Additional Info: On System #1 (the affected one), when using the workaround 'libata.atapi_passthru16=0' the system dos NOT freeze or hang (already known) but i am getting this: Oct 01 12:58:51 ulquiorra.espada udisksd[2132]: Error probing device: Error sending ATA command IDENTIFY PACKET DEVICE to /dev/sr0: Unexpected sense data returned: udisks output during the test: # udisksctl monitor Monitoring the udisks daemon. Press Ctrl+C to exit. 12:58:33.417: The udisks-daemon is running (name-owner :1.47). 12:58:51.765: /org/freedesktop/UDisks2/drives/ATAPI___iHBS112___2_2512014_216134501013: org.freedesktop.UDisks2.Drive: Properties Changed TimeMediaDetected: 1380643131761935 OpticalNumTracks: 1 OpticalNumSessions: 1 OpticalBlank: true Optical: true Media: optical_bd_r MediaAvailable: true Size: 2048 12:58:51.766: /org/freedesktop/UDisks2/block_devices/sr0: org.freedesktop.UDisks2.Block: Properties Changed Size: 2048 If i were to believe the clock (should i?) then the error in the messages logfile happens after the udisks output... Cheers. -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html