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Message #60571
[Bug 1305133] Re: usb headset causes "delay: estimated / actual" spam in dmesg
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
trusty' to 'verification-done-trusty'.
If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.
See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!
** Tags added: verification-needed-trusty
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https://bugs.launchpad.net/bugs/1305133
Title:
usb headset causes "delay: estimated / actual" spam in dmesg
Status in “linux” package in Ubuntu:
Confirmed
Bug description:
I sometimes have a USB headset plugged in to my computer. When the
headset is plugged in, I get hundreds (thousands?) of messages like
the following in dmesg and syslog:
[63467.527274] delay: estimated 384, actual 240
[63490.543473] delay: estimated 0, actual 240
[63490.543490] delay: estimated 528, actual 240
[63490.543853] delay: estimated 480, actual 240
[63493.545912] delay: estimated 96, actual 240
[63493.548295] delay: estimated 384, actual 240
[63494.546711] delay: estimated 0, actual 240
[63494.546728] delay: estimated 528, actual 240
[63500.551524] delay: estimated 0, actual 240
[63500.551544] delay: estimated 528, actual 240
[63500.551560] delay: estimated 528, actual 240
To reproduce:
1) Plug in a USB headset
Expected results:
No "delay: estimated" spam in the kernel log (dmesg/syslog/kern.log)
Actual results:
Hundreds of similar messages about estimated + actual delays in the kernel log.
Unplugging the USB headset makes the problem stop.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-23-generic 3.13.0-23.45
ProcVersionSignature: Ubuntu 3.13.0-23.45-generic 3.13.8
Uname: Linux 3.13.0-23-generic x86_64
ApportVersion: 2.14.1-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC2: steve 2277 F.... pulseaudio
/dev/snd/controlC1: steve 2277 F.... pulseaudio
/dev/snd/controlC0: steve 2277 F.... pulseaudio
CurrentDesktop: Unity
Date: Wed Apr 9 11:11:23 2014
DistributionChannelDescriptor:
# This is a distribution channel descriptor
# For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
canonical-oem-somerville-precise-amd64-20130203-1
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=79084358-087f-4cee-a0be-e2f78361873f
InstallationDate: Installed on 2013-12-02 (127 days ago)
InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary 20130203-13:50
MachineType: Dell Inc. XPS13 9333
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-23-generic root=UUID=0b9db31c-747b-40ad-bbbd-13a9a29caece ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.13.0-23-generic N/A
linux-backports-modules-3.13.0-23-generic N/A
linux-firmware 1.127
SourcePackage: linux
UpgradeStatus: Upgraded to trusty on 2014-02-12 (55 days ago)
dmi.bios.date: 11/11/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A01
dmi.board.name: 0GFTRT
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.:bvrA01:bd11/11/2013:svnDellInc.:pnXPS139333:pvr:rvnDellInc.:rn0GFTRT:rvrA00:cvnDellInc.:ct8:cvr0.1:
dmi.product.name: XPS13 9333
dmi.sys.vendor: Dell Inc.
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References