No headphone output on HT Omega Claro Halo

No headphone output on HT Omega Claro Halo

[Christopher J. Atherton]

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.  Interestingly, when I turn up the master
volume really high, I can hear pops/cracks on the headphone output.
Thanks for any assistance.

-- Kristoff

Re: No headphone output on HT Omega Claro Halo

[Clemens Ladisch]

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)

Re: No headphone output on HT Omega Claro Halo

[Christopher J. Atherton]

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

Re: No headphone output on HT Omega Claro Halo

[Christopher J. Atherton]

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