Bug 96648

Summary:	Audio is muted and mapped wrongly by default on Focusrite Scarlett 18i8
Product:	PulseAudio	Reporter:	CapsAdmin <eliashogstvedt>
Component:	alsa	Assignee:	pulseaudio-bugs
Status:	RESOLVED MOVED	QA Contact:	pulseaudio-bugs
Severity:	minor
Priority:	medium	CC:	lennart
Version:	unspecified
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description CapsAdmin 2016-06-23 06:17:58 UTC

The first time I plugged this device in while being relatively new to linux I spent a lot of time figuring out why the audio wasn't working as opening a terminal and typing alsamixer, selecting the soundcard and pressing M on the output to unmute it wasn't something I had thought of. The left and right channel are also PCM 1/PCM 1 by default but they should be PCM 1/PCM 2. So after unmuting and setting the right channels there's audio at least.

But after that there's the issue that it's being treated as a 5.1 system so the bass is on some other channel. There's an existing issue for that though https://bugs.freedesktop.org/show_bug.cgi?id=93163

I don't know how you handle specific devices. If they don't conform do you do special case handling? Or should that happen somewhere else?

Comment 1 Tanu Kaskinen 2016-06-23 09:42:39 UTC

If the mixer settings have bad defaults, that's probably something that is better fixed in alsa. http://alsa-project.org/main/index.php/Bug_Tracking

We can add special handling for specific devices in pulseaudio, if someone writes configuration for them that is generally better than what our generic configuration does.

Comment 2 Raymond 2016-06-24 08:34:57 UTC

https://us.focusrite.com/usb-audio-interfaces/scarlett-18i8

18-in, 8-out USB interface is ideal for multi-instrumentalists, producers and small bands who want to record audio from a wide range of sources such as drums, guitars, keyboards and vocals

Comment 3 Raymond 2016-06-24 12:50:17 UTC

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/sound/usb/mixer_scarlett.c



you have to post output of alsa-info.sh


d

Comment 4 GitLab Migration User 2018-07-30 10:28:09 UTC

-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

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