Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: alsa-driver (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/535453
Title:
USB-Audio CM106 USB Sound card causes weird errors in the logs
Status in alsa-driver package in Ubuntu:
Confirmed
Bug description:
Binary package hint: pulseaudio
I have a CMI106 usb sound card (the cheap chinese ones like this:
http://cgi.ebay.com/USB-2-0-7-1-Ch-Optical-Audio-Sound-Card-SPDIF-
Adapter_W0QQitemZ320447866154QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item4a9c2e652a#ht_2096wt_954
)
It behaves... strangely. I thought I'd at least report what the syslog
tells me:
Mar 9 20:39:26 kiki kernel: [ 502.376044] usb 3-2: new full speed USB
device using uhci_hcd and address 4
Mar 9 20:39:26 kiki kernel: [ 502.605415] usb 3-2: configuration #1 chosen
from 1 choice
Mar 9 20:39:26 kiki kernel: [ 502.702501] input: USB Sound Device
as /devices/pci0000:00/0000:00:1d.1/usb3/3-2/3-2:1.3/input/input11
Mar 9 20:39:26 kiki kernel: [ 502.702841] generic-usb 0003:0D8C:0102.0003:
input,hidraw1: USB HID v1.00 Device [USB Sound Device ] on
usb-0000:00:1d.1-2/input3
Mar 9 20:39:27 kiki pulseaudio[1143]: alsa-mixer.c: Your kernel driver is
broken: it reports a volume range from 0.00 dB to 0.00 dB which makes no sense.
Mar 9 20:39:27 kiki pulseaudio[1143]: last message repeated 2 times
Mar 9 20:39:27 kiki rtkit-daemon[1145]: Sucessfully made thread 1572 of
process 1143 (n/a) owned by '1000' RT at priority 5.
Mar 9 20:39:27 kiki rtkit-daemon[1145]: Supervising 3 threads of 1 processes
of 1 users.
Mar 9 20:39:27 kiki pulseaudio[1143]: ratelimit.c: 25 events suppressed
Mar 9 20:39:27 kiki rtkit-daemon[1145]: Sucessfully made thread 1573 of
process 1143 (n/a) owned by '1000' RT at priority 5.
Mar 9 20:39:27 kiki rtkit-daemon[1145]: Supervising 4 threads of 1 processes
of 1 users.
This is on ubuntu lucid lynx. The "pulseaudio complains that the
volume range is impossible" part was also present in ubuntu 9.10,
except that it said "from -16 dB to -16 dB".
Some symptoms I'm seeing:
- unreliable volume vumeters in pavucontrol
- plugging a headset mic into the sound card's mic input works, but plugging
normal boom mics doesn't work at all. I tried two different mics: a cheap
dynamic mic with an on/off switch, and an electret condenser mic with a battery
in it. Both boom mics work if I plug them in the onboard soundcard of the
computer instead of the USB sound card. I don't know what to do.
Also, I left this bug be filed on pulseaudio, but according to
pulseaudio it's an alsa bug. I don't know the correct alsa package
name to file this upon.
ProblemType: Bug
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: jeff 1143 F.... pulseaudio
/dev/snd/controlC0: jeff 1143 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'ICH6'/'Intel ICH6 with AD1981B at irq 22'
Mixer name : 'Analog Devices AD1981B'
Components : 'AC97a:41445374'
Controls : 26
Simple ctrls : 18
Card1.Amixer.info:
Card hw:1 'default'/'USB Sound Device at usb-0000:00:1d.1-2, full
speed'
Mixer name : 'USB Mixer'
Components : 'USB0d8c:0102'
Controls : 14
Simple ctrls : 6
Date: Tue Mar 9 20:32:13 2010
DistroRelease: Ubuntu 10.04
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha i386 (20100113)
Package: pulseaudio 1:0.9.22~0.9.21+stable-queue-32-g8478-0ubuntu11
ProcEnviron:
LANG=en_CA.utf8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-16.25-generic
SelectedCard: 1 default USB-Audio - USB Sound Device
SourcePackage: pulseaudio
Symptom: audio
Title: [USB-Audio - USB Sound Device ] pactl stat failed to find
default card
Uname: Linux 2.6.32-16-generic i686
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