Re: [PATCH] ata: Disable NCQ for Crucial M225 brand SSDs

From: Vishal Rao
Date: Tue Jan 26 2010 - 20:14:20 EST


2010/1/27 Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>:
> It could even be a Linux side bug or some kind of complicated Linux
> timing thing. That *has* happened before with the older IDE stack, so we
> need to be cautious, collect reports and try to see patterns before
> jumping to conclusions - unless the vendor advises us otherwise.

Good, I'm hoping you folks have better clout in soliciting responses from
users and vendors. In the mean time that I'm going to take a couple of
days to find the time to test on a different machine, here is a month-old
output of "dmesg | grep ata1" if it helps any:

http://pastebin.ubuntu.com/347122/

I'm running Ubuntu Lucid 10.04 alphas at the moment and note that even
if I "successfully reproduce" the problem on my alternate hardware, its
still the same particular disk which can't disprove that it's simply a
single defective piece - the only thing stuck in my mind is Win7rc working
fine so far while various other Linux distros have exhibited the same problem.
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