Brasero thinks the capacity of a blank dvd -r is 4.3 GB when it's actually 4.7 GB or 4.3GiB

Bug #897550 reported by Doug McMahon
This bug affects 1 person
Affects Status Importance Assigned to Milestone
brasero (Ubuntu)

Bug Description

Starting in 11.10 nautilus reports file (iso) size in actual GB, but brasero incorrectly uses 4.3 GB as the capacity of a dvd -r

The actual numbers of a dvd -r are
available space - 4,706,074,624 bytes/2,297,888 sectors/4.7GB/4.38GIB
So an iso that is near the true max file size of a dvd -r, while it will fit , is now rejected by brasero as being to large for the media

Ex. - have an iso that can and has been burned to dvd -r

Actual size - 4,691,394,560 bytes
Nautilus/properties reports - 4.7 GB (4,691,394,560 bytes)
Brasero shows iso size as 4.7 GB, media capacity as 4.3 GB, refuses to burn

(as a comparison a dvd burner, ImgBurn, that just uses bytes/sectors for filesize & media avaialble space shows this & will burn
iso size - 4,691,394,560 bytes/2.290.520 sectors : dvd -r media - Free Sectors: 2,297,888 ; Free Space: 4,706,074,624 bytes

K3b use GIB so it also has no problems burning the above mentioned iso

So it would seem brasero, gnome/nautilus, ubuntu need to get on the same page here & brasero needs to use the same method for both filesize & media capacity, either GB or GIB

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: brasero 3.2.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-1.3-generic 3.2.0-rc2
Uname: Linux 3.2.0-1-generic i686
ApportVersion: 1.90-0ubuntu1
Architecture: i386
Date: Tue Nov 29 01:12:45 2011
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20111126)
 PATH=(custom, no user)
SourcePackage: brasero
UpgradeStatus: No upgrade log present (probably fresh install)

Revision history for this message
Doug McMahon (mc3man) wrote :
tags: added: regression-release
Doug McMahon (mc3man)
description: updated
Revision history for this message
Sebastien Bacher (seb128) wrote :

Thank you for your bug report, Pedro could you check if that happens to you and upstream it if that's the case?

Changed in brasero (Ubuntu):
assignee: nobody → Canonical Desktop Team (canonical-desktop-team)
assignee: Canonical Desktop Team (canonical-desktop-team) → Pedro Villavicencio (pvillavi)
Doug McMahon (mc3man)
summary: Brasero thinks the capacity of a blank dvd -r is 4.3 GB when it's
- actually 4.7 GB
+ actually 4.7 GB or 4.3GiB
Revision history for this message
Pedro Villavicencio (pedro) wrote :

I was able to reproduce the problem, I've sent it upstream at

Changed in brasero (Ubuntu):
importance: Undecided → Medium
status: New → Triaged
assignee: Pedro Villavicencio (pvillavi) → nobody
Changed in brasero:
importance: Unknown → Medium
status: Unknown → New
Revision history for this message
Doug McMahon (mc3man) wrote :

While brasero continues to have some possibly confusing reporting on the initial screen it now will actually go ahead & burn a 4.7GB iso to a dvd -r in 12.04, currently brasero (3.2.0-0ubuntu6) precise

So in that regard this bug can be considered fixed in 12.04
I will attach 2 screens to illistrate the possible confusing point

Screen here is of a 4.7GB (4464MiB) iso, brasero shows iso size of 4.7GB, f ree space 4.3GB, but no longer refuses to burn

Revision history for this message
Doug McMahon (mc3man) wrote :

Then here is an iso of 4.3GB (4119 MiB), shown as iso size of 4.3GB, free space as 4.7GB, which would obviously also be burned

So in any event no longer an issue, noting that once breasero starts the burns it switches to MiB anyway

Changed in brasero:
status: New → Expired
To post a comment you must log in.
This report contains Public information  Edit
Everyone can see this information.

Other bug subscribers

Remote bug watches

Bug watches keep track of this bug in other bug trackers.