Created attachment 503015 [details]
alsa-info script output

Description of problem:

Annoying audio flickering.Audio flickers whenever I do something.In other words, 
audio doesn't flicker when I don't touch the keyboard or mouse.Any action like changing desktop, opening some application, scrolling, etc. causes annoying audio flickering ( using rhythmbox. Tried with audacious and banshee with no effect ).

- I tried to disable pulseaudio and switch to bare alsa, but since I am using gnome 3 it turned out to be rather difficult.However I run several other distros on this laptop amongst which is slackware with alsa.I have never noticed any strange noise as I am experiencing in Fedora.So it is rather not hardware`s fault. ( Though I dont run the very same kernel on Slackware, so if someone know how to disable pulseaudio and switch to alsa in F15 I can check it out ).

- Problem exists both in Standard and Administrator accounts ( tested )

- I can comfortably play movies without hearing this ugly effect so this is clearly not the matter of not efficient hardware ( details below )

Version-Release number of selected component (if applicable):

pulseaudio 0.9.22

How reproducible:


Steps to Reproduce:
1.Start some audio player and play music
2.Do anything involving cpu usage
3.Experience audio flickering
  
Actual results:
Audio flickers


Expected results:
Audio shouldn't flicker

Additional info:

Linux mikolaj 2.6.38.6-27.fc15.i686 #1 SMP Sun May 15 17:57:13 UTC 2011 i686 i686 i386 GNU/Linux

- Using gnome 3 
- System up to date
- Lenovo thinkpad T60
- 2.5 GB of RAM

`lspci`:

00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03)
00:01.0 PCI bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express PCI Express Root Port (rev 03)
00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 02)
00:1c.1 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 2 (rev 02)
00:1c.2 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 3 (rev 02)
00:1c.3 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 4 (rev 02)
00:1d.0 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 (rev 02)
00:1d.3 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #4 (rev 02)
00:1d.7 USB Controller: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02)
00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 02)
00:1f.2 SATA controller: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA AHCI Controller (rev 02)
00:1f.3 SMBus: Intel Corporation N10/ICH 7 Family SMBus Controller (rev 02)
01:00.0 VGA compatible controller: ATI Technologies Inc M52 [Mobility Radeon X1300]
02:00.0 Ethernet controller: Intel Corporation 82573L Gigabit Ethernet Controller
03:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02)
15:00.0 CardBus bridge: Texas Instruments PCI1510 PC card Cardbus Controller


- module thinkpad-acpi loaded with 'enable=false' 


PS

As this is my first bug report I am aware that it is possible I didn't include all necessary info.Sorry for that I will try to supply all needed informations that you will request.