On Monday 20 April 2009, Tino Keitel wrote:

Hi,

since 2.6.29 and also with 2.6.29.1 the left audio channel of the digital output of my Mac mini Core 2 Duo is noisy. This didn't happen with 2.6.28. Unloading snd-hda-intel and reloading it does fix the noisy sound.

This happened with some older versions of the Linux kernel (with an older Mac mini Core Duo, I don't remeber which kernel version), but got fixed at some point. Now it happens again with 2.6.29.

Here is the dmesg output for the sound hardware:

HDA Intel 0000:00:1b.0: PCI INT A -> GSI 22 (level, low) -> IRQ 22 HDA Intel 0000:00:1b.0: setting latency timer to 64 hda_codec: STAC922x, Apple subsys_id=100 input: HDA Intel Line In at Ext Left Jack as /class/input/input18 input: HDA Intel Mic at Ext Left Jack as /class/input/input19 input: HDA Intel HP Out at Ext Left Jack as /class/input/input20

Any hints what I could try to fix this, maybe some commit that I should try to revert?

Well, no.

Still, you might try the current Linus' tree.

Best, Rafael