[yocto] [meta-raspberrypi][PATCH] make sound work out of the box for raspberrypi2

[Andreas Müller]

On Tue, Mar 24, 2015 at 12:14 AM, Gary Thomas <gary at mlbassoc.com> wrote:
> On 2015-03-23 16:22, Andreas Müller wrote:
>>
>> On Mon, Mar 23, 2015 at 10:43 PM, Gary Thomas <gary at mlbassoc.com> wrote:
>>>
>>> On 2015-03-23 14:57, Andreas Müller wrote:
>>>>
>>>>
>>>> On Mon, Mar 23, 2015 at 4:59 PM, Gary Thomas <gary at mlbassoc.com> wrote:
>>>>>
>>>>>
>>>>> On 2015-03-22 14:21, Andreas Müller wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>> Signed-off-by: Andreas Müller <schnitzeltony at googlemail.com>
>>>>>> ---
>>>>>>     ...-during-boot-by-compiling-SND_BCM2835-int.patch | 38
>>>>>> ++++++++++++++++++++++
>>>>>>     recipes-kernel/linux/linux-raspberrypi_3.18.bb     |  8 +++--
>>>>>>     2 files changed, 43 insertions(+), 3 deletions(-)
>>>>>>     create mode 100644
>>>>>>
>>>>>>
>>>>>> recipes-kernel/linux/linux-raspberrypi/0001-start-sound-during-boot-by-compiling-SND_BCM2835-int.patch
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> I tried this patch (which downloaded very strangely using Thunderbird)
>>>>> and
>>>>> the
>>>>> kernel rebuilt fine.  I now have the audio detected, but still no sound
>>>>> :-(
>>>>> Again I've tried the internal (phono) speakers as well as HDMI audio.
>>>>>
>>>>> Just to prove a point on the [brand new] hardware, I installed OpenELEC
>>>>> (XBMC)
>>>>> and it works fine using the HDMI audio.  Sadly when I tried Raspbian
>>>>> and
>>>>> Ubuntu
>>>>> there was no sound either...
>>>>>
>>>>> Were you (Andreas) able to get any sound with this patch?
>>>>>
>>>> Yes but I have used 3.5mm sound output - Should have mentioned that in
>>>> commit. I guess there is to enable something else in kernel config for
>>>> HDMI. Will look into that
>>>
>>>
>>>
>>> I've tried the 3.5mm jack as well but nothing seems to come out.
>>> I even tried booting with the HDMI missing (powered off) in case
>>> that was causing some confusion.
>>>
>>> Did you make any changes to config.txt to get this going?
>>
>> No
>>>
>>>
>> Have my standard xfce-image with xfce4-mixer and as mentioned out of
>> the box: I can hear sound / change volume...
>
>
> Would it be possible to share your [bootable] image?
>
>>
>> What does happen if you start alsamixer - if it is installed on your
>> image?
>
>
> alsamixer looks correct.
>
> BTW, I've tried this on my RaspberryPi Model B and I don't get any sound
> from it either :-(  Again, booting with test_mode=1 shows that the hardware
> is working, just not in Linux. I'm sure I've tried this in the past with
> success so I'm becoming more and more confused...
>
For sharing I need to create a smaller image - the current one
contains all stuff from meta-games, all browsers and more. Hope to get
that done tomorrow evening. What is the preferred way of sharing huge
files?

Andreas