[Bug 36486] very choppy sound on heavy disc access

[sledgehammer89]

Public bug reported:
https://launchpad.net/malone/bugs/36486

Affects: linux-meta linux (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

Description:
Does have a *very* (every 3-5 sec) stuttering and choppy or no sound
output for seconds when creating a DVD iso file (=heavy disc access)

Players tested: rhythmbox, beep-media-player (playing a mp3 file)
command for creating iso-file:  mkisofs -dvd-video -o videodvd.iso ./DVD
orig hdparm: 16, dma on
also tested with hdparm: 32bit, dma on

system: dapper (gnome) with updates to now

should be: 98% (most of the time) smooth sound (maybe 1 or 2 choppy
sequences)

tested against: Slackware-current (2.6.15, xorg6.9, kde3.5) on same
PC/harddisc (other partition) with 32bit, dma on. Same situation with
beep-media-player playing mp3 and creating the same iso file

Sorry, doesn't know what package is wrong, maybe the kernel?

my hardware: p4 2.4ghz 1gb ram 160gb samsung (8mb cache) nvidia 6600gt
sblive