On Tue, Mar 30, 2010 at 5:09 PM, Rafał Miłecki <zaj...@gmail.com> wrote:
> 2010/3/30 Alex Deucher <alexdeuc...@gmail.com>:
>> On Tue, Mar 30, 2010 at 1:30 PM, Christian König
>> <deathsim...@vodafone.de> wrote:
>>> Hi,
>>>
>>>> > It seems your TV refuses to use audio from analog stereo cable, when
>>>> > it detects audio enabled over/in HDMI (just enabled, even purely
>>>> > silent as in your case). And it seems we enable HDMI mode even when
>>>> > you use radeon.audio=0.
>>>> >
>>>> > I've no idea what could affect this between 2.6.33-rc8 and 2.6.33
>>>> > (stable). The list of changes for drm/radeon taken from
>>>> > http://lkml.org/lkml/2010/2/24/301 :
>>>>
>>>> It doesn't seem to be the kernel, actually. I already tried with
>>>> booting rc8
>>>> and it is the same. Must be one of the other parts, then...
>>> I also have no idea which change caused this, but the fix is rather
>>> simple, just also disable the HDMI encoders when the audio codec gets
>>> disabled by the module option. A patch is attached.
>>>
>>>> Can you provide "lspci" output by the way?
>>> This is the second laptop where I see this strange configuration. From
>>> the video drivers point of view everything is present (audio codec, HDMI
>>> encoders, etc...), but the audio codec doesn't seems to be connected to
>>> the PCI bus, so alsa can't see it.
>>>
>>> I have no idea how we could auto detect this case, but the attached
>>> patch should be a good workaround.
>>
>> We should probably also only enable the audio timer when we enable
>> audio otherwise it just keeps the CPU awake.
>
> Could you explain "when we enable audio", please?

No need to have the timer running if we aren't currently using hdmi
audio (e.g., dpms off, analog encoder in use, digital encoder in
non-hdmi mode, etc.).  So probably turn it on/off when we dpms on/off
a digital output in hdmi mode.

Alex

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