From: Takashi Iwai <tiwai@suse.de>
To: Con Kolivas <kernel@kolivas.org>
Cc: linux-kernel <linux-kernel@vger.kernel.org>, alsa-devel@alsa-project.org
Subject: Re: ALSA:usb audio Higher sample rates on usb audio no longer working.
Date: Thu, 03 Jan 2019 14:23:53 +0100 [thread overview]
Message-ID: <s5hsgy96fiu.wl-tiwai@suse.de> (raw)
In-Reply-To: <CABqErrECNH+gRiZXM+z=igjAw895e7KLeV6H0EKvMkW0UsVvJw@mail.gmail.com>
On Thu, 03 Jan 2019 12:43:54 +0100,
Con Kolivas wrote:
>
> Upon switching from 4.19.0 to 4.20.0, pulseaudio started complaining
> that sinks that previously worked are no longer supported.
>
> On 4.19.0 trying 24 bit 88200, 176400, and 192000 I get the following
> output from pulse.
> resampler.c: Forcing resampler 'copy', because of fixed, identical
> sample rates.sink-input.c: Created input 15 "Playback Stream" on
> alsa_output.usb-DSPeaker_Anti-Mode_X4-00.iec958-stereo with sample
> spec float32le 2ch 176400Hz and channel map front-left,front-right
>
> Switching to 4.20 gives me:
> alsa-sink.c: Sink does not support sample rate of 176400 Hz
> and
> alsa-sink.c: Sink does not support sample rate of 88200 Hz
> and
> alsa-sink.c: Sink does not support sample rate of 192000 Hz
>
> Sample rates of 44100, 48000, and 96000 work fine, but 88200, 176400,
> and 192000 no longer work
>
> Switching back to 4.19 immediately fixes the issue.
>
>
> I tried looking through the alsa changelogs but there were too many to
> give an obvious culprit, and haven't had time to do a git bisect. If
> there's an obvious choice patch to back out I'd be grateful for the
> heads up.
Hm, through a quick glance, there hasn't been any relevant changes in
USB-audio part (sound/usb/*). Also, the changes in sound/core/* are
irrelevant with your problem.
So I have no idea what went wrong. The bisection, or at least,
narrowing down the commits would be helpful.
thanks,
Takashi
next prev parent reply other threads:[~2019-01-03 13:23 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-03 11:43 ALSA:usb audio Higher sample rates on usb audio no longer working Con Kolivas
2019-01-03 13:23 ` Takashi Iwai [this message]
2019-01-03 23:16 ` Con Kolivas
2019-01-04 6:27 ` Takashi Iwai
2019-01-04 15:23 ` [alsa-devel] " Pierre-Louis Bossart
2019-01-04 16:52 ` Gopal, Saranya
2019-01-04 17:13 ` Pierre-Louis Bossart
2019-01-04 20:34 ` Con Kolivas
2019-01-05 14:14 ` Gopal, Saranya
2019-01-05 14:02 ` [PATCH] usbcore: Select only first configuration for non-UAC3 compliant devices saranya.gopal
2019-01-05 14:35 ` Greg KH
2019-01-05 17:39 ` [PATCH V2] " saranya.gopal
2019-01-05 22:02 ` Con Kolivas
2019-01-06 2:44 ` [PATCH V3] " saranya.gopal
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