It seems this bug doesn't apply to me, and that I just needed to find the right documentation, then set the model= parameter. Sorry for the waste of time.
I'll note my solution in case it helps random web searchers, but it's NOT related to this bug. I should also qualify these hints: I just found something that worked for me and don't deeply understand what is going on. == The document with the hint required was ALSA-Configuration.txt's "Module snd-hda-intel" section, online at: http://www.kernel.org/doc/Documentation/sound/alsa/ALSA-Configuration.txt or /usr/share/doc/alsa-base/driver/ALSA-Configuration.txt.gz locally. (It's mentioned in https://help.ubuntu.com/community/SoundTroubleshooting) I set the option in a new file (/etc/modprobe.d/alsa-hda-intel-model.conf): options snd-hda-intel model=6stack-dig (the first one I tried worked with my headphones, that's all I need) I applied the change with: $ sudo alsa force-reload # BEWARE kills you're audio using processes $ cat /sys/module/snd_hda_intel/parameters/model This fixed the stutters/crackles at high volume for via both alsa and pulse. I've since discovered the excruciating details: http://www.kernel.org/doc/Documentation/sound/alsa/HD-Audio.txt http://www.kernel.org/doc/Documentation/sound/alsa/HD-Audio-Models.txt (Things that didn't help: * Jaunty proposed kernel (I think I already had the patches discussed above) 2.6.28-15-generic #52-Ubuntu SMP Wed Sep 9 10:48:52 UTC 2009 x86_64 GNU/Linux * snd-hda-intel position_fix parameter, description sounded relevant though) -- Crackling / scratching noise using Pulseaudio https://bugs.launchpad.net/bugs/345627 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
