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I use Ubuntu 12.04. Today I tried to burn an ISO file in a DVD-R disk using K3b. It used to work, but today, after one and a half minutes, it stopped saying that "cdrecord has no permission to open the device". I searched for a solution, and I found that I had to do something with k3bsetup. I tried to use it, but I had no idea what to do, and I couldn't find a guide, so I checked cdrecord and clicked apply. Now there is another error; it says "cdrecord returns an unknown error! (code 254)". What should I do?

karel
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user64386
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    If you are an Ubuntu user, you don't need any burning software. Brasero Disc Burner is includen in Ubuntu, and my opinion: Is much better. So why not try it? –  Aug 22 '14 at 15:39
  • For newer versions of ubuntu take a look here: https://askubuntu.com/questions/1032903/problem-with-k3b-in-18-04-releases-cdrecord-has-no-permission-to-open-the-devi – sneaky Jul 18 '18 at 07:40
  • If the problem comes from burning a BD disk then you cannot use Brasero, so ... – c05772 Jul 11 '21 at 20:53

2 Answers2

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I had similar problem and fixed it with the following steps:

  1. Open k3b.
  2. Go to Settings -> Setup system Permissions.
  3. Select all options and apply.

It will ask for your password (you must be admin).

If it doesn't works, open k3b from terminal with sudo -H k3b, and try same steps as before.

Should help.

Eliah Kagan
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pablodav
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    I selected all options except the "Use burning group", because when I tried, it said "There isn't group "burning" ". After that, there are some other errors, such as "OPC failed", "probably a buffer underrun occured", and once the "cdrecord returns an unknown error! (code 254)". I also tried reset, but still nothing. – user64386 Apr 28 '13 at 21:09
  • I tried today again to write a DVD and it worked. Thanks! – user64386 Apr 29 '13 at 07:56
  • I couldn't figure out how to "select all options", and selecting the drive and closing the dialog had no effect. However, sudo k3b did work. Thanks! – Chris Jenks Oct 14 '16 at 22:07
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This solve the problem:

cd /usr/bin/
sudo chmod 0755 cdrdao
sudo chmod a+s cdrdao
sudo chown root:root cdrdao
sudo chmod 0755 wodim
sudo chmod a+s wodim
sudo chown root:root wodim
MaxV
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