(cc'ing Albert, Mark and Sergei. Hi!) Art Haas wrote: > Hi. Sorry to say the CD-ROM is still not found. Full 'dmesg' output > listed below in hopes it provides clues. Erggghh.. I'm sorry too. I thought I found it this time. > ata_piix 0000:00:07.1: version 2.00ac7 > ata2: PATA max UDMA/33 cmd 0x170 ctl 0x376 bmdma 0xF008 irq 15 You have UDMA/33 PATA port. > ata2.00: ATAPI, max MWDMA1 The initial reset and PACKET_IDENTIFY went well. > ata2.00: revalidation failed (errno=-2) Then, PACKET_IDENTIFY after configuring transfer mode fails with -ENOENT. Meaning it saw (status & (ATA_BUSY|ATA_DRQ|ATA_ERR|ATA_DF)) == 0 in HSM_ST. libata resets silently and tries to revalidate the device. > ata2.00: limiting speed to PIO4 > ata2: failed to recover some devices, retrying in 5 secs > ata2.00: revalidation failed (errno=-2) > ata2.00: limiting speed to PIO0 > ata2: failed to recover some devices, retrying in 5 secs > ata2.00: revalidation failed (errno=-2) > ata2.00: disabled All of those tries fail and libata gives up the device. * Something went wrong with mode programming. It seems pretty old (reporting max UDMA/33). Art, can you post the result of 'lspci -nn'? * After mode programming, it might need some delay between clearing ATA_BUSY and setting ATA_DRQ. Dunno if this is possible. Just throwing out thoughts here. So, PATA gurus, can you bless us with enlightenment? :-) -- tejun - 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
