Can you apply the attached patch and report what the kernel says with ACPI turned on? -- tejun
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c index 019d8ff..6a27a7f 100644 --- a/drivers/ata/libata-acpi.c +++ b/drivers/ata/libata-acpi.c @@ -473,8 +473,8 @@ static void taskfile_load_raw(struct ata_port *ap, struct ata_taskfile tf; unsigned int err; - if (ata_msg_probe(ap)) - ata_dev_printk(atadev, KERN_DEBUG, "%s: (0x1f1-1f7): hex: " + if (1 || ata_msg_probe(ap)) + ata_dev_printk(atadev, KERN_INFO, "%s: (0x1f1-1f7): hex: " "%02x %02x %02x %02x %02x %02x %02x\n", __FUNCTION__, gtf->tfa[0], gtf->tfa[1], gtf->tfa[2],