Hello, Concerning me : 2.6.27-11-generic / x86_64 / Kubuntu 8.10 Audio CD : [17083.686262] end_request: I/O error, dev sr0, sector 0 [17083.686282] Buffer I/O error on device sr0, logical block 0 [17083.686291] Buffer I/O error on device sr0, logical block 1 [17083.686301] Buffer I/O error on device sr0, logical block 2 [17083.686308] Buffer I/O error on device sr0, logical block 3 [17083.686315] Buffer I/O error on device sr0, logical block 4 [17083.686321] Buffer I/O error on device sr0, logical block 5 [17083.686328] Buffer I/O error on device sr0, logical block 6 [17083.686334] Buffer I/O error on device sr0, logical block 7 [17083.702953] end_request: I/O error, dev sr0, sector 0 [17083.702968] Buffer I/O error on device sr0, logical block 0 [17083.708503] end_request: I/O error, dev sr0, sector 4 [17083.708527] Buffer I/O error on device sr0, logical block 1 Data CD : OK (but I'm quite sure that I already had some data CD whith errors like mentionned just above...) Blanck CD : [17417.633361] cdrom: This disc doesn't have any tracks I recognize! [17417.660771] end_request: I/O error, dev sr0, sector 0 [17417.660793] Buffer I/O error on device sr0, logical block 0 [17417.665326] end_request: I/O error, dev sr0, sector 0 [17417.665339] Buffer I/O error on device sr0, logical block 0 Data DVD : I don't have any :( Blanck DVD : [17735.652064] cdrom: This disc doesn't have any tracks I recognize! [17735.693772] end_request: I/O error, dev sr0, sector 0 [17735.693795] Buffer I/O error on device sr0, logical block 0 [17735.698186] end_request: I/O error, dev sr0, sector 0 [17735.698203] Buffer I/O error on device sr0, logical block 0 Video DVD : mounts correctly, but with errors in 'dmesg'. I'm able to open it in Dolphin, I can see the content. [17999.519073] end_request: I/O error, dev sr0, sector 8932208 [17999.519096] Buffer I/O error on device sr0, logical block 1116526 [17999.992666] end_request: I/O error, dev sr0, sector 8932208 [17999.992688] Buffer I/O error on device sr0, logical block 1116526 But when I want to read the content, it's impossible : [18084.635103] end_request: I/O error, dev sr0, sector 2256 [18084.635117] Buffer I/O error on device sr0, logical block 564 [18084.683760] end_request: I/O error, dev sr0, sector 2256 [18084.683773] Buffer I/O error on device sr0, logical block 564 [18084.848949] end_request: I/O error, dev sr0, sector 77780 [18084.848962] Buffer I/O error on device sr0, logical block 19445 [18084.848971] Buffer I/O error on device sr0, logical block 19446 [18084.848975] Buffer I/O error on device sr0, logical block 19447 [18084.848978] Buffer I/O error on device sr0, logical block 19448 [18084.848981] Buffer I/O error on device sr0, logical block 19449 [18084.853730] end_request: I/O error, dev sr0, sector 77780 [18084.853741] Buffer I/O error on device sr0, logical block 19445 [18085.291807] end_request: I/O error, dev sr0, sector 1236 [18085.291820] Buffer I/O error on device sr0, logical block 309 [18085.291828] Buffer I/O error on device sr0, logical block 310 [18085.296535] end_request: I/O error, dev sr0, sector 1236 [18097.661368] end_request: I/O error, dev sr0, sector 2490408 [18097.661389] __ratelimit: 6 callbacks suppressed [18097.661398] Buffer I/O error on device sr0, logical block 622602 [18097.661412] Buffer I/O error on device sr0, logical block 622603 [18097.661425] Buffer I/O error on device sr0, logical block 622604 [18097.661433] Buffer I/O error on device sr0, logical block 622605 [18097.661441] Buffer I/O error on device sr0, logical block 622606 [18097.661449] Buffer I/O error on device sr0, logical block 622607 [18097.661457] Buffer I/O error on device sr0, logical block 622608 [18097.661465] Buffer I/O error on device sr0, logical block 622609 [18097.666626] end_request: I/O error, dev sr0, sector 2490408 [18097.666639] Buffer I/O error on device sr0, logical block 622602 [18097.666649] Buffer I/O error on device sr0, logical block 622603 [18097.673216] end_request: I/O error, dev sr0, sector 2490408