[alsa-devel] Regarding Sound on Acer Aspire 6935G

[Emilio López]

I had a little free time, so I decided to play a little with alsa. I
copied the mic verbs from the old model to this new one and it seems
to be working fine. Here is the patch for that

diff -wur alsa-driver/sound/pci/hda/patch_realtek.c
alsa-driver-patched/sound/pci/hda/patch_realtek.c
--- alsa-driver/sound/pci/hda/patch_realtek.c	2009-06-22
12:50:12.000000000 -0300
+++ alsa-driver-patched/sound/pci/hda/patch_realtek.c	2009-06-23
14:57:40.511853856 -0300
@@ -1471,6 +1471,10 @@
 static struct hda_verb alc888_acer_aspire_6530g_verbs[] = {
 /* Bias voltage on for external mic port */
 	{0x18, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_IN | PIN_VREF80},
+/* Front Mic: set to PIN_IN (empty by default) */
+	{0x12, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_IN},
+/* Unselect Front Mic by default in input mixer 3 */
+	{0x22, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(0xb)},
 /* Enable unsolicited event for HP jack */
 	{0x15, AC_VERB_SET_UNSOLICITED_ENABLE, ALC880_HP_EVENT | AC_USRSP_EN},
 /* Enable speaker output */

Now, the only 'broken' thing is jack sensing, it just mutes front, but
not LFE. I guess this is an easy to fix issue.

Emilio

2009/6/22 Emilio López <buhitoescolar at gmail.com>
>
> I can test patches if you'd like
>
> 2009/6/22 Tony Vroon <tony at linx.net>
>>
>> On Mon, 2009-06-22 at 20:14 -0300, Emilio López wrote:
>> > The mic worked with model=acer-aspire-4930g, maybe you can "copy" the
>> > information from that model or something?
>>
>> Will have to see whether copying both internal-mic related verbs from
>> the 4930g model helps, indeed. I found the arecord message rather
>> disconcerting though.
>> Also, while I have remote access to he 6530g its owner is not feeling
>> well and she can't help me run further tests.
>>
>> Sorry, no further patches tonight.
>>
>> Regards,
>> Tony V.
>>
>> P.S. And I blame my e-mail client for swapping my From address around
>> randomly.
>