are there any error message related to sampling rate since there is no
info about supported rate in the descriptor ?
speaker-test -c2 -t wav -D plughw:1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 4
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 32
iInterface 6
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 4
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 32
iInterface 6
AudioStreaming Interface Descriptor:
bLength 16
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 12
bmControls 0x00
bFormatType 1
bmFormats 0x00000001
PCM
bNrChannels 2
bmChannelConfig 0x00000003
Front Left (FL)
Front Right (FR)
iChannelNames 0
AudioStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bSubslotSize 2
bBitResolution 16
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to alsa-driver in Ubuntu.
https://bugs.launchpad.net/bugs/1295173
Title:
[USB-Audio - Kensington USB3.0 Video Dock, playback] volume problem
Status in “alsa-driver” package in Ubuntu:
Incomplete
Bug description:
1) Ubuntu version:
Using 14.04. Issues were introduced after upgrade from 13.10
$ uname -a
Linux jonas-xps 3.13.0-18-generic #38-Ubuntu SMP Mon Mar 17 21:40:06 UTC 2014
x86_64 x86_64 x86_64 GNU/Linux
2) Alsa version:
alsa-base:
Installed: 1.0.25+dfsg-0ubuntu4
3) What I expected to happen
When disconnecting my Kensington USB dock[1], which has an external sound
card, I expected volumes to either:
- Remain the same as they were before the disconnect [3][4]
- Volumes to be adjusted to 50% or some other saner value than 100%
4) What happened instead
When disconnecting the USB dock, all volumes are set to 100%[5],
including application volumes[2].
Additionally, the external sound card is not selected in gnome-
control-center[5] (see #1250759) and the card volume slider has no
effect.
[1]
http://www.kensington.com/kensington/en/gb/p/1504/K33970EU/usb-3-0-docking-station-with-dvi-hdmi-vga-video-.aspx#.UysBmqaVuSQ
[2] https://launchpadlibrarian.net/170133327/app-sliders-after.png
[3] https://launchpadlibrarian.net/170133403/app-sliders-before.png
[4] https://launchpadlibrarian.net/170133403/app-sliders-before.png
[5] https://launchpadlibrarian.net/170133411/cards-after.png
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: alsa-base 1.0.25+dfsg-0ubuntu4
ProcVersionSignature: Ubuntu 3.13.0-18.38-generic 3.13.6
Uname: Linux 3.13.0-18-generic x86_64
ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: jonas 2322 F.... pulseaudio
/dev/snd/pcmC1D0p: jonas 2322 F...m pulseaudio
/dev/snd/controlC0: jonas 2322 F.... pulseaudio
CurrentDesktop: Unity
Date: Thu Mar 20 15:50:57 2014
DistributionChannelDescriptor:
# This is a distribution channel descriptor
# For more information see
http://wiki.ubuntu.com/DistributionChannelDescriptor
canonical-oem-somerville-precise-amd64-20120703-2
EcryptfsInUse: Yes
InstallationDate: Installed on 2013-08-27 (205 days ago)
InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary
20120703-15:08
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_Card: Kensington USB3.0 Video Dock - Kensington USB3.0 Video Dock
Symptom_Type: Volume slider, or mixer problems
Title: [USB-Audio - Kensington USB3.0 Video Dock, playback] volume slider
problem
UpgradeStatus: Upgraded to trusty on 2014-03-20 (0 days ago)
dmi.bios.date: 05/15/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A09
dmi.board.name: 0PJHXN
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: 0.1
dmi.modalias:
dmi:bvnDellInc.:bvrA09:bd05/15/2013:svnDellInc.:pnDellSystemXPSL322X:pvr:rvnDellInc.:rn0PJHXN:rvrA00:cvnDellInc.:ct8:cvr0.1:
dmi.product.name: Dell System XPS L322X
dmi.sys.vendor: Dell Inc.
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