I have an iMac 9,1 with the same problem: no audio from internal speakers or headphone jack. The solution did not fix my problem, and I think you mean "/etc/modprobe.d/alsa-base.conf"
$ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: NVidia [HDA NVidia], device 0: ALC885 Analog [ALC885 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: NVidia [HDA NVidia], device 1: ALC885 Digital [ALC885 Digital] Subdevices: 1/1 Subdevice #0: subdevice #0
I have an iMac 9,1 with the same problem: no audio from internal speakers or headphone jack. The solution did not fix my problem, and I think you mean "/etc/modprobe. d/alsa- base.conf"
$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: NVidia [HDA NVidia], device 0: ALC885 Analog [ALC885 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 1: ALC885 Digital [ALC885 Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0