[alsa-devel] REGRESSION: Webcam mic for 145f:015b not longer working with 1.0.24 and above (OK with 1.0.23)

[Kostas]

On 28/08/2012 12:06 μμ, Daniel Mack wrote:
> On 28.08.2012 10:56, Kostas wrote:
>> On 28/08/2012 11:50 πμ, Daniel Mack wrote:
>>> On 28.08.2012 10:47, Kostas wrote:
>>>> On 28/08/2012 08:44 πμ, Daniel Mack wrote:
>>>>> On 28.08.2012 00:19, Kostas wrote:
>>>>>> On 27/08/2012 06:54 μμ, Kostas wrote:
>>>>>>> On 27/08/2012 02:44 μμ, Daniel Mack wrote:
>>>>>>>> On 27.08.2012 12:33, Kostas wrote:
>>>>>>>>> On 27/08/2012 12:26 μμ, Daniel Mack wrote:
>>>>>>>>>> On 27.08.2012 11:00, Kostas wrote:
>>>>>>>>>>> Hi All,
>>>>>>>>>>>
>>>>>>>>>>> I have a 'Trust Webcam' (USB ID: 145f:015b) that comes with a
>>>>>>>>>>> microphone.
>>>>>>>>>>> The microphone works with Alsa 1.0.23 but it does not work with the
>>>>>>>>>>> latest Alsa 1.0.25 neither with Alsa 1.0.24.
>>>>>>>>>>> Apparently this is a regression.
>>>>>>>>>>>
>>>>>>>>>>> What shall I do to figure out the source of the problem?
>>>>>>>>>>>
>>>>>>>>>>> Here are attached my alsa-infos, with Alsa 1.0.23 (working),
>>>>>>>>>>> 1.0.24 (NOT
>>>>>>>>>>> working) and 1.0.25 (NOT working).
>>>>>>>>>> Can you provide dmesg protocols for both a working and a non-working
>>>>>>>>>> case please?
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>> Below are attached the dmesg files.
>>>>>>>>>
>>>>>>>> Thanks - the logs look both good, I guess the interesting messages are
>>>>>>>> only generated once you try to start the stream. Can you try this?
>>>>>>> How i do that?
>>>>>>> I tried to make a test call in skype and also recording a video in
>>>>>>> cheese but no changes in dmesg.
>>>>>>> Is there another way to start the stream?
>>>>>> Also tried to record voice with sound recorder...with alsa 1.0.23
>>>>>> recording is fine..i hear my voice when playback the file but with alsa
>>>>>> 1.0.24 and above nothing is recorded.
>>>>>> In both cases nothing is changed in dmesg output.
>>>>>> What else could i do to help you out?
>>>>>>
>>>>> Comparing the two dmesg logs, I'm under the impression that in the
>>>>> second case (the newer kernel), the hda driver kicks in and creates a
>>>>> sound device before the usb audio driver does. Hence, the default card
>>>>> changes and you're recording from your internal sound card rather than
>>>>> the Webcam.
>>>>>
>>>>> Could you please send the output of 'aplay -l' in both cases?
>>>>>
>>>>>
>>>>> Daniel
>>>>>
>>>> Output of working case
>>>> **** List of PLAYBACK Hardware Devices ****
>>>> card 0: SB [HDA ATI SB], device 0: AD198x Analog [AD198x Analog]
>>>> Â  Subdevices: 1/1
>>>> Â  Subdevice #0: subdevice #0
>>>> card 0: SB [HDA ATI SB], device 1: AD198x Digital [AD198x Digital]
>>>> Â  Subdevices: 1/1
>>>> Â  Subdevice #0: subdevice #0
>>>> card 2: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0]
>>>> Â  Subdevices: 1/1
>>>> Â  Subdevice #0: subdevice #0
>>> Sorry, there's of course no playback on a webcam. Try 'arecord -l'
>>> instead, please.
>>>
>>>
>>> Daniel
>>>
>> Output of non-working case
>> **** List of CAPTURE Hardware Devices ****
>> card 0: SB [HDA ATI SB], device 0: AD198x Analog [AD198x Analog]
>>     Subdevices: 3/3
>>     Subdevice #0: subdevice #0
>>     Subdevice #1: subdevice #1
>>     Subdevice #2: subdevice #2
>> card 1: Webcam [Trust 2MP Auto Focus Webcam], device 0: USB Audio [USB
>> Audio]
>>     Subdevices: 1/1
>>     Subdevice #0: subdevice #0
>>
>>
>> Output of working case
>> **** List of CAPTURE Hardware Devices ****
>> card 0: SB [HDA ATI SB], device 0: AD198x Analog [AD198x Analog]
>>     Subdevices: 3/3
>>     Subdevice #0: subdevice #0
>>     Subdevice #1: subdevice #1
>>     Subdevice #2: subdevice #2
>> card 1: default [Trust 2MP Auto Focus Webcam ], device 0: USB Audio [USB
>> Audio]
>>     Subdevices: 1/1
>>     Subdevice #0: subdevice #0
>>
> Try 'arecord -f cd -Dplughw:1 foo.wav' and see if that works. For
> whatever reason, the webcam is not the default in the non-working case.
> Are you using the same userspace and configs in both cases?
>
>
> Daniel
>
Unfortunately it doesn't work...voice is recorded only in 1.0.23 alsa 
version.
In above version nothing is recorded.
I use the same Ubuntu release just the kernel changes
1.0.23 alsa is in kernel 2.6.38
newer alsa versions that don't work are in newer kernels.