The fix suggested by Stephan Hilb worked on my system. After I've added "options snd-hda-intel position_fix=2 bdl_pos_adj=-1" to the end of /etc/modprobe.d/alsa-base.conf - the noise is gone.
I have Realtek ALC892, which came with ASUS motherboard. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/596249 Title: high-pitch crackling background noise when recording from microphone To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/596249/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
