I made a "copy to image file" of Fedora 21 beta LiveDVD. This is what I saw when DVD started to spin:
ata5: exception Emask 0x10 SAct 0x0 SErr 0x4000000 action 0xe frozen ata5: irq_stat 0x00000040, connection status changed ata5: SError: { DevExch } ata5: hard resetting link ata5: SATA link down (SStatus 0 SControl 300) ata5: EH complete and this is what I saw when DVD stopped spinning: ata5: exception Emask 0x10 SAct 0x0 SErr 0x4000000 action 0xe frozen ata5: irq_stat 0x00000040, connection status changed ata5: SError: { DevExch } ata5: hard resetting link ata5: SATA link down (SStatus 0 SControl 300) ata5: EH complete It looked as if the logs were triggered by the DVD-RW drive. Observation about media players triggering these logs remains valid, though. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1385165 Title: "Exception Emask 0x10 SAct 0x0 SErr 0x4000000 action 0xe frozen" when playing media To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1385165/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs