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From: Takashi Iwai <tiwai@suse.de>
To: chihhao chen <chihhao.chen@mediatek.com>
Cc: alsa-devel@alsa-project.org
Subject: Re: missing sound on kernel-5.15
Date: Tue, 30 Aug 2022 09:02:59 +0200	[thread overview]
Message-ID: <87bks28b8c.wl-tiwai@suse.de> (raw)
In-Reply-To: <0f36385ad917ac5ec1fdf4fedd8acd6bb3494bdf.camel@mediatek.com>

On Tue, 30 Aug 2022 08:13:44 +0200,
chihhao chen wrote:
> 
> Hi Takashi,
> 
> I tried the patch but this problem still happens.
> 
> I add some logs in snd_usb_init_sample_rate() in kernel-5.10
> [  146.260105][T1702328] writer: usb 1-1: [name:snd_usb_audio&]2:2 Set
> sample rate 96000, clock 0 protocol 0
> [  146.289892][T1002328] writer: usb 1-1: [name:snd_usb_audio&]2:2 Set
> sample rate 48000, clock 0 protocol 0
> 
> Because TinyAlsa tends to set highest rate for initialization and real
> rate for playback, it will still trigger two-times
> SAMPLING_FREQ_CONTROL USB requests.

Then this is a firmware problem of your device.
The same problem would happen even with the old kernel if you run the
application with different sample rates.  Does the device work with
96kHz at all?

Could you give the lsusb -v output of the device, too?

> Which kernel version should I try? kernel-5.19 or?

Yes, 5.19 should suffice.


Takashi

  reply	other threads:[~2022-08-30  7:04 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-22  8:06 missing sound on kernel-5.15 chihhao chen
2022-08-22 11:57 ` Geraldo Nascimento
2022-08-29  7:56   ` chihhao chen
2022-08-29  8:06     ` Takashi Iwai
2022-08-29  8:50       ` chihhao chen
2022-08-29 12:16         ` Takashi Iwai
2022-08-29 18:15           ` Takashi Iwai
2022-08-30  5:54             ` Takashi Iwai
2022-08-30  6:02               ` Takashi Iwai
2022-08-30  6:13               ` chihhao chen
2022-08-30  7:02                 ` Takashi Iwai [this message]
2022-08-30  8:08                   ` chihhao chen
2022-08-30  8:24                     ` Takashi Iwai
2022-08-31  3:39                       ` chihhao chen
2022-08-31  5:18                         ` Takashi Iwai
2022-08-31  7:03                           ` chihhao chen
2022-08-31  8:04                             ` Takashi Iwai
2022-08-31  9:26                               ` chihhao chen
2022-08-31 10:48                                 ` Takashi Iwai
2022-08-31 13:16                                   ` chihhao chen
2022-08-31 13:40                                     ` Takashi Iwai
2022-09-01  5:50                                       ` chihhao chen
2022-09-01  7:51                                         ` Takashi Iwai
2022-09-01  8:28                                           ` Takashi Iwai
2022-09-01 10:06                                             ` chihhao chen
2022-09-01 10:25                                               ` Takashi Iwai
2022-11-11  7:58                                                 ` Chihhao Chen (陳志豪)
     [not found] <1661150747490509987-webhooks-bot@alsa-project.org>
2022-08-22  6:45 ` GitHub issues - opened

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