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Trouble with 2011 iMac Sound Card On Debian

Hi all,

So I installed Debian on a 2011 iMac and it is working ok, except for the sound. There is no sound from either the speaker or the headphone jack.

When I go to the system settings, the volum option is completely greyed out.

Running cat /proc/asound/cards in UXTerm returned this:

0  [PCH             ]:HDA-Intel - HDA Intel PCH
                           HDA Intel PCH at 0xa8900000 irq 47
1 [HDMI            ]: HDA-Intel - HDA ATI HDMI
                            HDA ATI HDMI at 0xa8840000 irq 48

I am wondering why the speaker and headphone jack would not work when the sound card is recognized? Thanks very much.

debian sund card info.PNG

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