Comment 12 for bug 153096

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StarNamer (derek-valedon) wrote : Re: Won't find my 2nd HD, "Failed to set xfermode" ATA errors

I'm getting similare "failed to set xfermode" errors with a CDROM under 2.6.22 (ubuntu 7.10) which works fine with 2.6.20 (7.04)

kernel: [ 101.398122] ata_piix 0000:00:07.1: version 2.11
kernel: [ 101.398763] scsi0 : ata_piix
kernel: [ 101.398986] scsi1 : ata_piix
kernel: [ 101.399100] ata1: PATA max UDMA/33 cmd 0x000101f0 ctl 0x000103f6 bmdma 0x0001f000 irq 14
kernel: [ 101.399115] ata2: PATA max UDMA/33 cmd 0x00010170 ctl 0x00010376 bmdma 0x0001f008 irq 15
kernel: [ 104.698151] ata1.01: ATAPI: CDA86801ISE, F1.05000, max PIO3
kernel: [ 104.709735] ata1.01: failed to set xfermode (err_mask=0x1)
kernel: [ 104.709796] ata1: failed to recover some devices, retrying in 5 secs
kernel: [ 110.059836] ata1.01: failed to set xfermode (err_mask=0x1)
kernel: [ 110.059901] ata1.01: limiting speed to PIO2
kernel: [ 110.059910] ata1: failed to recover some devices, retrying in 5 secs
kernel: [ 115.410372] ata1.01: failed to set xfermode (err_mask=0x1)
kernel: [ 115.410427] ata1.01: disabled
kernel: [ 116.078919] ata2.00: ATA-6: SAMSUNG SV4084H, PM100-22, max UDMA/100
kernel: [ 116.078935] ata2.00: 79730784 sectors, multi 0: LBA
kernel: [ 116.086822] ata2.00: configured for UDMA/33

Obviously, this may not be related. Naturally the 'irqpoll' fix doesn't help because it's finding the controller and drive and just failing to configure it.