Am Montag, den 22.12.2008, 19:02 +0900 schrieb ein unbekannter Absender: > Robert Hancock wrote: > > linux-ide@xxxxxxxxxxxxxxxxx wrote: > >> 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? > > > > That case was a bit different in that it was a CompactFlash device > > (which has some different rules, especially older ones), but there was > > also a SATA-PATA bridge chip involved (which seems quite likely the case > > here too since the drive reports UDMA33 maximum). This could be another > > case of the bridge chip being broken. Set Features - Set Transfer Mode > > is a mandatory command that all ATA devices must implement, and the > > device really can't be used properly if it's not successful (for true > > SATA devices it's mostly vestigial, but if there's any actual PATA > > involved, it's required). It's rather bizarre that having a disc > > inserted avoids the problem. > > Aiee... these broken devices. :-( > > So, w/ a disk inserted, there's no error whatsoever? There's no error in dmesg output. But when I boot with a disk in the drive, I get the following errors in the boot screen: * Loading hardware devices [23.927373] end_request: I/O error, dev sr0, sector 1431744 [23.927373] Buffer I/O error on device sr0, logical block 178968 and then several more with just a different number in the square brackets. However, that does not seem to affect the operation of the drive. > Can you please > post the output of "hdparm -I /dev/sr0"? /dev/sr0: ATAPI CD-ROM, with removable media Model Number: PIONEER DVD-RW DVRTD08 Serial Number: Firmware Revision: 1.00 Standards: Likely used CD-ROM ATAPI-1 Configuration: DRQ response: 50us. Packet size: 12 bytes Capabilities: LBA, IORDY(can be disabled) Buffer size: 64.0kB DMA: mdma0 mdma1 mdma2 udma0 udma1 *udma2 Cycle time: min=120ns recommended=120ns PIO: pio0 pio1 pio2 pio3 pio4 Cycle time: no flow control=120ns IORDY flow control=120ns Commands/features: Enabled Supported: * Power Management feature set * PACKET command feature set * DEVICE_RESET command * NOP cmd * SATA-I signaling speed (1.5Gb/s) * Host-initiated interface power management * Phy event counters Device-initiated interface power management * Software settings preservation -- 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
