[CS-FSLUG] New Sony DVD Burner - Permissions Question

[Warren Sanders]

Don Parris wrote:

>I got it installed, but can only burn as Root.  My entry in /etc/fstab looks
>the same as it did for the old CD burner (which I replaced with the DVD
>burner).  I can't even manually detect the burner in K3B, although it is
>auto-detected and works fine when I logged in as root.  I know I shouldn't
>login as root on a graphical console, but I occasionally do for testing
>purposes - like this.
>
>Anyway, I'm not quite sure where to go from here.
>
>Don
>  
>
I believe it has been fixed now but there were some 2.6 kernels that k3b 
had problems with.


  Update on the kernel 2.6.9 issue

I finally did some testing and gathered some information on the kernel 
2.6.9 problem. Here is what I can tell you:

    * Cdrecord won't run anymore when configured suid root. The reason
      is that the new kernel forbids suid root programs to use the SCSI
      subsystem (or something like that, correct me if I am wrong :)
      So Cdrecord needs to be configured without suid root and the next
      version of K3bSetup will do that.
      Cdrdao does not have this problem. I think that's becasue it drops
      the root privileges in an earlier stage but I am not sure about that.
    * K3b is unable to properly handle external (USB, Firewire) devices
      on the new kernel. Whenever the tray is open it will not be
      recognized as a CD/DVD device and if K3b is trying to access it
      while the tray is open it will get strange wrong answers from the
      device.
      I don't know how to solve this. Evenmore I think I cannot solve it
      since the dvd+rw-tools have the exact same problem. Hopefully this
      will be fixed in a future kernel version.

So what does that mean for you? Well, you have to decide for yourselves. 
Since I have multiple external DVD devices I still stick to kernel 2.6.7 
since otherwise I would always have to make sure the tray is not open 
when starting K3b and trying to burn something. But if you don't have 
any external devices and configure cdrecord properly using kernel 2.6.9 
should be no problem.

*Update:* This issue seems to be related to SCSI devices rather than 
just external.

*Update II:* It seems as if the problems with SCSI devices have been 
fixed in kernel 2.6.10.