I couldn't access DVDs (CDs worked fine) either, so I've tested the kernel parameter "libata.dma=1" which also didn't work for me. After putting "options libata dma=1" in /etc/modprobe.conf anything works fine again. Cheers, Jo Am Montag, den 12.11.2007, 21:33 +0000 schrieb Mario Rossi: > >Justin Conover írta: > > > > Seeing the following in dmesg referring to my dvd drive when I try and play something: > > > > end_request: I/O error, dev sr0, sector 205572 > > Buffer I/O error on device sr0, logical block 51393 > > Buffer I/O error on device sr0, logical block 51394 > > Buffer I/O error on device sr0, logical block 51395 > > > >Do you also get scary messages about hardware errors, too, > >like CRC errors during DMA transfer? If not, then your disk > >may be broken or just dusty. Look for small spot(s) on the > >data side, you may wash it off with warm soapy water :-) > >However if you get CRC errors in the log too, I have to tell that > >I got similar errors when booting the Fedora 8 install disk. > >I had to work it around with using the "libata.dma=1" option > >on boot. This only enables DMA for harddisks but not for > > I have the same error. > I've tried libata.dma=1 at boot (after pressing "Tab") but I get that the option is invalid and it > is ignored. > I've added it at the end, after a few other options already there. > > What is the exact spelling? > > Cheers > -- Joachim Kunze Alte Marktstrasse 16 eMail: joachim@xxxxxxxxxxxxx D-71665 Horrheim Tel:+497042-830006