Tejun Heo wrote:
CK804 IDE, at least mine, reports 80c in a lot of cases where it shouldn't. I dunno the reason but it also makes drives confused about cable type. Maybe it has the wrong capacitor attached or something. This is A8N-E from ASUS, probably one of the popular ones using nf4.
When that happens, libata EH does its job and slows the interface to udma33 after quite a few error messages. On IDE, if this happens, the drive is put into PIO mode making the machine painful to use.
Why? The old IDE core should just be downgrading UDMA to a speed where it starts working (i.e. 44 or 33 MB/s usually).
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