On Thu, Aug 10 2006, Jason Lunz wrote:

In gmane.linux.kernel, you wrote:

quoted

You make it sound much worse than it is. Apart for HPA, I'm not aware of
any setups that require extra treatment. And the amount of reported bugs
against it are pretty close to zero :-)

*ahem*.

I needed to do this to cure IDE hangs on resume:

ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc3/2.6.18-rc3-mm2/broken-out/ide-reprogram-disk-pio-timings-on-resume.patch

Are you watching the suspend mailing lists? There's no shortage of them:

suspend-devel:	http://dir.gmane.org/gmane.linux.kernel.suspend.devel
linux-pm:	http://dir.gmane.org/gmane.linux.power-management.general
suspend2-devel:	http://dir.gmane.org/gmane.linux.swsusp.devel
suspend2-users:	http://dir.gmane.org/gmane.linux.swsusp.general

I'm currently trying to help out one Sheer El-Showk, whose piix ide
requires 30 seconds of floundering followed by a bus reset to resume:

http://thread.gmane.org/gmane.linux.kernel.suspend.devel/276/focus=347

But I know next-to-nothing about ATA.

It's not surprising you're not getting many bug reports. It's common for
several things to go wrong during s2ram, and the user often ends up
looking at a hung system with a dead screen. It takes some quality time
with netconsole to even begin to narrow down that it's IDE hanging the
system, after which you can *begin* solving the no-video-on-resume
issue.

I'm not on any of the suspend lists, I was merely comparing the
suspend-others or suspend-libata ration to suspend-ide on linux-kernel,
and the latter is clearly in the minority. I've used ide suspend quite a
bit myself, and never had issues with it (or whichever ones I saw
initially, I fixed). Of course it depends very much on the hardware. I'd
still say that ide suspend probably supports a much wider range of
hardware, than does libata suspend.

-- 
Jens Axboe