Flash uses 100% CPU after resuming from suspend
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
adobe-flashplugin (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
firefox (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
flashplugin-nonfree (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
Bug Description
Binary package hint: firefox
firefox-3.0 = 3.0.3+build1+
Sometimes when resuming from suspend-to-RAM, Firefox becomes unresponsive and uses 100% CPU time. An strace shows it in a cycle like this:
--- SIGIO (I/O possible) @ 0 (0) ---
rt_sigreturn(
futex(0xb2503d90, 0x80 /* FUTEX_??? */, 2) = ? ERESTARTSYS (To be restarted)
This repeats endlessly and uses all available CPU time. It doesn't always happen, and I haven't noticed a pattern yet, but it's happened 3 or 4 times in the last week.
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/pcmC0D0p: me 3080 F...m pulseaudio
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xfebfc000 irq 47'
Mixer name : 'SigmaTel STAC9228'
Components : 'HDA:83847616,
Controls : 28
Simple ctrls : 19
DistroRelease: Ubuntu 11.04
HibernationDevice: RESUME=
MachineType: Dell Inc. XPS M1330
NonfreeKernelMo
Package: linux (not installed)
ProcEnviron:
LANGUAGE=
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=
ProcVersionSign
RelatedPackageV
linux-
linux-
linux-firmware 1.52
Tags: natty
Uname: Linux 2.6.38-13-generic i686
UpgradeStatus: Upgraded to natty on 2011-05-15 (220 days ago)
UserGroups: adm admin fuse vboxusers
WpaSupplicantLog:
dmi.bios.date: 07/08/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A12
dmi.board.name: 0PU073
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.
dmi.product.name: XPS M1330
dmi.sys.vendor: Dell Inc.
description: | updated |
Changed in firefox-3.0 (Ubuntu): | |
status: | New → Confirmed |
I can confirm this problem on one of the laptops that I used. IT is a Sony VAIO PCG-FXA53 with AMD Athlon XP 1400+ CPU, 512MB RAM. The other laptop (Dell Lattitude D600) never experienced this kind of problem. I notice that usually either firefox or both firefox/Xorg combination consumes the CPU after suspend to RAM. Often the problem can be cured by closing some web pages. I notice that the following pages are the culprit (again, I still cannot notice a definite pattern):
* mail.yahoo.com (new web mail)
* mail.google.com (standard AJAX interface)
* perhaps weather.com, skymall.com
I will write more then things become clearer to me. If anything can be done on my part (e.g. tests, log dumps) to pinpoint the problem please let me know.