[alsa-devel] No headphone output on HT Omega Claro Halo
Christopher J. Atherton
the8lack8ox at gmail.com
Sat Mar 7 02:43:57 CET 2009
Christopher J. Atherton wrote:
> Clemens Ladisch wrote:
>> Christopher J. Atherton wrote:
>>> I have an HT Omega Claro Halo (CMI8878) card that is not entirely
>>> working. This card has two analog outputs, a pair of RCA connectors and
>>> also a separate headphone output (3.5mm jack). The RCA outputs work,
>>> but the headphone output, which notably passes a signal from a built in
>>> headphone amp, does not.
>> Please try this patch:
>>
>> --- linux/sound/pci/oxygen/oxygen.c
>> +++ linux/sound/pci/oxygen/oxygen.c
>> @@ -200,6 +200,8 @@ static void halo_init(struct oxygen *chip)
>> {
>> ak4396_init(chip);
>> ak5385_init(chip);
>> + oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL, 0x100);
>> + oxygen_set_bits16(chip, OXYGEN_GPIO_DATA, 0x100);
>> }
>>
>> static void generic_cleanup(struct oxygen *chip)
>
> That did the trick. Many thanks! However, I've now noticed that the
> PCM volume control doesn't work at all, which is somewhat inconvenient
> since the card is very loud and Master only makes my 64 ohm headphones
> comfortable at "5" (-25 dB).
>
> -- Kristoff
OK, nevermind. I've been fiddling around a bit, and finally got the PCM
control working. Not sure about what happened, but after reconfiguring
and reinstalling the drivers several times, the PCM control works
normally. Thanks again.
-- Kristoff
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