[Bug 780117] [NEW] Brasero finishes without error but unusable media [no simulation mode] (Ubuntu 11.04)

[Florian Sievers]

Public bug reported:

Binary package hint: brasero

When I burn a DVD (4,7 and 8,5 GB) Brasero show the progressbar till
about 30-40% (exact point is randomly) and than says, that it is
finalizing the media. This finalizing messages is showing for the rest
of the burning process (~10min @8x 8,5GB). After that, it ejects the
media without any error. But when I insert the media again, nothing
happens, except, that the DVD-Drive disappears from the "computer:///"
location in nautilus.

This problem only exists when burning On-The-Fly. Burning ISO Images or
automatic creation of ISO Images before burning works without problems.
The burning speed doesn't matter to this problem. I test 8x, 4x and 2x.
All the same problem. On-The-Fly burning using K3B works quite well @8x
speed.

One thing I also notice is, that Brasero uses 100% CPU on one core,
while K3B uses just about 5-15%.

I attached the last Brasero log. I don't know, why it just says, that it
was only at 49% and then says it's finished. The burning took about 28
minutes. The media was unusable on all my three devices (Linux/Windows).

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: brasero 2.32.1-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: fglrx
Architecture: amd64
Date: Mon May  9 22:10:24 2011
ExecutablePath: /usr/bin/brasero
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
ProcEnviron:
 LANGUAGE=de_DE:en
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: brasero
UpgradeStatus: No upgrade log present (probably fresh install)
XsessionErrors:
 (brasero:2453): GLib-CRITICAL **: the GVariant format string `(u)' has a type of `(u)' but the given value has a type of `()'
 (brasero:2453): GLib-CRITICAL **: g_variant_get: assertion `valid_format_string (format_string, TRUE, value)' failed
 (<unknown>:4557): GStreamer-CRITICAL **: gst_debug_add_log_function: assertion `func != NULL' failed

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


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

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https://bugs.launchpad.net/bugs/780117

Title:
  Brasero finishes without error but unusable media [no simulation mode]
  (Ubuntu 11.04)