controller lsmod | grep snd snd_hda_codec_atihdmi 4320 1 snd_hda_codec_idt 72976 1 snd_seq_dummy 3460 0 snd_hda_intel 31880 4 snd_hda_codec 87584 3 snd_hda_codec_atihdmi,snd_hda_codec_idt,snd_hda_intel snd_hwdep 9352 1 snd_hda_codec snd_pcm_oss 44704 0 snd_mixer_oss 18976 1 snd_pcm_oss snd_seq_oss 33440 0 snd_pcm 93160 4 snd_hda_intel,snd_hda_codec,snd_pcm_oss snd_seq_midi 8192 0 snd_rawmidi 27360 1 snd_seq_midi snd_seq_midi_event 8448 2 snd_seq_oss,snd_seq_midi snd_seq 60608 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event snd_timer 26992 2 snd_pcm,snd_seq snd_seq_device 8308 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq snd 77096 19 snd_hda_codec_idt,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm_oss,snd_mixer_oss,snd_seq_oss,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device soundcore 9088 1 snd snd_page_alloc 10928 2 snd_hda_intel,snd_pcm -- Annoying buzzing sound from speakers when nothing is playing https://bugs.launchpad.net/bugs/449672 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs