Mark Lord wrote:

>> I copy all stuff need into tmpfs to ensure that it can restore the video
>> without hard disk access.
>
> OOhh.. clever, wish I'd thought of that,

One should not forget to disable swap first :)

> as all of my (now solved) suspend/resume issues
> were *all* libata related.

So I guess it is a good idea to get SATA working first, isn't it?

>> What to do, what to test?
>
> Randy Dunlop's libata-acpi patch might work for you.
> http://www.xenotime.net/linux/SATA/

I tried the 2.6.16-rc4 patches on 2.6.16 (one hunk did not apply in
libata.h, but I think I was able to fix it manually). Before suspend it
works well, after suspend it does not work. Seems that the timeout is
longer with the patch, though. I tried it several times; once it seemed
to have worked, but it was not reproducible (and it did not work any
longer after the next suspend), so I guess it could be just that I only
tried files already in cache. (Or alternatively, the patch has a success
rate of maybe 5%...)

"Just for fun" i tried the 2.6.15 patches on 2.6.15, but it did not even
boot.

BTW: It is an Intel AHCI controller.

Any other ideas/patches?

Michael
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