usb headset causes "delay: estimated / actual" spam in dmesg
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Medium
|
Unassigned |
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/
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-
ProcVersionSign
Uname: Linux 3.13.0-23-generic x86_64
ApportVersion: 2.14.1-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/
/dev/snd/
CurrentDesktop: Unity
Date: Wed Apr 9 11:11:23 2014
DistributionCha
# This is a distribution channel descriptor
# For more information see http://
canonical-
EcryptfsInUse: Yes
HibernationDevice: RESUME=
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=
RelatedPackageV
linux-
linux-
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.
dmi.modalias: dmi:bvnDellInc.
dmi.product.name: XPS13 9333
dmi.sys.vendor: Dell Inc.
tags: | added: bios-outdated-a04 |
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