[alsa-devel] partial fix for bug #2708: [ALSA - driver] PCI - hda-intel

Jeffrey Arbuckle jbarbuc at gmail.com
Mon Apr 23 04:29:35 CEST 2007

Using alsa-driver-1.0.14rc3 with an iMac Core2 Duo 24" results in audio only
available through the headphones.  Additionally the sound is very low, even
the highest mixer setting.

This problem is very similar to the bug recently fixed in 1.0.14rc2 with the
on the MacPro.   I was able to make a patch that applies the same fix for
the MacPro
to my iMac.   The patch fixes the audio so that the built in speakers work
but now the headphones do not work at all.   Obviously some more work is
on this.

The patch I've attached just adds my device's' PCI SSID to an existing
switch statement.

I am willing to provide some more testing if necessary.

Here is my systems info:

00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition
Audio Controller (rev 02)
        Subsystem: Realtek Semiconductor Co., Ltd. Unknown device 0885
        Flags: bus master, fast devsel, latency 0, IRQ 21
        Memory at 92400000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: [50] Power Management version 2
        Capabilities: [60] Message Signalled Interrupts: Mask- 64bit+
Queue=0/0 Enable-
        Capabilities: [70] Express Unknown type IRQ 0

# cat /proc/asound/card0/codec#0
Codec: Realtek ALC885
Address: 0
Vendor Id: 0x10ec0885
Subsystem Id: 0x106b1000
Revision Id: 0x100103

# cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version 1.0.14rc3.
Compiled on Apr 22 2007 for kernel 2.6.20-15-generic (SMP).

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