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For me 16x CD write speed is okay. I have old hardware which was able to write DVDs at 1x, back in hardy. In lucid now, I dont get speed ...
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  1. #1
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    Smile Hardware Correction: How to change DVD write speed


    For me 16x CD write speed is okay.

    I have old hardware which was able to write DVDs at 1x, back in hardy.

    In lucid now, I dont get speed of less than 4x.

    Tested on k3b, xfburn, and brasero. But all start at bottom 4x write speed.

    How can I do it?

    Thanks in advance......

  2. #2
    Linux Guru Rubberman's Avatar
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    Have you tried using dvdrecord from the command line? You can specify the option "speed=0" which will use the lowest possible speed supported by the drive and media. From the dvdrecord (wodim) man page:
    If you use speed=0 with a MMC compliant drive, wodim will switch to the
    lowest possible speed for drive and medium. If you are using an old (non MMC)
    drive that has problems with speed=2 or speed=4, you should try speed=0.
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!

  3. #3
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    The problem is not the wodim command or cdrecord or dvdrecord.

    In k3b I tried at 1x, but it says 1x is incompatible. And makes it 4x.

    Upto ubuntu 8.04, all was good by recording at 1x both for cd and dvd.

    This has some thing to do at device configuration level or detection level. If it can be forced to use lower speed, may be it will work.

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    Can anyone guide me, where to find the device configuration.


    /etc/hdparm.conf

    doent seems to help out.

  5. #5
    Linux Guru Rubberman's Avatar
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    Since these tools generally interrogate the hardware directly to determine these parameters, I doubt that you can change that. This is why I suggest you try the command-line tools instead of the GUI ones like brasero and k3b.
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!

  6. #6
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    Hi Rubberman

    I have tested cli via wodim and growisofs, but it starts at 1x, but within seconds says that write speed is turned to 4x. Next continues to record.

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    Linux Guru Rubberman's Avatar
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    So, does it successfully burn the disc?
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!

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    Hi Rubbrman

    It burns dvd at 4x min. Fully, ok.

    I want to write at 1x.

  9. #9
    Linux Guru Rubberman's Avatar
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    If it works ok at 4x, why do you want to write it at 1x?
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!

  10. #10
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    Hi Rubberman

    6 years ago when I started using first CD-RW I found out that if I write at 52x, the same Cd may cause unreadability on many cdrom devices. If I write at 16x, it is easily readble by any cdrom device.

    Now my dvd device cannot read the dvd written at 4x. On the other way around it reads excellently if written at 1x.

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