DVD Writer problems

Julien Cigar jcigar at ulb.ac.be
Wed Jun 4 15:06:28 UTC 2008

I have also this problem on almost all my machines .. the only solution
I found is to disable DMA (atapi_dma), but then performances are very
poor ..
If you find a solution please let us know :)

On Wed, 2008-06-04 at 19:13 +1000, Jerahmy Pocott wrote:
> Hello,
> I'v been having problems getting this DVD drive working at all, I'm  
> running on 6.3 p1..
> On boot it is detected as:
> acd0: DMA limited to UDMA33, controller found non-ATA66 cable
> acd0: DVDR <ATAPI DVD A DH20A4P/9P57> at ata0-master UDMA33
> Which is the first sign of trouble, it is connected by an ATA66  
> capable cable and I'v tried swapping over the cable to rule out a  
> faulty cable and the message is the same.
> It is connected to:
> atapci0: <Intel ICH6 UDMA100 controller> port  
> 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xffa0-0xffaf irq 16 at device  
> 31.1 on pci0
> ata0: <ATA channel 0> on atapci0
> ata1: <ATA channel 1> on atapci0
> When trying to use burncd on it, the drives light flashes for a while  
> then after a delay I get:
> acd0: FAILURE - READ_TRACK_INFO ILLEGAL REQUEST asc=0x24 ascq=0x00
> On the console and any further attempt to use the drive results in  
> that message being repeated without any delay, also trying to use the  
> atapiscsi device results in a similar message:
> acd0: FAILURE - INQUIRY ILLEGAL REQUEST asc=0x24 ascq=0x00
> Any thoughts on what problem here is? It seems that the controller  
> isn't working properly with it?
> Cheers,
> J.
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Julien Cigar
Belgian Biodiversity Platform
Université Libre de Bruxelles (ULB)
Campus de la Plaine CP 257
Bâtiment NO, Bureau 4 N4 115C (Niveau 4)
Boulevard du Triomphe, entrée ULB 2
B-1050 Bruxelles
Mail: jcigar at ulb.ac.be
@biobel: http://biobel.biodiversity.be/person/show/471
Tel : 02 650 57 52

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