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[Launchpad Bug Tracker <994987@xxxxxxxxxxxxxxxxxx>]

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After upgrading Ubuntu from 10.04 to 12.04, I have been using Pandora
(pandora.com) for listening to streaming music. Sometimes, the music is
skipping, repeating, or lagging.

The problem occurs most while either running another program besides the
web browser or when the browser is downloading web pages. The problem is
NOT worsened by interacting with the launcher or Dash, except that the
mouse movements also skip or lag at the same time as the audio. A few
times during these periods of incident, as the symptoms were at a max,
Pandora stopped trying to play the current song and switched to the next
song. Web page scrolling is also affected during the skipping.

I have been watching the system monitor graphs and both CPU and memory
are well below 100%. I have experienced this both in Firefox and Chrome.

I asked for help in the #ubuntu IRC channel and was told to report this here as a possible bug. I have also looked at the question at the link below, but the answer does not seem like a full solution since it requires the user to manually choose a CPU level, requiring knowledge of which setting is right, such that the user could choose a setting that overclocks the processor.
http://askubuntu.com/questions/128848/high-cpu-usage-while-playing-flash-on-ubuntu-12-04-amd64

Pandora and audio playback were working perfectly right before the
upgrade to Ubuntu 12.04. I update my system daily. Rebooting did not
help.

Full list of steps:
1. Install Ubuntu 12.04 and nvidia driver.
2. Use Unity 2d.
3. In Firefox or Chrome, log into pandora.com and play music.
4. While music is playing, open several other pages in other tabs. Also, open software center and search for various packages. Listen for music to skip, repeat, or lag, and for mouse to skip and lag.

Thank you for the assistance.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: firefox 12.0+build1-0ubuntu0.12.04.1
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic-pae 3.2.14
Uname: Linux 3.2.0-24-generic-pae i686
NonfreeKernelModules: nvidia
AddonCompatCheckDisabled: False
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu7
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  jon        1655 F.... pulseaudio
 /dev/snd/pcmC0D0p:   jon        1655 F...m pulseaudio
BuildID: 20120423122624
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xdfffc000 irq 46'
   Mixer name	: 'SigmaTel STAC9200'
   Components	: 'HDA:83847690,102801cc,00102201'
   Controls      : 14
   Simple ctrls  : 7
Channel: release
Date: Sat May  5 00:41:47 2012
ExecutablePath: /usr/lib/firefox/plugin-container
ForcedLayersAccel: False
IfupdownConfig:
 auto lo
 iface lo inet loopback
IpRoute:
 default via 192.168.0.1 dev wlan0  proto static 
 169.254.0.0/16 dev wlan0  scope link  metric 1000 
 192.168.0.0/24 dev wlan0  proto kernel  scope link  src 192.168.0.5  metric 2
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Profiles: Profile0 (Default) - LastVersion=12.0/20120423122624 (Running)
RunningIncompatibleAddons: False
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/23/2006
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A01
dmi.board.name: 0JF242
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA01:bd03/23/2006:svnDellInc.:pnLatitudeD820:pvr:rvnDellInc.:rn0JF242:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Latitude D820
dmi.sys.vendor: Dell Inc.

** Affects: adobe-flashplugin (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 precise release-channel
-- 
Flash plugin skips and lags intermittently while using other programs and browser tabs
https://bugs.launchpad.net/bugs/994987
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