From: Takashi Iwai <tiwai@suse.de>
To: Adam Goode <adam@spicenitz.org>
Cc: alsa-devel@alsa-project.org
Subject: Re: Scarlett 18i8 hardware out of sync with AlsaMixer
Date: Wed, 27 May 2015 08:43:21 +0200 [thread overview]
Message-ID: <s5h8ucaed12.wl-tiwai@suse.de> (raw)
In-Reply-To: <CADN=WdobTC9qdHjKD3PyPW99f2pX-j82vVzZ32zp4ed-C0Gbgg@mail.gmail.com>
At Tue, 26 May 2015 21:39:22 -0400,
Adam Goode wrote:
>
> Linux 4.0.2-300.fc22.x86_64
>
> Hi,
>
> I have the Scarlett 18i8 USB device that is supported by the new
> scarlett_mixer.c code. I am happy to say that the mixer code works in
> most cases. But under some conditions, I cannot get any sound out of
> the device until I go and toggle the "Matrix 01 Input" and "Matrix 02
> Input" enums up and then down (from PCM 1 and PCM 2). This appears to
> me to be some kind of cache invalidation bug, where the device is out
> of sync with kernel mixer state.
>
> I will take a look at the code myself at some point, but not for a
> while. But I am happy to try patches if anyone comes up with anything
> in the mean time.
Does it happen after some S3/S4 or even during a normal operation
without power-saving? The USB-audio device supports autopm, so this
needs to be checked, too.
Takashi
next prev parent reply other threads:[~2015-05-27 6:43 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-27 1:39 Scarlett 18i8 hardware out of sync with AlsaMixer Adam Goode
2015-05-27 6:43 ` Takashi Iwai [this message]
2015-05-27 12:55 ` Adam Goode
2015-05-27 13:24 ` Takashi Iwai
2015-05-27 13:37 ` Adam Goode
2015-05-27 13:53 ` Chris J Arges
2015-06-09 21:44 ` Adam Goode
2015-06-10 4:24 ` Adam Goode
2015-06-13 23:03 ` Robin Gareus
2015-06-19 11:34 ` Takashi Iwai
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