[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 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