I was having the same problems and the information here definitely improved things - so maybe it'll help things along here too:
https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4086 ** Bug watch added: ALSA Bug Tracker #4086 https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4086 -- Headphones don't work for aluminum iMac https://bugs.launchpad.net/bugs/360866 You received this bug notification because you are a member of Mactel Support, which is the registrant for Mactel Support. Status in Mactel Support: New Bug description: Hello! For the most part, the Jaunty beta is working very nicely on my intel iMac. This aluminum 20" imac reports 7,1 using dmidecode. Under 8.04 and 8.1 as well, I have been able to hear lower quality sounds through the built-in speakers using either of these additions to alsa-base.conf: options snd-hda-intel model=mbp3 or options snd-hda-intel model=imac24. Unfortunately, the sound quality seems impaired, and I haven't been able to get the headphones to work at all. Using the default alsa-base.conf gives very low amplitude headphone output that requires a lot of amplification to hear; no internal speaker output is heard with the default. Here's the output from aplay -l: **** List of PLAYBACK Hardware Devices **** card 0: Intel [HDA Intel], device 0: ALC885 Analog [ALC885 Analog] Subdevices: 0/1 Subdevice #0: subdevice #0 card 0: Intel [HDA Intel], device 1: ALC885 Digital [ALC885 Digital] Subdevices: 1/1 Subdevice #0: subdevice #0 cat /proc/asound/cards: 0 [Intel ]: HDA-Intel - HDA Intel HDA Intel at 0x90700000 irq 20 I have also attached the output from dmidecode. Please let me know if I can furnish any other information or assist in the resolution of this sound problem. Aloha, -Jeff Mings _______________________________________________ Mailing list: https://launchpad.net/~mactel-support Post to : [email protected] Unsubscribe : https://launchpad.net/~mactel-support More help : https://help.launchpad.net/ListHelp
