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I'm trying to write Bluray disks on Ubuntu 14.10 since I bought my ASUS SBW-06D2X-U external USB unit. What happens is that it get exessively slow (0.2-0.3x) and it crashes when it reaches around 1Gb. In k3b software the device buffer oscilates between 21-29% until crashing.
I found some people saying it may be a dma problem but I read other messages saying that DMA doesn't work on USB drives. And also couldn't find any procedure on how to activate DMA. Tried also Silicon-Empire and Brasero but it won't even start to write. K3b has all the programs it needs including cdrtools as seen in K3b configurations. I try to write several folders with about 37GB of data, and try to create the image and write it. Also tried writting the image and burn it with growisofs, and got the same result.
I'm using 50Gb bluray medias and my notebook is a Asus Vostro 3550, I7, 8gb. It has a 120Gb ssd for the root partition and a 1TB HDD where the files that I want to write are saved. I have set K3b to save the image in the HDD.
Edit:
Results to the asked tests:
Downloaded Nero for linux and it had equals results.
Still on 50gb medias:
I tried to write aprox 270MB of data, and it failed again.
Bought 25gb medias and it finally worked. But it took 6 hours and 40 minutes to write a 25gb Bluray.
Now here says it suppport double layer medias and here one customer has written it not only works in linux, as it said that it writed 50gb medias with it:
"Awesome to be able to backup my partitions to 25-50GB discs!"
So I guess it's not drive related. Anyone as tried this in other Linux distribuitions ? I think I'm gonna give it a try on Mint and Fedora.
Edit2:
In other computer (i5, 8gb ram, 500gb Hdd, Ubuntu 12.04 32bits):
Tried to write aprox.40gb directly (I mean without making an image) to a 50gb media with nero and after 2 hours aprox (15% of the burn) nero application crashed.
Successfully burned aprox.1.6gb directly (again without making an image) to a 50gb media with nero. Took apox. 35 mins. So this proves my drive CAN write do 50gb media.
In this moment I'm trying to write aprox 40gb from a saved image. It's the only lacking test. I'll report it's result tomorrow as it will take several hours to finish.
Nelson Teixeira
Posted 2014-12-22T17:35:37.723
Reputation: 171
Have you tried the optical drive with another computer to see if it behaves the same way? What kind of file(s) are you trying to write to the disk? A disk image, or just a bunch of files? – Ƭᴇcʜιᴇ007 – 2014-12-22T17:42:38.610
Well.. didn't try to acctually write the disks on other computer, tried only mounting it. As I said, I try to write several folders with about 37GB of data, and try to create the image and write it. Both methods didn't work. – Nelson Teixeira – 2014-12-22T17:44:42.490
Edited the question to make this more clear. – Nelson Teixeira – 2014-12-22T17:46:11.910
What happens if you try to burn less data? Like say just 1GB or a few hundred MB, does that work? – Ƭᴇcʜιᴇ007 – 2014-12-22T17:52:43.417
Will try this and post results. – Nelson Teixeira – 2014-12-22T18:00:37.460
Are you trying to write a Single layer or Dual layer BlueRay DVD? Sounds like you are trying to use the Dual Layer write. The drive you have might not be able to handle Dual Layer. You could use Single Layer BlueRay DVDs (25GB) and see what happens. – mdpc – 2014-12-22T18:30:20.197
@mdpc It's been several months that I've bought this bluray writer and can't get it to work, or get any info about it. I'm trying to get all the help that I can. It's also in askbuntu, ubuntu forums, and linux questions. But if you think this is a bad practice I can delete the post in any of the sites. My idea is that every site has different users. Why is this a bad idea ? – Nelson Teixeira – 2014-12-22T18:42:46.010
@mdpc don't need to answer. Have read http://meta.stackexchange.com/questions/64068/is-cross-posting-a-question-on-multiple-stack-exchange-sites-permitted-if-the-qu deleted it from other stackexchange sites, and left only in this one.
– Nelson Teixeira – 2014-12-22T18:50:36.477I will try 25GB disks and the other things suggested and post the results once I complete. Have to buy the disks. :) – Nelson Teixeira – 2014-12-22T18:53:47.147
I've never owned a Bluray drive, but (extrapoloting from buring CD's and DVD's) is it possible the problem relates to using a USB2 Interface while needing a USB3 interface so the burner can keep up with the speed of the disk ? – davidgo – 2014-12-29T18:31:00.053
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@davidgo The drive has a USB 2.0 interface: SBW-06D2X-U specs.
– Andrew Morton – 2014-12-29T18:37:59.897