[Bug 928703] [NEW] SATA mode ACPI causes problems when writing DVD-s

[EdgarPE]

Public bug reported:

I have a Dell Latitude E6420 notebook, with a DVD-RW in it.
When I write DVD-s (to DVD-R discs) the writing speed drops to almost zero and struggles there for about 1-2 minutes. After this the writing completes and the checksum test also pass. This happens 95% of the time when I write movie DVD-s. When I play a disk in a stand alone player which was written with problem indicated here, the playback also struggles at the exact same place where the writing had problems.

If I disable the ACPI SATA mode in bios, the problem disappears. But I
need ACPI because of trim command for my SSD.

I tried with divverent disc, same problem
I tried on Ubuntu 11.04 and 11.10, same problem.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: brasero 2.32.1-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.38-13.54-generic 2.6.38.8
Uname: Linux 2.6.38-13-generic x86_64
Architecture: amd64
Date: Wed Feb  8 09:42:03 2012
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/brasero
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: brasero
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: brasero (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug apport-lpi natty

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https://bugs.launchpad.net/bugs/928703

Title:
  SATA mode ACPI causes problems when writing DVD-s

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