[P8B WS, Realtek ALC892, Black Line Out, Rear] fails after a while (distortions after seek of streaming media)
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
alsa-driver (Ubuntu) |
Expired
|
Undecided
|
Unassigned |
Bug Description
Some "unusual" sound usage patterns like seeking streaming media get the driver into a distorted state, where high-frequency chirps are added to all sound played.
Seen on natty & precise (not tested on others), on natty modprobe-cycled the driver to workaround the issue, on precise "pasuspender alsactl init" seems to be enough to get the driver play sanely again.
Easiest way so far to reproduce this seems to be running speech-dispatcher (started by launching mumble & quitting it) and firefox with html5 youtube at same time, playing some video with speech-only content where distortions are easiest to notice and seeking that forward and backward 10-20 times. Might be related to concurrently running applications with different sampling rates and making them interrupt playback at "inconvenient" times from the driver's point of view.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: alsa-base 1.0.25+
ProcVersionSign
Uname: Linux 3.2.0-21-generic x86_64
NonfreeKernelMo
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0-0ubuntu2
Architecture: amd64
Date: Fri Apr 6 15:31:11 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120112)
PackageArchitec
ProcEnviron:
LANGUAGE=en_IE:en
TERM=xterm
LANG=en_IE.UTF-8
SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_Jack: Black Line Out, Rear
Symptom_Type: Sound works for a while, then breaks
Title: [System Product Name, Realtek ALC892, Black Line Out, Rear] fails after a while
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/25/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0704
dmi.board.
dmi.board.name: P8B WS
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.
dmi.modalias: dmi:bvnAmerican
dmi.product.name: System Product Name
dmi.product.
dmi.sys.vendor: System manufacturer
Status changed to 'Confirmed' because the bug affects multiple users.