Public bug reported: On inserting a disc into my DVD-RW drive, I very often got some serious looking I/O errors in the kernel logs. At first I put this down to hardware failure and bought a new drive. However, I not only have the same problem with the new drive, but the way the problem manifests intself leads me to believe it could possibly be a kernel bug. The old drive was a Pioneer DVD-RW DVR-108 and the new one is a Pioneer Pioneer DVD-RW DVR-116D.
The errors only appear when I insert a disc into the drive. Not only that but I can do things like playback DVD movies and read entire discs (I tested using dd_rescue) without a single I/O error appearing in the kernel logs. The type of disc also has a bearing on the problem. If I insert a data DVD into the drive, I don't get any errors. If I insert a video DVD I get the following kind of errors: [ 3130.194461] end_request: I/O error, dev sr0, sector 16039324 [ 3130.248798] end_request: I/O error, dev sr0, sector 16039320 [ 3130.302954] end_request: I/O error, dev sr0, sector 16039328 [ 3130.303145] UDF-fs: Partition marked readonly; forcing readonly mount [ 3130.398541] UDF-fs INFO UDF: Mounting volume 'ADAM_AND_JOE', timestamp 2006/03/09 09:54 (1000) If I insert a data CD into the drive, I don't get any errors. Audio CDs give the following error: [ 4267.245458] end_request: I/O error, dev sr0, sector 0 [ 4267.245477] Buffer I/O error on device sr0, logical block 0 [ 4267.245486] Buffer I/O error on device sr0, logical block 1 [ 4267.245503] Buffer I/O error on device sr0, logical block 2 [ 4267.245509] Buffer I/O error on device sr0, logical block 3 [ 4267.245515] Buffer I/O error on device sr0, logical block 4 [ 4267.245521] Buffer I/O error on device sr0, logical block 5 [ 4267.245527] Buffer I/O error on device sr0, logical block 6 [ 4267.245533] Buffer I/O error on device sr0, logical block 7 I think this may have to do with the dialog that pops up when I insert a disc into the drive (the one that asks which program you want to launch), or something related to it. It seems that whenever that dialog appears, I get the I/O errors. Maybe whatever is scanning the disc to detect what type it is is doing something weird, resulting in the errors? ProblemType: Bug Architecture: amd64 CurrentDmesg: DistroRelease: Ubuntu 8.10 NonfreeKernelModules: nvidia Package: linux-image-2.6.27-9-generic 2.6.27-9.19 ProcCmdLine: root=UUID=03a1e31a-442c-4616-ac13-e1b6005c5ba5 ro quiet splash ProcEnviron: PATH=/home/username/bin:/home/username/.cabal/bin:/usr/local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games LANG=en_GB.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.27-9.19-generic SourcePackage: linux ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug -- IO errors when inserting a disc https://bugs.launchpad.net/bugs/304954 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs