Most recent kernel where this bug did not occur: This was working very recently, maybe a week ago (rawhide kernels which follow mainline closely) Distribution: Fedora Core Devel Hardware Environment: PLEXTOR Model: DVDR PX-716A Rev: 1.09 on nVidia Corporation CK804 Serial ATA Controller Problem Description: Accesses to the DVD drive are failing this week (worked fine with the same disk a week ago) and dmesg shows : end_request: I/O error, dev sr0, sector 0 Buffer I/O error on device sr0, logical block 0 end_request: I/O error, dev sr0, sector 8 Buffer I/O error on device sr0, logical block 1 Buffer I/O error on device sr0, logical block 2 Buffer I/O error on device sr0, logical block 3 Buffer I/O error on device sr0, logical block 4 Buffer I/O error on device sr0, logical block 5 Buffer I/O error on device sr0, logical block 6 Buffer I/O error on device sr0, logical block 7
Created attachment 6794 [details] dmesg command output
Created attachment 6795 [details] lspci -vv output
Please confirm whether - it still works in 2.6.14.4 and - it is still broken in 2.6.15-rc6.
Thank you very much for looking into this. I'm sorry I couldn't follow up on this quickly - Christmas time you know. I'll try to re-test with an earlier kernel and the latest Raw Hide kernel by jan 2nd. I've realized since the report the test disk is one of the new drm-ed silver disks, so maybe something changed which makes the "protection" effective when it wasn't before. Or maybe the problem is in the userspace updates that happened in Rawhide at about the same time. Anyway, re-testing with an older kernel should show whether it's an userspace (udev ?) or kernel problem. Happy New Year!
Created attachment 7997 [details] grep -i sda /var/log/messages* Kernel Version 2.6.15-1.1833_FC4 Distro Name Fedora Core release 4 (Stentz)
Please file fedora bugs in their own bugzilla, or reproduce on mainline