This is probably followup to http://www.spinics.net/lists/linux-ide/msg09412.html I post it first to confirm the problem, then because I am not sure whether the patch handles everything I quote here. Kernel 2.6.21-rc5 (2.6.18 behaved similarly). Hardware: modern intel (dual core on gigabyte 965, HP DVD 940, dvd is the only IDE device, SATA hard drive is used in AHCI mode) I observe plenty of CDROM-related errors in my logs, in spite of the fact that my CD/DVD device works correctly (at least, reads and writes correctly). Example errors: Apr 3 11:22:34 cauchy kernel: hdb: status error: status=0x58 { DriveReady SeekComplete DataRequest } Apr 3 11:22:34 cauchy kernel: ide: failed opcode was: unknown Apr 3 11:22:34 cauchy kernel: hdb: drive not ready for command (those filled my logs until I disabled HAL cd monitoring and show from time to time) Apr 4 13:12:00 cauchy kernel: hdb: packet command error: status=0x51 { DriveReady SeekComplete Erro r } Apr 4 13:12:00 cauchy kernel: hdb: packet command error: error=0x54 { AbortedCommand LastFailedSens e=0x05 } Apr 4 13:12:00 cauchy kernel: ide: failed opcode was: unknown Apr 4 13:12:00 cauchy kernel: ATAPI device hdb: Apr 4 13:12:00 cauchy kernel: Error: Illegal request -- (Sense key=0x05) Apr 4 13:12:00 cauchy kernel: Cannot read medium - incompatible format -- (asc=0x30, ascq=0x02) Apr 4 13:12:00 cauchy kernel: The failed "Read Subchannel" packet command was: Apr 4 13:12:00 cauchy kernel: "42 02 40 01 00 00 00 00 10 00 00 00 00 00 00 00 " (those are repeated about once per second when DVD movie is in the drive, both when it is played, and when left unused) - 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
