From: Takashi Iwai <tiwai@suse.de>
To: Hans de Goede <hdegoede@redhat.com>
Cc: "alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>
Subject: Re: Logitech Z10 USB speakers need a volume change before audio works
Date: Thu, 25 Nov 2021 13:42:00 +0100 [thread overview]
Message-ID: <s5ho8689zl3.wl-tiwai@suse.de> (raw)
In-Reply-To: <cf7dd2f0-512c-1b8c-efb1-53f79ddfb41e@redhat.com>
On Thu, 25 Nov 2021 12:04:41 +0100,
Hans de Goede wrote:
>
> Hi,
>
> I've a set of Logitech Z10 USB speakers, which act as a USB soundcard.
>
> They have this weird glitch where after turning off my PC (and their
> power-supply as well) and then turning things back on, they are silent
> until I change the PCM volume control for the speakers inside
> alsa-mixer.
>
> It seems like they need some "set-volume" command to be send over the
> USB bus to unmute them when initially powered-up / turned on.
>
> Is their some existing usb-audio quirk which I can try to work around this?
No such quirk is present for now.
Was it tested with 5.16-rc? There was a change in USB-audio driver
initialization (commit b96681bd5827) and it might have some effect in
your case.
Also, it's interesting to know whether it happens also once after
suspend-resume, too.
thanks,
Takashi
next prev parent reply other threads:[~2021-11-25 12:43 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-25 11:04 Logitech Z10 USB speakers need a volume change before audio works Hans de Goede
2021-11-25 12:42 ` Takashi Iwai [this message]
2021-11-30 11:07 ` Hans de Goede
2021-11-30 14:33 ` Hans de Goede
2021-11-30 15:56 ` Takashi Iwai
2021-12-01 15:44 ` Hans de Goede
2021-12-02 8:25 ` Takashi Iwai
2021-12-06 13:54 ` Hans de Goede
2021-12-07 8:07 ` Takashi Iwai
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=s5ho8689zl3.wl-tiwai@suse.de \
--to=tiwai@suse.de \
--cc=alsa-devel@alsa-project.org \
--cc=hdegoede@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox