Date: Wed, 1 Sep 2010 10:50:22 -0500 (CDT) From: "Sean C. Farley" <scf@FreeBSD.org> To: Buganini <buganini@gmail.com> Cc: Garrett Wollman <wollman@FreeBSD.org>, avg@icyb.net.ua, current@FreeBSD.org Subject: Re: Difficulty playing DVDs under AHCI/CAM? Message-ID: <alpine.BSF.2.00.1009011032460.5375@thor.farley.org> In-Reply-To: <AANLkTint5bqYoA7gscywbnpg-AH3Fzu=vUR=DUOA8LtV@mail.gmail.com> References: <19577.18337.120013.129482@hergotha.csail.mit.edu> <4C79499B.3050305@icyb.net.ua> <201008281741.o7SHfqH1008851@hergotha.csail.mit.edu> <AANLkTint5bqYoA7gscywbnpg-AH3Fzu=vUR=DUOA8LtV@mail.gmail.com>
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On Sun, 29 Aug 2010, Buganini wrote: > BTW, it seems that DVD burning with ahci is broken, burning a CD is > okay, but I never burn a DVD sucessfully with ahci. Always get > somethings like "unable to write@60H input/output error" and many > "(cd0:ahcich2:0:0:0): SCSI sense: ILLEGAL REQUEST csi:43,0,0,c > asc:24,0 (Invalid field in CDB): Command byte 6 is invalid" in dmesg, > > With ahci unloaded, I see "(cd0:ata4:0:0:0): SCSI sense: ILLEGAL > REQUEST csi:43,0,0,c asc:24,0 (Invalid field in CDB): Command byte 6 > is invalid" once, but it works. > > But I can read data DVD with ahci and sucessfully verify data with > diff. While I have not had time to narrow it down, I have also had problems with burning DVD+R on my drive (LITE-ON DVDRW LH-20A1S 9L09) with the ahci driver on 8-STABLE using cdrecord. However, CD-RW's and DVD+RW's are not a problem. At the beginning of a failed burn, it seems like there is a short pause near the beginning (maybe after a block or two has been written, but I do not recall). If I find time, I will try again to burn a disc along with collecting all the debugging information I can. One thing I need to try, and you may too, is to see if there are any firmware updates for the drive. I see there is one for mine which I will try. Unfortunately, it does not say on the site what it improves unless the "Match more media" is it. Sean -- scf@FreeBSD.org
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