Hello, several Sony Vaio laptops seem to have the PIONEER DVD-RW DVRTD08 DVD/CD drive built in. This drive is available only when a disc is inserted during boot. when no disc is present, dmesg has [ 3.715535] ata2: SATA max UDMA/133 abar m2048@0xd3e04000 port 0xd3e04180 irq 218 [ 4.368166] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 4.380063] ata2.00: ATAPI: PIONEER DVD-RW DVRTD08, 1.00, max UDMA/33 [ 9.380102] ata2.00: qc timeout (cmd 0xef) [ 9.380112] ata2.00: failed to set xfermode (err_mask=0x4) [ 9.700093] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 19.712097] ata2.00: qc timeout (cmd 0xef) [ 19.712105] ata2.00: failed to set xfermode (err_mask=0x4) [ 19.712158] ata2: limiting SATA link speed to 1.5 Gbps [ 19.712160] ata2.00: limiting speed to UDMA/33:PIO3 [ 20.032106] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310) [ 30.040084] ata2.00: qc timeout (cmd 0xef) [ 30.040091] ata2.00: failed to set xfermode (err_mask=0x4) [ 30.040144] ata2.00: disabled [ 30.056102] ata2: hard resetting link [ 30.376108] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310) [ 30.376114] ata2: EH complete when a disc is present, dmesg has [ 3.804304] ata2: SATA max UDMA/133 irq_stat 0x00000040, cirq 219 [ 5.268599] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 5.270213] ata2.00: ATAPI: PIONEER DVD-RW DVRTD08, 1.00, max UDMA/33 [ 5.272217] ata2.00: configured for UDMA/33 You'll find more details at http://ubuntuforums.org/showthread.php?p=6412465#post6412465 Having read http://www.mail-archive.com/linux-ide@xxxxxxxxxxxxxxx/msg06127.html I guess it is not OK for the device to timeout in response to 0xef. Still I would like to be able to use the drive without having to insert a CD at every boot. Is there any workaround? Can't the driver just treat repeated timeouts like it would treat an abort? Any help would be greatly appreciated. Regards, Moritz Rigler -- 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
