U9.04:Brasero: DVD.iso md5sum is different with the source using H-L ODD.

Bug #372067 reported by Jason Lee on 2009-05-05
This bug report is a duplicate of:  Bug #354995: Brasero Checksum Error. Edit Remove
This bug affects 1 person
Affects Status Importance Assigned to Milestone
brasero (Ubuntu)

Bug Description

As the system configured with H-L optical disc writer to create an DVD.iso image from the source, the md5 checksum of the image is different from the source.
However, by burning the image to the disc and verify the md5sum, the checksum is the same as the source disc again.

Further verification: By installing another burining application called "K3B" does not have this issue occurred.

Steps to replicate:
1. Ensure the system is installed with Ubuntu 9.04 (Dell-reinstall) and configured with H-L (Hitachi-LG) optical disc writer.
2. Insert a data DVD into the optical drive and launch the Brasero application.
3. Create an .iso image of the disc.
4. As finished, execute the command "md5sum XXX.iso" under the Terminal. (where XXX is the name of the .iso image)
5. Again, execute the command "md5sum /dev/cdrom" under the Terminal.
6. Observe the md5 checksum reported from both. (i.e. - Both checksums are different)

System Architecture: i686
Kernel version: 2.6.28-11-generic

Config 1:
CPU: Intel Cel 450
Chipset: Intel G41 + ICH7
HDD: Western Digital 80GB
ODD: H-L Data Storage GT10N F/W: A104
Memory: Hynix DDR2 800 1GB
Audio Chipset: Conexant CX20582-10Z
LVDS: LG Philips 17" / LG Philips 19"
Card Reader: VIA VT6325
LAN: Realtek R8111DL

affects: ubuntu → brasero (Ubuntu)
Krzysztof Klimonda (kklimonda) wrote :

Brasero should verify disc after burning it - does it show any errors?

Changed in brasero (Ubuntu):
status: New → Incomplete
Krzysztof Klimonda (kklimonda) wrote :

Another good way of testing it would be to verify md5 sums of all files to see if they have changed or is there a problem with something else.

Jason Lee (jason-lee-wistron) wrote :

Hi Krzysztof,

There is no error reported after the disc burning.
Besides, the file content of the disc is fine.
Just that the md5 checksum of the .iso image created is different from the source. However, by burning the image to another disc, the md5 checksum is the same with the source again.

Another disc burning application from KDE called K3B is also downloaded and give a try on this. Both md5 checksum of the image created and the source are the same.

vocx (eliudcabrera) wrote :

Please look at bug #354995

There are several reports on DVDs showing errors.
Some of them appear to be okay, while others appear to be corrupted.

JULLIAN david (julliandavid) wrote :

Integrity error burning for some months in the prints made ​​by Brasero.

Its been about me that I see an image by burning Ubuntu and checking his MD5SUM was corrupt. I had put her on the back of my drive that had aged, because I had to reinstall but the problem was still present.

Today I completely change the PC and reinstall all the system is the problem recurs. The thing is that I fall on the same exact same ISO MD5SUM for a German user here: ... http://forum.ubuntuusers.de/topic/64bit erst-zu / 2 /

ubuntu-11.10-desktop-amd64.iso downloaded http://ubuntu.virginmedia.com/releasktop-amd64.iso
Official MD5SUM: 62fb5d750c30a27a26d01c5f3d8df459
MD5SUM Obtained with Brasero 8550312216c29a83a2713f8dc36c0935

So I wanted test if it was more serious or Brasero. With the K3B no problem.


Une erreur d'intégrité de gravure depuis quelque mois dans les gravures faite par Brasero.

Sa fait quelque moi que je l'ai constater en gravant une image Ubuntu et en vérifiant son MD5SUM était corrompu. Javais mis sa sur le dos de mon graveur qui avait vieillies, car j'avais réinstaller mais le problème était toujours présent.

Aujourd'hui je viens entièrement de changer de PC et réinstaller tous le système est le problème se reproduit. Le truc c'est que je tombe exactement sur la même MD5SUM pour la même ISO qu'un utilisateur allemand ici : http://forum.ubuntuusers.de/topic/64bit … zu-erst/2/

ubuntu-11.10-desktop-amd64.iso téléchargé sur http://ubuntu.virginmedia.com/releasktop-amd64.iso
MD5SUM Officiel : 62fb5d750c30a27a26d01c5f3d8df459
MD5SUM Obtenue avec Brasero : 8550312216c29a83a2713f8dc36c0935

J'ai donc voulue teste si c’était bien brasero ou plus grave. Avec K3B la pas de problème.

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